2018—2019学年度济宁市高考模拟考试
英语试题
本试卷分第I卷和第Ⅱ卷两部分，共12页。满分150分。考试用时120分钟。考试结束后，将本试卷和答题卡一并交回。
第I卷
第一部分听力(共两节，满分30分)
做题时，先将答案标在试卷上。录音内容结束后，你将有两分钟的时间将试卷上的答案转涂到答题卡上。
第一节(共5小题；每小题1.5分，满分7.5分)
听下面5段对话。每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。
例：How much is the shirt?
A．￡19．15．
B．￡9．15．
C．￡9．18．
答案是B。
1．What are the speakers talking about?
A．Banks．B．Money．C．Cards．
2．Where is John’s father?
A．At work B．At home．C．At schoo1．
3．How many people will go to the museum together?
A．Three．B．Five．C．Six．
4．What does the boy want to have?
A．Green peaches．
B．Red peaches．
C．Red apples．
5．What is the woman most probably doing now?
A．Reading downstairs．B．Sleeping downstairs．C．Sitting upstairs．
第二节(共15小题；每小题1.5分，满分22.5分)
听下面5段对话或独白。每段对话或独白后有几个小题，从题中所给的A、B、C三个选项中选出最佳
选项，并标在试卷的相应位置。听每段对话或独白前，你将有时间阅读各个小题，每小题5秒钟；听完后，各小题给出5秒钟的作答时间。每段对话或独白读两遍。
听第6段材料，回答第6、7题。
6．Who will take the article to Professor Yang?
A．Mike．B．Helen．C．Someone else．
7．What will Mike do?
A．Print the article tomorrow．
B．Go and see Professor Yang himself．
C．Take the article to Helen’s office．
听第7段材料，回答第8至10题。
8．How long will the speakers stay on the train?
A．Four hours．B．Six hours．C．Ten hours．
9．Why hasn’t the man booked the plane tickets?
A．He wants the woman’s advice．
B．The tickets are too expensive．
C．The plane leaves too late．
10．How much will they pay for the plane tickets?
A．410 pounds．B．820 pounds．C．520 pounds．
听第8段材料，回答第11至13题。
11．What decision does the boy have to make?
A．Which university to apply for．
B．Which university to choose．
C．How much money to spend．
12．Why are there more foreign students in Washington?
A．Because it’s the capital of the US．
B．Because students pay less there．
C．Because there are fewer courses．
13．What will the boy do next?
A．Go to Washington．
B．Ask someone else for advice．
C．Visit two universities．
听第9段材料，回答第14至17题。
14．How long have the man and the woman been looking for an apartment?
A．1 month．B．3 months．C．6 months．
15．How much is the rent of the apartment for a year?
A．2，000 dollars．B．12，000 dollars．C．24，000 dollars．
16．What kind of apartment does the woman prefer?
A．A downstairs apartment．
B．An apartment with few neighbors．
C．An apartment that allows keeping pets．
17．What does the woman think of the apartment on Main Street?
A．The most appropriate．
B．Too expensive and noisy．
C．Too far away from her office．
听第10段材料，回答第18至20题。
18．How long did the speaker stay in the South Corinth School?
A．1 year．B．2 years．C．3 years.
19．Who is the coolest teacher in the Corinth High School?
A．Mr Nolan．B．Mrs Jackson．C．Mr Best．
20．What is the speaker’s attitude towards her teachers?
A．Thankful_
B．Disappointed．
C．Interested
第二部分阅读理解(共两节，满分40分)
第一节(共15小题；每小题2分，满分30分)
阅读下列短文，从每题所给的四个选项(A、B、C和D)中，选出最佳选项，并在答题卡上将该项涂黑。
A
Outdoor Science Field Trips!
21．Which trip caters for more age groups than all the others?
A．Habitat & Home B．Only Rain Down the Drain
C．healthy earth healthy bodies D．Rockin’and Recycling
22．What will you learn from Only Rain Down the Drain?
A．Information about weather．B．Knowledge about water systems．
C．Grade specific science standards．D．Stories about Sonoma County．
23．Which trip should you choose if you want to learn to forecast the weather?
A．Habitat & Home B．Only Rain Down the Drain
C．Rockin’and Recycling D．Weather or not
B
A crew of six teenage girls completed a nine-day sailing trip in the US recently，after braving seasickness and strong winds．
For the past three years，the Sea Cadet teenagers who set sail were all male．Roger Noakes，who captained the
boat，said this was the first time he’d taken out an all-female crew．
The girls asked for an a11-girls trip in August this year．The crew set sail along with three adults，Noakes and two Sea Cadet representatives．The original plan was for the girls to sail 24 hours a day in rotating shifts(轮流换班)along the coast and then return．Things turned out differently，however．“The first night was rough because the wind was really hard．The waves were going up and down，”said Abby Fairchild，16．“Everybody got seasick．”Noakes gave the girls the option of just sailing in the bay and not going into open water．“But they decided they were going．”
The teenagers then sailed a long way overnight and slept in shifts．“We’ve learned everything from steering(掌舵)the boat itself to putting up the sails to cooking while we have rough seas，”said 15-year-old Olivia Wilcox．
The teenagers stopped on land in Massachusetts．They didn’t make it to their original destination in Maine，where they were supposed to have a celebratory dinner，due to the weather and winds．They said they weren’t disappointed，however，as they’d learned a lot．“They learned about boating，and above all，they built confidence and character，”said Noakes．
24．What was special about the US Sea Cadet trip this year?
A．It was the longest sailing trip ever．
B．It was the first all-female-crew sailing trip．
C．It was the most dangerous sailing trip ever．
D．It was the first sailing trip for teenagers．
25．What happened on the crew’s first day of the trip?
A．They all got seasick．
B．They regretted taking the trip．
C．They decided to stay in the bay．
D．Some of them were injured．
26．Which of the following best describes these young sailors?
A．Determined and cooperative．B．Hard-working and talented．
C．Understanding and creative．D．Adventurous and skillful．
27．According to Noakes，what was the sailors’greatest benefit from the trip?
A．They acquired excellent sailing skills．
B．They learned to work in teams．
C．They built confidence and character．
D．They knew the sea better．
C
Hadi Partovi，founder of Code．org believes every student should learn the basics of computer science just like they do math，physics，or biology，regardless of what they want to do in the future．The expert says knowledge about the subject is important to understand how the world around us works and compares it to learning about photosynthesis(光合作用)，even though not every student is going to be a botanist．To spark students’interest，he created the“Hour of Code，”which introduces the world of computing to anyone，from ages 14 to 104，in a fun，interactive manner．Observed annually during Computer Science Week，the event now draws tens of millions of kids from over 180 countries．
The“Hour of Code”，which can be scheduled anytime during Computer Science Week，begins with an introductory video on computer science．Participants can then select from hundreds of fun assignments that are sorted by both grade level and coding experience．Though each project is designed to last just sixty minutes，beginners can deal with as many challenges as they desire．
To help introduce computer science in classrooms on a more regular basis，Code．org has also developed a catalog of online courses that can be incorporated(纳入)in a school’s regular curriculum．Since the nonprofit began offering the courses in 2013，over 704，000 teachers have signed up to teach introductory computer science to over 22 million students worldwide．
Thanks to the efforts of the pioneer，about 40 percent of US schools now offer computer science as a subject．The numbers are even higher—an impressive 70 percent—if after-school offerings such as robotics clubs are included．Even more encouraging，eight years ago，just 19，390 students took an Advanced Placement Computer Science exam．By the spring of 2017，the number had jumped 415 percent to 99，868．
28．Why did Hardi Partovi create the“Hour of Code”?
A．To train computer scientists for the future．
B．To introduce the world of computing to teachers．
C．To add a programme to Computer Science Week．
D．To help people learn computer science in a fun way．
29．The“Hour of Code”is so called most probably because___________．
A．it is observed annually
B．it can be scheduled anytime
C．its projects last sixty minutes each
D．its tasks can be sorted by coding experience
30．What do we know about Code．org’s online courses?
A．Schools can use them regularly in their classrooms．
B．They help the developer make lots of money．
C．Over 704，000 teachers have been learning them．
D．They have existed for over 10 years up to now．
31．What do the numbers show in the last paragraph?
A．The efforts of Hadi Partovi．
B．The influence of robotics clubs．
C．The effect of Hadi Partovi’s efforts．
D．The development of many US schools．
D
Wood has many great characteristics that make it the perfect building material．It is cheap，durable，easily available，and most importantly，environmentally sustainable．The one thing it is not，is transparent! Now thanks to a team of scientists at Stockholm’s KTH Royal Institute of Technology the material may even be able to add that feature to its already impressive list．
Lead researcher Dr，Lars Berglund said he was inspired to create the transparent wood after learning how
Japanese researchers had developed a see-through paper for use in flexible display screens for electronic devices．The team began by pulling out the wood’s lignin(木质素)．The lignin-free wood was then dipped into a polymer(聚合物)and baked at a temperature of 158°F for four hours．The result was a hybrid product that was not only stronger and lighter than the original wood but also，almost transparent．The researchers were able to adjust the level of transparency by varying the amount of the polymer injected and also by changing the thickness of the wood．
While scientists have previously created a see-through wood for small-scale applications like computer chips，the transparent wood is the first one being considered for large scale applications．The researchers，who revealed their findings in Biomacromolecules on April 11，picture using the transparent wood in buildings to allow for more natural light，or to create windows that let in the desired amount of light without sacrificing privacy．Wood that allows light to pass through could lead to a brighter future for homes and buildings．Berglund also thinks the wood could play a significant role in the design of solar panels．The semitransparent material would be able to keep light longer and give it more time to interact with the conductor，thus resulting in better solar efficiency．Additionally，substituting the currently used glass with this new product would help solar energy manufacturers improve their carbon footprint and lower the cost．They are now experimenting with ways to scale up the manufacturing process so that the transparent material is cost-effective to make and easy to use．32．What does the underlined part“that feature”in Paragraph 1 refer to? A．Cheap．B．Durable．C．Sustainable．D．Transparent．
33．Which of the following correctly shows the process in which the transparent wood is made?
①Dip the wood into a polymer．②Adjust the amount of the polymer．
③Make the wood lignin-free．④Bake the wood for some time．
A．③→①→④→②B．③→①→②→④
C．①→②→③→④D．④→③→②→①
34．Which of the following is true according to the text?
A．Berglund got the idea of transparent wood while making paper．
B．Varying the amount of the polymer changes the wood’s hardness．
C．The transparent wood would be used only for homes and buildings．
D．The cost of making the transparent wood still needs to be cut down．
35．What is the last paragraph mainly about?
A．The bright future of the transparent wood．
B．The wood’s role in the design of solar panels．
C．The disadvantages of the currently used glass．
D．Solar energy manufacturers’carbon footprint．
第二节(共5小题，每小题2分，满分10分)
根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
Where you choose to stay can make or break your vacation experience．But even the most experienced travelers may not know the difference between the two main types of homes-away-from-home—hotels and motels．36 The answer isn’t as simple as you’d think．
These two types of lodging(住宿)have the same basic purpose—a place for travelers to sleep．37 For instance，they came to be for different reasons，and at very different times．
The word“hotel”dates back to the 1600s and comes from a French word，h?tel．That word，just like the
English one．referred to a place that provides lodging，meals，entertainment，and other services to travelers．38 This word dates back to the 1920s and combines the words“hotel”and“motor．”As America’s major highway system developed，so did motels，filling the need for roadside stops for motorists traveling cross-country．
39 Hotels tend to be built for longer stays，while motels are intended more for one-or two-night stops along
a journey．Because of this，hotels are much more likely to have offerings like lounges，gyms，and entertainment．
40 Want the place you stay to be just as much a part of your travel experience as anything else? Choose a hotel，Just need a place to pop in and out of to shower and sleep? A motel might be the better choice．A．There are many secrets that hotels won’t tell you．
B．But there are plenty of features that set them apart．
C．Have you ever stayed in a motel on your vacation?
D．Motels，on the other hand，are a much more recent lodging option．
E．Besides their first letters，is there any real difference between them?
F．So，in the end，it comes down to what you want from your trip and from your lodging．
G．There are also other differences that can help you figure out which type of place you’re in．
第三部分英语知识运用(共两节，满分45分)
第一节完形填空(共20小题；每小题1.5分，满分30分)
阅读下面短文，从短文后各题所给的四个选项(A，B，C和D)中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
I work as the reception manager at my hotel．A(n) 41 came in a few weeks ago with a note attached that the guest would be travelling with her 42 father．Just so that we would be aware when 43 with them when they arrived as his daughter wanted to make his trip to Ireland as 44 as possible．Upon seeing this note and noting I would be the one to 45 them in，I decided to learn some basic 46 language．
I greeted the guest in my usual way，47 for the surname on the booking．Once I heard the name I 48 immediately who was standing in front of me．
I had been learning for over two 49 how to say”welcome to Ireland．My sign language is 50 ，but if you need anything during your 51 just let me know and we will help you”．
I smiled at the father and daughter in front of me，turning to the father who I greeted in sign language and began the bit I had 52 for him．The father smiled and was so 53 ．Seeing his reaction was 54 for me．It was so worth the last few weeks of learning basic sign language．
On check-out I sadly wasn’t 55 ．but they had left a gift for me with a note saying”thank you very much for what you did on check-in．My father has been in 56 form since you checked us in and insisted we get you a 57 before we left．You have no idea how much this 58 to my father and me and we can’t thank you enough．You’ve made his trip very special with one simple 59 ”．
They wrote a letter to the general manager also asking to give me a raise．which I really 60 ．I cried for a solid 5 minutes when I came to work today to find this gift in my locker．
41．A．guest B．invitation C．booking D．warning
42．A．deaf B．blind C．forgetful D．stubborn
43．A．discussing B．dealing C．cooperating D．bargaining
44．A．soon B．1ong C．formal D．smooth
45．A．guide B．invite C．check D．drive
46．A．body B．sign C．official D．foreign
47．A．asking B．paying C．charging D．applying
48．A．greeted B．decided C．forgot D．realized
49．A．hours B．days C．weeks D．months
50．A．fluent B．terrible C．standard D．helpful
51．A．stay B．travel C．study D．dinner
52．A．1earned B．1eft C．booked D．bought
53．A．kind B．tired C．polite D．happy
54．A．fair B．enough C．natural D．regular
55．A．sleeping B．noticing C．working D．waiting
56．A．healthy B．normal C．amazing D．hopeful
57．A．job B．gift C．surprise D．chance
58．A．meant B．devoted C．attached D．owed
59．A．word B．note C．comment D．gesture
60．A．deserved B．doubted C．appreciated D．suggested
第Ⅱ卷
注意事项：
用0.5毫米黑色签字笔将答案写在答题卡上。写在本试卷上无效。
第三部分英语知识运用(共两节，满分45分)
第二节(共10小题，每小题1.5分，满分15分)
阅读下面材料，在空白处填入1个适当单词或括号内单词的正确形式。
The Moon’s near side，the one we all see，has been the target of many robotic and human missions．However，its far side，also 61 (call)the dark side because it faces away from the Earth and little 62 (know)about it，has never been explored．That changed on Jan．2，2019，when Chinese spacecraft Chang’e 4 made a soft landing on 63 is often referred to as the dark side．
The landing is 64 example of China’s growing desire 65 (compete)with the American，Russian and European space programs．China also wants to 66 (strength)its position as a regional and international power．One of the great 67 (difficulty)in exploring the far side of the Moon is that it blocks all radio signals，68 (make)it impossible to communicate with the Earth．To overcome this difficulty，in 2017，the Chinese National Space Administration launched a satellite to orbit the Moon and relay the signals．Once a 69 (rely)communication path was in place，Chang’e 4 could send back information．
Chang’e 4 will make astronomical observations and examine the structure and mineral composition of the ground above and below the surface，70 researchers believe will provide insights into the solar system’s early
days and perhaps even the origin of the first stars．
第四部分写作(共两节，满分35分)
第一节短文改错(共10小题；每小题1分，满分10分)
假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号(∧)，并在其下面写出该加的词。
删除：把多余的词用斜线(＼)划掉。
修改：在错的词下画一横线，并在该词下面写出修改后的词。
注意：1．每处错误及其修改均仅限一词；
2．只允许修改10处，多者(从第11处起)不计分。
Dear Li Hua，
In your last email，you mentioned you felt frustrating at your small vocabulary．Now，I’d like to share you my ideas．
In fact，it’s not such hard to build a large vocabulary—you have to keep at it daily，but pretty soon you will find you have an excellent vocabulary．One of the effective ways are to read good books and you’d better to read at least one good book a week．It’s far good than any other method because you can improve your vocabulary while read an interesting piece of literature．Another nice thing is that you can learn new words and its usages unconsciously，which will help enlarge your vocabulary natural．
Yours，
Peter 第二节书面表达(满分25分)
假定你是李华，你打算参加你校下周要举行的主题为“We Are All Dream Chasers”英语演讲大赛，
你已经写完初稿，请根据以下提示用英语给你的外教Miss Lucy写一封邮件。
1、参加大赛目的；
2、请她帮忙纠正发音、润色语言等；
3、约定拜访时间、地点。
注意：
1、词数100左右；
2、可以适当增加细节，以使行文连贯。
2018～2019学年度第一学期高三12月份调研卷 英语 考试时间120分钟，满分150分。仅在答题卷上作答。 第一部分听力（共20题，每小题1.5分，共30分） 第一节（共5小题；每小题1.5分，满分7.5分） 听下面5段对话。每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的指定位置处。听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。 1. When will the meeting begin? A. At 10:30. B. At 10:50. C. At 10:45. 2. What does the woman mean? A. The homework can’t be due in two days. B. She hasn’t finished her homework yet. C. She doesn’t expect it to come so soon. 3. Where does the conversation probably take place? A. On the street. B. At a hotel. C. At a shop. 4. What does the woman suggest? A. Cooking at home. B. Eating out at McDonald’s. C. Taking McDonald’s home. 5. What is the woman’s attitude? A. She agrees with the man. B. She doesn’t ag ree with the man. C. She doesn’t know what to do. 第二节(共15小题，每小题l．5分，满分22．5分) 听下面5段对话或独白。每段对话或独白后有几个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在答题卷的相应位置。听每段对话或独白前，你将有时间阅读各个小题，每小题5秒钟；听完后．各小题将给出5秒钟的作答时问。每段对话或独白读两遍。听第6段材料，回答第6至8题。
高三第一次合模拟考试 理科数学答案 ABDACB BBACDC （注：11题4,e >∴D 选项也不对，此题无答案。建议：任意选项均 可给分） 13. 2; 14. 1 4 ; 15.8; 16.[]1,3 17.解：（Ⅰ）证明： 1131 33()222 +- =-=-n n n a a a …….3分 12 1 11=- =a b 31=∴+n n b b ，所以数列{}n b 是以1为首项，以3为公比的等比数列；….6分 （Ⅱ）解：由（1）知， 1 3-=n n b ，由 11 1n n b m b ++≤-得13131 n n m -+≤-，即() 14 3331n m +≤-，…9分 设() 14 3331= + -n n c ，所以数列{}n c 为减数列，()1max 1==n c c ， 1∴≥m …….12分 18解：（Ⅰ）平均数为 ………….4分 （Ⅱ）X 的所有取值为0,1,2,3,4． ……….5分 由题意，购买一个灯管，且这个灯管是优等品的概率为0.200.050.25+=，且 1~4,4X B ?? ??? 所以0 4 4181 (0)C (1)4 256 P X ==?-= ， 134 1110827 (1)C (1)4425664P X ==??-==， 2224 115427 (2)C ()(1)44256128P X ==?-==， 3314 11123 (3)C ()(1)4425664P X ==?-==， 4404111 (4)C ()(1)44256 P X ==?-= ． 以随机变量X 的分布列为：
P 81256 2764 27128 364 1 256 ……………………….10分 所以X 的数学期望1 ()414 E X =? =．…….12分 19.（Ⅰ）证明：四边形ABCD 是菱形， BD AC ∴⊥. ⊥AE 平面ABCD ,BD ?平面ABCD BD AE ∴⊥. ?=AC AE A , BD ∴⊥平面ACFE .………….4分 （Ⅱ）解：如图以O 为原点，,OA OB 为,x y 轴正向，z 轴过O 且平行于CF ，建立空间直角坐标系.则 (0,3,0),(0,3,0),(1,0,2),(1,0,)(0)B D E F a a -->，(1,0,)=-OF a .…………6分 设平面EDB 的法向量为(,,)=n x y z ， 则有 00 ??=???=??n OB n OE ，即 30 20 y x z ?=??+=??令1z =， (2,0,1) =-n .…………8分 由题意o 2||2 sin 45|cos ,|2 |||| 15 ?=<>== = +OF n OF n OF n a 解得3a =或13-. 由0>a ，得3=a .…….12分 20. 解： （Ⅰ）由题意得22222, 3, 122 1.a b c c a a b ? ? ?=+? ?=??? ?+=??解得 2.1,3.a b c ?=?=?? =?所以C 的方程为2214x y +=. …….4分 （Ⅱ）存在0x .当04x =时符合题意. 当直线l 斜率不存在时，0x 可以为任意值. 设直线l 的方程为(1)y k x =-,点A ,B 满足：22 (1),1.4 y k x x y =-?? ?+=??
广东省普通高考第三次模拟考试试题 理科数学 第Ⅰ卷（共60分） 一、选择题：本大题共12个小题,每小题5分,共60分.在每小题给出的四个选项中，只有一项是符合题目要求的. 1.已知集合{}|3A x N x =∈<，{}|,,B x x a b a A b A ==-∈∈，则A B =I （ ） A ．{}1,2 B ．{}2,1,1,2-- C ．{}1 D ．{}0,1,2 2.已知z 是z 的共轭复数，且||34z z i -=+，则z 的虚部是（ ） A ． 7 6 B ．76 - C ．4 D ．4- 3.等差数列{}n a 的前n 项和为n S ，7524S S -=，35a =，则7S =（ ） A ．25 B ．49 C ．15 D ．40 4.一名法官在审理一起珍宝盗窃案时，四名嫌疑人甲、乙、丙、丁的供词如下，甲说：“罪犯在乙、丙、丁三人之中”；乙说：“我没有作案，是丙偷的”；丙说：“甲、乙两人中有一人是小偷”；丁说：“乙说的是事实”.经过调查核实，四人中有两人说的是真话，另外两人说的是假话，且这四人中只有一人是罪犯，由此可判断罪犯是（ ） A ．甲 B ．乙 C ．丙 D ．丁 5.某厂家为了解销售轿车台数与广告宣传费之间的关系，得到如表统计数据表：根据数
据表可得回归直线方程$$y bx a =+$，其中 2.4 b =$，$a y bx = -$，据此模型预测广告费用为9万元时，销售轿车台数为（ ） 广告费用x （万元） 2 3 4 5 6 销售轿车y （台数） 3 4 6 10 12 A ．17 6.将编号为1,2,3,4,5,6的六个小球放入编号为1,2,3,4,5,6的六个盒子，每个盒子放一个小球，若有且只有三个盒子的编号与放入的小球编号相同，则不同的放法总数是（ ） A ．40 B ．60 C ．80 D ．100 7.已知函数20172017log 3sin ,0, ()log ()sin ,0, m x x x f x x n x x +>?=? -+
武胜中学2013届补习班第二期第一次月考 化学试题 可能用到的相对原子质量：H:1 C:12 O:16 Si:28 F:19 S:32 K:39 Cu:64 第I 卷(选择题) 一、选择题：本题共7小题，每小题6分，在每小题给出的四个选项中，只有 一项是符合题目要求的。 1．化学与科学、技术、社会、环境密切相关。下列有关说法中不正确的是：( ) A ．厨房中燃气泄漏，立即打开抽油烟机排气 B ．减少燃煤的使用，改用风能、太阳能等能源，符合“低碳生活”理念 C ．在食品袋中放入盛有硅胶和铁粉的透气小袋，可防止食物受潮、氧化变质 D ．“血液透析”利用了胶体的性质 2．N A 代表阿伏加德罗常数，下列说法正确的是：( ) A ．分子数为N A 的CO 、C 2H 4混合气体体积约为22.4 L ，质量为28 g B ．已知2CO(g)+O 2(g) 2CO 2(g)；△H=-akJ ﹒mol -1 将2N A 个CO 与N A 个O 2混合充分反应放出akJ 的热量。 C ．用石灰乳完全吸收l mol Cl 2时，转移电子的数目是N A D ．常温下，0.1mol/LNa 2CO 3溶液中，含有阴离子的总数大于0.1N A 3．下列叙述或离子方程式书写正确的是 ( ) A. 将少量二氧化硫通入次氯酸钠溶液中：SO 2+H 2O+ClO -＝SO 42-+Cl -+2H + B. 向含有F e 2O 3悬浊液中通入HI 气体： F e 2O 3 + 6H ＋ = 2Fe 3＋ + 3H 2O C ．用惰性电极电解MgCl 2溶液：2Cl - + 2H 2O Cl 2↑+ H 2↑+ 2OH - D ．等物质的量的Ba(OH)2与(NH 4)2Fe(SO 4)2在溶液中反应： Ba 2＋＋2OH －＋2NH 4＋+SO 42－= BaSO 4↓＋2NH 3·H 2O 4．下列有关化学用语使用正确的是 ( ) A.HClO 的电子式： B.具有16个质子、 16个中子和18个电子的微粒是3216 S C.邻羟基苯甲酸的结构简式： D.乙烯的比例模型： 5．下列叙述错误的是 ( ) A ．把a L 0.1 mol/L 的CH 3COOH 溶液与b L 0.1 mol/L 的 KOH 溶液混合，所得溶液中一定 存在：c (K +)+ c (H +) = c (CH 3COO －) + c (OH － ) B ．氯水中：c(Cl －)＞c(H +)＞c(OH －)＞c(ClO －) C ．把0.1 mol/L 的NaHCO 3溶液与0.3 mol/L 的Ba(OH)2溶液等体积混合，所得溶液中一定存在：c (OH －) >c (Ba 2+)>c (Na +)> c (H ＋) D ．常温下，在pH=3的CH 3COOH 溶液和pH=11的NaOH 溶液中，水的电离程度相同 6．向一定量的NaOH 溶液中逐滴加入AlCl 3溶液，生成沉淀Al(OH)3的量随AlCl 3加入量的变化关系如图所示。则下列离子组在对应的溶液中一定能大量共存的是( ) A ．a 点对应的溶液中：Na ＋、Fe 3＋、SO 42-、HCO 3- B ．b 点对应的溶液中：Na ＋、S 2－、SO 42-、Cl －
浙江省临海市2019届高三英语模拟测试 第二部分阅读理解（共两节，满分35分） 第一节（共10小题；每小题2.5分，满分25分） 阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。 A Basketball Statistician Help Wanted The Athletic Department is looking for students to help assist staff during the Fall 2016, Winter 2016-17 and Spring 2017 semesters. Students in this position will be keeping live statistics during basketball games. Students must meet all of the following requirements: ●Good computer skills ●Available evenings and weekends ●Knowing basketball rules and statistics Students interested in working for the Athletic Department should contact the Athletic Coordinator at their respective(各自的) campuses. ●TP/SS Athletic Coordinator, Michael Simone,240-567-1308 ●Rockville Athletic Coordinator, Jorge Zuniga,240-567-7589 ●Springfield Athletic coordinator, Gary Miller,240-567-2273 ●Germantown Athletic Coordinator, GavriChavan, 240-567-6915 1.When will the job start? A . In May 2016. B. In May 2017. C. In September 2016. D. In September 2017. 2.Who is more likely to get job? A. Sam,English major ,member of the college basketball team. B. Judy,IT staff with night classes,children’s basketball team coach. C. Ted,computer major, basketball fan,free on evenings and weekends. D. Molly,part_time programmer,high school basketball player ,new mother. 3.Whom should you contact if you want to apply for the job in Rockville? A. Michael B. Jorge C. Gauri D. Gary B
高三第一次模拟考试 一、基础知识（共15分，共5小题，每小题3分） 1．下列各组词语中加点的字，读音全都相同 ．．．．的一组是（） A．耕．读羹．匙万象更．新亘．古不变 B．标识．什．物箪食．壶浆拾．人牙慧 D．堂倌．冠．名羽扇纶．巾冠．状动脉 2．下列各组词语中，没有 ．．错别字的一组是（） A．幽远猗郁游目骋怀不落言筌 B．爆仓碰瓷历行节约平心而论 C．陨首颓圮束之高阁再所不辞 D．松驰瞭望无精打采感恩戴德 3．依次填入下列横线处的词语，最恰当 ．．．的是（） 中国梦不是，但圆梦之途绝不轻松，既需要尽力而为、量力而行、，更需要克勤克俭、辛勤劳动，在推动经济发展中，持续满足民生之需、持续增进民生。梦想成真，民生改善是最好。 A．空中楼阁步步为营福利注解 B．虚无缥缈循序渐进福祉诠释 C．虚无缥缈步步为营福利注解 D．空中楼阁循序渐进福祉诠释 4．下列各项中，没有 ．．语病的是（） A．知名作家任职大学教授之所以引起热议，是因为中国当代作家和大学之间的关系长期脱离造成的。当代作家和大学之间本应该具备正常关系，很多大学和作家也试图重建这种关系。 B．按照国际外交惯例，国家元首出访，第一夫人往往会陪同前往。她们在外交活动中的良好表现，会增强公共外交的效能，有利于提升一国的“软实力”。 C．因为苹果公司在被曝中国市场售后服务“双重标准”后的态度，引发了广泛的质疑和失望。即使苹果在其官网发出声明，否认保修存有“中外有别”，但仍未给出清晰的解释。 D．在今日视听产品和网络发达的情况下，我们需要抢救我们的文学感受力，需要从文学的阅读中汲取和培养思想的水平、精神的能量。 5．下列相关文学常识的表述，有错误 ．．．的一项是（） A．《大卫·科波菲尔》是英国著名小说家狄更斯的代表作。这部具有强烈自传色彩的小说，通过主人公大卫一生的悲欢离合，多层次地揭示了当时社会的真实面貌，同时也反映作者的道德理想。 B．巴尔扎克的长篇小说《高老头》以高老头被女儿榨干钱财后悲惨死去为中心情节，以拉斯蒂涅的活动穿针引线，将上层社会与下层社会联系起来，揭露了当时社会人与人之间赤裸裸的金钱关系。 C．在文学作品中，会反复出现一些题材，如“爱情”“战争”“复仇”等，它们被称为作品的主题，也被称为母题。换句话说，作品的主题也就是母题。 D．林冲是小说《水浒传》中的重要人物之一，他从一个安分守己的八十万禁军教头变成了“强盗”，从温暖的小康之家走上梁山聚义厅。在他的身上，集中体现了“官逼民反”的主题。 二、现代文（论述类文本）阅读（共9分，共3小题，每小题3分） 阅读下面的文章，完成6-8题。 我国古典戏曲理论的悲剧观 苏国荣
绝密★启用前 2019-2020年高三第三次模拟考试英语含答案 注意事项： 1. 答题前，考生在答题卡上务必用直径0.5毫米黑色墨水签字笔将自己的姓名、准考证号填写清楚，并贴好条形码。请认真核准条形码上的准考证号、姓名和科目。 2. 每小题选出答案后，用2B铅笔把答题卡上对应题目的答案标号涂黑，如需改动，用橡皮擦干净后，再选涂其他答案标号，在试题卷上作答无效。 第一部分：听力（共两节，满分20分） 做题时，先将答案标在试卷上。录音内容结束后，你将有两分钟的时间将试卷上的答案转涂到答题卡上。 第一节(共5小题；每小题1分，满分5分) 听下面5段对话。每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。 例：How much is the shirt? A. ￡19.15. B. ￡9.18. C. ￡9.15. 答案是C。 1. What time is it now? A. 7:00. B. 7:15. C. 7:45. 2. What does the woman mean? A. She agrees with the man. B. She doesn’t agree with the man. C. She is not sure about it. 3. What did the woman do last night? A. She stayed at home. B. She had a date with the man. C. She saw a film. 4. Where does the girl think her father is now? A. At home. B. At the club. C. At his office. 5. What is Susan Gray? A. A writer. B. A student. C. A reporter. 第二节(共15小题；每小题1分，满分15分) 听下面5段对话或独白。每段对话或独白后有几个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。听每段对话或独白前，你将有时间阅读各个小题，每小题5秒钟；听完后，各小题将给出5秒钟的作答时间。每段对话或独白读两遍。 听第6段材料，回答第6至7题。 6. What does the man want to find? A. A cheap hotel. B. A cheap house. C. Some travelers’ cheques. 7. When do the banks close? A. At 2:00 pm. B. At 7:00 pm. C. At 7:30 pm. 听第7段材料，回答第8至10题。 8. How many days did they stay there? A. Seven days. B. Twenty-two days. C. Six days. 9. Who caught the most fish? A. Ben. B. Kathy. C. Ben’s father. 10. Why doesn’t Ben want fish for dinner? A. Because h e doesn’t like fish.
浙江省慈溪中学2013届高三第一次月考考试 英语试卷 第二部分：英语知识运用（共两节，满分30分） 第一节：单项填空（共20小题；每小题0.5分，满分10分） 从A、B、C、D四个选项中，选出可以填入空白处的最佳答案，并在答题卡上将该项标号涂黑。 1.Tuesday being _________ windy, cold day in Beijing, the President tours _______ Forbidden City in Beijing, wearing ________ blue shirt with no tie and a casual leather jacket. A. a; the; the B. a; /; a C. /; /; a D. a; the; a 2. Nick is looking for another job because he feels that nothing he does ______ his boss. A. serves B. satisfies C. promises D. supports 3. He is afraid to face the difficulty he thinks he?ll have _________ the driving test tomorrow; he finds it difficult _________ rid of the worries. A. passed; got B. passing; to get C. to pass; getting D. in passing; in getting 4. For some time, Chinese people, under the leadership of CPC, ________ the contents of the Scientific Development Concept in the course of practicing socialism in China. A. had been improving B. have been improving C. were improving D. improved 5. All the people present agreed that the matter required ___________. A. to look into B. being looked into C. to be looked D. looking into 6. Victor apologized for _________ to inform me of the change in the plane. A. his being not able B. him not to be able C. his not being able D. him to be not able 7. Five years later, he returned home, his character greatly _________. A. changed B. changing C. having changed D. was changed 8. He is often listened __________ English songs, but this time we had him _________ a Russian song. A. to to sing; sing B. to sing; to sing C. sing; to sing D. sing; sing 9. It?s said that in the sea the fisherman caught a big fish ________. A. alive B. lively C. live D. living 10. This restaurant wasn?t _________ that other restaurant we went to. A. half as good as B. as half good as C. as good as half D. good as half as 11. When you are done with the book, just give it to Lucy or Helen or ________. A. wherever B. whoever C. whatever D. however 12. All the settlers nearby demanded that the nightclub _______ away as soon as possible because of the loud noise at night.
高三第一次模拟考试试卷 一、选择题。本题共10小题，每小题4分，共40分。在每小题给出的4个选项中，有的小题只有一项是正确的，有的小题有多个选项是正确的。全部选对的得4分，选对但不全的得2分，有选错或不符的得0分。 1、处于基态的氢原子，能够从相互碰撞中或从入射光子中吸收一定的能量，由基态跃迁到激发态，已知氢原子从基态跃迁到n=2的激发态需要吸收的能量为10.2eV ，如果静止的氢原子受其他运动的氢原子的碰撞跃迁到该激发态，则运动的氢原子具有的动能 A 、一定等于10.2eV B 、一定大于10.2eV ，且大得足够多 C 、只要大于10.2eV ，就可以 D 、一定等于10.2eV 的整数倍 2、下列说法正确的是 A 、雨后路面的油膜出现彩色条纹，这是光的色散现象 B 、太阳光斜射在铁栅栏上，地面出现明暗相间的条纹，这是光的干涉现象 C 、对着日光灯从两铅笔的狭缝中看到的彩色条纹，这是光的衍射现象 D 、从月亮光谱可以分析月亮的化学成份 3、2003年10月15日，我国成功发射并回收了“神州五号”载人飞船。设飞船做匀速圆周运动，若飞船经历时间t 绕地球运行n 圈，则飞船离地面的高度为：（设地球半径为R ，地面重力加速度为g ） A 、322224n t gR π B 、322224n t gR π-R C 、3222n t gR D 、32 22n t gR -R 4、图是健身用的“跑步机”示意图，质量为m 的运动员 踩在与水平成α角的静止皮带上，运动员双手把好扶手并 用力向后蹬皮带，皮带运动过程中，受到的阻力恒为f ， 使皮带以速度v 匀速运动，则在运动过程中，下列说法中 正确的是 A 、人对皮带的摩擦力一定是滑动摩擦力 B 、人对皮带不做功 C 、人对皮带做功的功率一定为mgv sin α D 、人对皮带做功的功率为fv 5、超导是当今高科技热点，利用超导材料可以实现无损耗输电，现有一直流电路，输电线的总电阻为0.4Ω,它提供给用电器的功率为40kW ，电压为800V ，若用超导电缆替代原来的输电线，保持供给用电器的功率和电压不变，那么节约的电功率为 A 、1 kW B 、1.6×103kW C 、1.6 kW D 、10 kW 6、完全相同的两辆汽车，以相同的速度在平直公路上匀速齐头并进，当它们各自推下质量相同的物体后，甲车保持原来的牵引力继续前进，而乙车保持原来的功率继
濮阳市2018届高三毕业班第三次模拟考试 语文 注意事项： 1．答题前，考生务必将自己的姓名和考生号填写在试卷和答题卡上，并将考生号条形码粘贴在答题卡上的指定位置。 2．回答选择题时，选出每小题答案后，用铅笔把答题卡对应题目的答案标号涂黑。如需改动，用橡皮擦干净后，再选涂其他答案标号。回答非选择题时，用黑色笔将答案写在答题卡上。写在本试卷上无效。 一、现代文阅读（35分） （一）论述类文本阅读（每小题3分，9分） 阅读下面的文字，完成1-3题。 乡村文化是乡村社会得以延续的核心。如果没有乡村文化，那么乡村也就成为一潭死水，无从振兴了。如果乡村的振兴只是在乡村建设几间民宿，开上几个咖啡馆，让一些城里人到乡村来换换空气，尽管可以增加就业、提高收入，但是却不是真正的乡村振兴。从这个意义上说，乡村振兴的核心是乡村文化的振兴。。 文化赋予了生活的意义。乡土社会是由人组成的，同时又超越了个体，是文化将这些个体连接成为一个有机的整体，并赋予乡村生活的价值。比如乡土社会中有许多节日，每个节日都有着不同的意义。在人们庆祝这些节日的过程中，人与自然、人与人、生者与亡者保持了沟通，成为联系密切的共同体。文化也赋予乡村社会以秩序。在乡村社会中，文化发挥了更重要的作用，比如要养成尊老爱幼的风气就需要有尊老爱幼的文化氛围。在传统的乡村社会中，社会变化相对比较缓慢，老年人积累了丰富的知识可以教导青年人，因此老年人在社会中具有较高的地位。但是到了现代社会，社会发展的速度越来越快，人们有很多渠道获取知识，受过现代教育的年轻人更容易利用这些渠道获取知识，要维持年轻人对老年人的尊重，就需要文化力量。乡村文化为实现乡村振兴提供了基础。西方国家在迅速的工业化和城市化过程中，农业的快速发展是以乡村社会的消亡为代价的。与西方国家不同，东方社会都希望在快速的城市化过程中保留乡村，如日本、韩国和中国的台湾地区，在高速工业化和城市化过程中，都曾经以不同名义推动乡村的振兴，希望避免西方乡村消亡的道路。东方社会振兴乡村的重要内容之一就是保护乡村文化。 中国乡村振兴的目标之一是实现乡风文明，通过文化建设，实现乡村的和谐和有序发展，因此乡村振兴需要文化先行。文化先行可以从物质层面做起。但是，物质层面乡村文化建设只是手段，不是目的，乡村文化建设不能停留在物质文化建设上。有一些地方的乡村文化只是停留在物质建设上，精神文化建设没有跟上，物质文化也就很快消失了。在物质文化建设的基础上要推动乡村公共事务的治理。公共事务就是大家参与来管大家的事情，乡村振兴需
六安一中2013届高三年级第一次月考 语文试卷 时间：150分钟分值：150分 第I卷阅读题（共66分） 一、论述类文本阅读（9分） 阅读下面的文字，完成1~3题。 舜文化 ①《尚书》云：?德自舜明。?《史记》载：?天下明德皆自虞帝(虞舜)始。?舜帝是?德?的化身，简言之，舜文化就是舜帝身体力行所创造的道德文化，它是一种原生性的道德本体文化。因此，舜帝是中国道德文化的鼻祖。 ②舜所处的时代，是中国社会发展的转折时期。在这个时期，东夷集团与华夏集团的融合已经完成，亦即炎、黄民族的融合已经完成，在部落联盟的体制沿袭了数千年后，国家已经初步形成；作为个体的人，也已经进入了由部落联盟——诸侯国组合起来的?古国?大社会。因此，在社会生产之中，需要有一种不同于以往的关系和双方都能接受和遵守的准则，才能维护诸侯国之间和人与人之间的团结与和谐。作为诸侯国联盟首领的舜，正是适应了这一社会发展的需要，身体力行地创造、想方设法地推行了这些准则，并使整个社会都遵守这个?道德?规范，成为人类由文明产生阶段进入文明发展阶段的重要标志。 ③文化的发展具有历史的继承性。我们说孔子是儒文化的创始人，然而，孔子的功绩在于集文化之大成；儒家文化实际上只是孔子对舜文化的继承和弘扬；纵使是儒文化的核心内容之?仁?，也只是孔子在总结商周文化基础之上的画龙点睛。儒学三重道德——人伦道德、社会道德、宇宙道德的源头来自于舜帝的道德文化。楚简中的《唐虞之道》写道：?爱亲忘贤，仁而未义也；尊贤遗亲，义而未仁也……爱亲尊贤，虞舜其人也。?由此可以证实，儒家三重道德的基本构架就是发轫于舜帝所创建的道德文化。 ④各民族的文化都以本民族的特有形式发展起来，形成本民族的传统。舜文化产生在炎、黄民族融合之后，所以，它代表的是炎黄子孙的共同利益，这也是舜文化得以继承和不断弘扬的原因。舜帝虽然居?三皇五帝?之末，但是，舜帝开创了?德治?文明的崭新时代，具有里程碑的作用和历史意义。 ⑤以农耕文化为内涵的炎帝文化，以政体文化为内涵的黄帝文化，以道德文化为内涵的舜帝文化，这是中华文化的三块里程碑。农耕文化、政体文化、道德文化是中华远古文化的源头。又特别以舜文化为博大精深，它涵盖了社会、自然两大学科，其内容包括了政治、经济、军事、教育、文艺、民族关系等各个领域。舜文化是以儒家文化为核心的中华民族传统道德文化的源头。唐代著名思想家韩愈在他的《原道》一文中梳理儒家的传授关系时说，是?舜以是传之禹，禹以是传之汤。汤以是传之文武周公，文武周公以是传之孔子，孔子传之孟轲?。孔孟传之于后人。 ⑥中华传统文化之根脉是舜文化。舜文化是儒家道德价值之根脉。从这个意义上说，没有
2019高三英语阅读训练（A—B ） P1 A【2018届广东省广州市高三12月调研测试英语试题】 The Metropolis Book Club Membership All you need to do is fill out the order form at the bottom of the page, select your first order from our book list and then post the completed form back to us. Special offers for new members As a special offer, you may choose any reduced-price books from our new members’ book list, to the value of 100 yuan in total. Tick the box on your form to order a free watch. Join before the end of this month and you receive another free book carefully chosen by our staff. Order an audio-book from the many on offer, at half the recommended retail price. When you’ve joined As a member you get around 50% off the publisher’s price of every book you buy, and what’s more, they come straight to your door. Your free club magazine arrives once a month to keep you up to date with the latest best-sellers we’ve added to our list. On the Internet, you can find all our titles for the year at our exclusive members’ website. Our website also has a book swap service where members can request or offer books for exchange. Being a member All you have to do is order four books during your first year. After that, you can decide on the number of books you wish to take. In each of your monthly club magazines, our experienced staff choose a “Book of the Month” for you, which is offered at an extra-special price. If you do not want this book, just say so in the space provided on the form and send it back to us. We always send the book if we do not receive this form. Once we receive your order, your books are delivered within one week. And remember, you have up to a fortnight to decide if you wish to keep the books you have ordered. If they aren’t what you expected just send them back! 1. How can you become a member of the Metropolis Book Club? A. By ordering a watch free of charge.
惠州市2018届高三第一次模拟考试 英语 2018.4． 注意事项：1. 本试卷分第Ⅰ卷（选择题）和第Ⅱ卷（非选择题）两部分。答卷前，考生必将自己的姓名、考生号、考场号和座位号填写在答题卡上。因考试不考 听力，第I卷从第二部分的“阅读理解”开始，试题序号从“21”开始。 2．回答第I卷时，选出每小题答案后，用铅笔把答题卡上对应题目的答题标号涂黑。如需改动，用橡皮擦干净后，再选涂其它答案标号。写在本试卷 上无效。 3. 回答第II卷时，将答案写在答题卡上。写在本试卷上无效。 4. 考试结束后，将本试卷和答题卡一并交回。 第I卷 第二部分阅读理解（共两节，满分40分） 第一节（共15小题；每小题2分，满分30分） 阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。 A From American Express, wedding guests will，on average，spend $673 on each wedding they attend this year. It includes airfare ($225), hotel ($170), dining out ($116) and dressing up ($95) and the gift. If you have weddings to attend this year, here are some tips for you to avoid breaking the bank. 1. Book flights in advance The moment you decide to attend a wedding is the time to check flight prices at the best time. Plane fares are higher in the summer, especially in July and August. Booking in advance will save you money, as will watch for sales on lower-cost carriers like JetBlue and Frontier. You can check Google Flights for a calendar of prices showing the cheapest days to fly from apps like Hopper to get real-time alerts when a fare is at its lowest price point. 2. Don't blow your budget on the gift If you've got the money, an expensive gift is lovely. But there's no need to take out loans to prove your love for the happy couple. Skip an expensive necklace by giving (an appropriate amount of) cash instead. To save on the gift, consider making one: A photo album or scrapbook of memories with the bride and groom shows how much you care. You could also share the gift with other guest(s) or even make gifts with DIY ideas by yourself to save money. 3. Use old dresses and suits You don't always have to be on a new dress for a wedding. While men have the option of repeating their suits, women are more likely to spend money on new clothes for the special occasion. But before you take out your wallet, consider reinventing something already in your
2019-2020年高三第三次模拟考试（三模）数学 含答案 注意事项： 1．本试卷共4页，包括填空题（第1题~第14题）、解答题（第15题~第20题）两部分．本试卷满分为160分，考试时间为120分钟． 2．答题前，请务必将自己的姓名、学校、班级、学号写在答题纸的密封线内．试题的答案写在答题纸．．．上对应题目的答案空格内．考试结束后，交回答题纸． 参考公式 样本数据x 1，x 2，…，x n 的方差s 2 ＝1n i ＝1∑n (x i －－x )2，其中－x ＝1n i ＝1 ∑n x i ． 一、填空题（本大题共14小题，每小题5分，计70分. 不需写出解答过程，请把答案写在答 题纸的指定位置上） 1．已知全集U ＝{－1，2，3，a }，集合M ＝{－1，3}．若?U M ＝{2，5}，则实数a 的值为▲________． 2．设复数z 满足z (1＋i)＝2＋4i ，其中i 为虚数单位，则复数的共轭复数为 ▲ ． 3．甲、乙两位选手参加射击选拔赛，其中连续5轮比赛的成绩（单位：环）如下表： 则甲、乙两位选手中成绩最稳定的选手的方差是▲________． 4．从2个白球，2个红球，1个黄球这5个球中随机取出两个球，则取出的两球中恰有一 个红球的概率是▲________． 5．执行如图所示的伪代码，输出的结果是 ▲ ． 6．已知α，β是两个不同的平面，l ，m 是两条不同直线，l ⊥α，m ?β． 给出下列命题： ①α∥β?l ⊥m ； ②α⊥β?l ∥m ； ③m ∥α?l ⊥β； ④ l ⊥β?m ∥α． 其中正确的命题是▲________． (填．写．所有正确命题的．．．．．．．序号．．)． 7．设数列{a n }的前n 项和为S n ，满足S n ＝2a n －2，则a 8 a 6 ＝ ▲ ． 8．设F 是双曲线的一个焦点，点P 在双曲线上，且线段PF 的中点恰为双曲线虚轴的一 （第5题图）