广东省珠海市2018年9月高三摸底考试英试题
注意事项：
考试时间：120 分钟卷面满分：120 分
1. 答卷前，考生务必用黑色字迹的钢笔或签字笔将自己的姓名和考生号、试室号、座位号填写在答题卡上。
2. 选择题每小题选出答案后，用2B 铅笔把答题卡上对应题目选项的答案信息点涂黑，如需改动，用橡皮擦干净后，再选涂其他答案，答案不能答在试卷上。
3. 非选择题必须用黑色字迹钢笔或签字笔作答，答案必须写在答题卡各题目指定区域内相应位置上；如需改动，先划掉原来的答案，然后再填写新的答案；不准使用铅笔和涂改液。不按以上要求作答的答案无效。
4. 考生必须保持答题卡的整洁。考试结束后，将答题卡交回。
第一部分阅读理解(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A、B、C 和D 四个选项中，选出最佳选项。
A
Our Annual Cultural Events
We are proud to bring the energy and enthusiasm of Brazilian Carnival to Charlotte with A Night in Rio! Get a taste of Carnival through dancing, live music, authentic food, drinks and marketplace. Put on your green and yellow, and join us for the unforgettable experience of Brazilian Carnival!
Date: Saturday, February 24, 2018
TICKETS AVAILABLE ONLY AT THE DOOR Location: Neighborhood Theatre, Charlotte
Time: 7 PM
Ritmo & Sabor
We are thrilled to bring the annual celebration Ritmo & Sabor Festival! Featuring dance performances and FREE dance lessons and delicious, authentic Latin cuisine, this festival will be a fantastic celebration for the entire family to enjoy! Food and beer will be available for purchase. Come out to enjoy a great summer evening of Ritmo & Sabor!
Date: Saturday July 2, 2018
Location: International & Cultural Center, Charlotte
Time: 5-11 PM FREE ADMISSION Las Américas
Join us in the annual celebration LAS AMéRICAS! We display our history and identity of Latin America through musical performances, story-telling and poetry. Enjoy yourself with local artists, shop your way through a market of arts and crafts and join in some of the finest Latin American cuisine.
Date: August 18, 2018
Location: Midwood International & Culture Center, Charlotte
Time: 2-7 PM Admission is FREE.
Latin American Festival
Festival Latinoamericano returns for its 28th year, with musical artists and dance performances, a diverse authentic selection of Latin American food, visual artists, and a street festival environment with activities for the whole family.
Location: Symphony Park at South Park Mall, Charlotte
Date: Saturday Sept. 29 (1-8pm)
Admission: $10; Children aged 8 & under are free.
1. What does Ritmo & Sabor mainly provide?
A. Music and visual art.
B. Food and beer.
C. Dance and poetry.
D. Dance and food.
2. What can you do at Las Américas?
A. Buy some local crafts as souvenirs.
B. Enjoy typical Latin American beer.
C. Dance in green and yellow clothes.
D. Watch local dancers’ performances.
3. Which event requires a ticket for a seven-year-old child?
A. Las Américas.
B. Ritmo & Sabor.
C. A Night in Rio.
D. Latin American Festival.
B
At the age of 14, James Harrison had a major chest operation and he required 13 units (3.4 gallons) of blood afterwards. The blood donations saved his life, and he decided that once he turned 18, he would begin donating blood as regularly as he could.
More than 60 years and almost 1,200 donations later, Harrison, whose blood contains an antibody (抗体) that has saved the lives of 2.4 million babies from miscarriages (流产), retired as a blood donor on May 11. Harrison’s blood is valuable because he naturally produces Rh-negative blood, which contains Rh-positive antibodies. His blood has been used to create anti-D in Australia since 1967.
“Every bottle of Anti-D ever made in Australia has James in it,” Robyn Barlow, the Rh program director told the Sydney Morning Herald. “It’s an amazing thing. He has saved millions of babies. I cry just thinking about it.” Since then, Harrison has donated between 500 and 800 milliliters of blood almost every week. He’s made 1,162 donations from his right arm and 10 from his left.
“I’d keep going if they let me,” Harrison told the Herald. His doctors said it was time to stop the donations — and they certainly don’t take them lightly. They had already extended the age limit for blood donations for him, and they’re cutting him off now to protect his health. He made his final donation surrounded by some of the mothers and babies who his blood helped save.
Harrison’s retirement is a blow to the Rh treatment program in Australia. Only 160 donors support the program, and finding new donors has proven to be difficult. But Harrison’s retirement from giving blood doesn’t mean he’s completely out of the game. Scientists are collecting and cataloging his DNA to create a library of antibodies and white blood cells that could be the future of the anti-D program in Australia.
4. What do we know about James Harrison?
A. He saved 2.4 million poor people.
B. He is to retire as a blood donor.
C. He is a very grateful blood donor.
D. He donates blood nearly every day.
5. What is the author’s purpose of writing Paragraph 4?
A. To state Harrison’s decision to continue donating blood.
B.To describe how Harrison’s donations come to an end.
C.To introduce some babies saved by Harrison’s blood.
D. To praise Harrison for his cooperation with the doctors.
6.What can we infer from the passage about Harrison?
A. After his retirement, the Rh program will fail.
B. New donors are easy to find in a short time.
C. He continues to contribute to the Rh program.
D. His DNA is kept in a library for future study.
7. Which of the following can be the best title for the text?
A. A Unique Man with a Rare Blood Type
B. The Blood Saving Millions of Babies
D.A Special Blood Type Donor to Retire
D. The Man with the Golden Arm
C
It is becoming a growing trend that more and more consumers across the country are using cashless payment methods. The rapid development of third-party mobile payment tools is helping to boost cashless payments across the country, said Dong Ximiao, a researcher at the Renmin University of China.
Transactions (交易) involving third-party mobile payments rose by 46.8 percent in the first quarter of 2017 compared with the previous quarter to 18.8 trillion yuan, according to a report released in May.
Although there were 3.4 billion third-party payment accounts in total in China in 2016, China is not the first
increase.
However, the rapid development of cashless payments does not mean there are no challenges and criticisms. Alibaba’s Hema store, where customers can shop, dine and order commodities for delivery from their mobile phones via Alipay, have come into the spotlight recently. Media reports said that consumers can’t purchase goods with cash there, which would be considered illegal.
Alipay and WeChat Pay, the nation’s two major third-party mobile payment tools, also launched campaigns this month to encourage more merchants and customers to use cashless payment methods, which caused concerns over whether cash will soon disappear.
“Some offline sellers refuse to accept cash, which impacts the natural circulation of yuan,” said Dong. He emphasized that a cashless society would not mean that cash would completely disappear. As the economy grows, the circulation of cash is still very huge, noted Dong. Also, it’s important to remember that nearly half of China’s population live in rural areas, especially in undeveloped western regions, unable to enjoy innovation ( 革新) brought by the Internet, Dong said. And when it comes to China’s senior citizens, most of them prefer to use cash in their daily lives, he added.
“It’s ridiculous to question digital payment tools’ contribution toward financial development. In the long term, various payment methods will be used by consumers, and merchants should respect consumers’ payment habits,” Dong noted.
8. What does the underlined word “that” in paragraph 3 probably refer to?
A. Economic activity.
B. Cashless payment.
C. Development of economy.
D. Large amount of payment.
9. Why has Alibaba’s Hema store become a focus?
A. It fights against illegal activities.
B. It provides comprehensive services.
C. Customers are not permitted to use cash there.
D. It starts campaigns to encourage mobile payment.
10. Which of the following will Dong find reasonable?
A. Various payment methods ought to be respected.
B. People should be encouraged to use mobile payment.
C. Most elderly people have no access to mobile payment.
D. Mobile payment isn’t beneficial to a cost-effective society.
11. What is the text mainly about?
A. China’s cashless trend.
B. The research on mobile payment.
C. The reasons to use mobile payment.
D. China’s cashless future.
D
Learning is so complex that there are many different psychological theories to explain how people learn. A psychologist named Albert Bandura suggested a social learning theory which shows that observation, imitation (模仿), and modeling play a primary role in this process.
In Albert Bandura’s opinion, people can learn through observation. Observational learning doesn’t even necessarily require watching another person join in an activity. We can also learn by reading, hearing, or watching the actions of characters in books and films. However, just observing someone else’s actions isn’t always enough to lead to learning. Your own mental state also plays an important role in determining whether a behavior is learned or not. In addition, though in many cases, learning can be seen immediately when the new behavior is displayed, yet sometimes we can learn things even though that learning might not be immediately obvious, which means people can learn new information without showing new behaviors.
Not all observed behaviors are effectively learned. Certain requirements need to be related to the observational
observational learning as you need to pull up information later and act on it during the process. Once you’ve paid attention to the model and kept the information, it’s time to actually perform the behavior you observed. Further practice of the learned behavior leads to improvement. Finally, you have to be motivated to imitate the behavior that has been modeled.
Social learning theory have many real-world applications. For example, researchers employ it to look into and understand ways that positive role models can be used to encourage desirable behaviors. Besides, it’s also applied in the field of education, and today, both teachers and parents recognize how important it is to model appropriate behaviors.
12. What can we infer about observational learning from Paragraph 2?
A. Its effects on a person tend to be very obvious.
B. Its effectiveness is determined by the mental state.
C.Its most useful means should be careful watching.
D.It doesn’t necessarily lead to a change in behavior.
13. What does the underlined word “retention” in Paragraph 3 most probably mean?
A. Curiosity.
B. Creativity.
C. Memory.
D. Imagination.
14. What should you do to make observational learning successful?
A. Learn to be judgmental.
B. Look for a motivator.
C.Try to be imaginative.
D. Focus on the process.
A. was doubted at first
B. remains to be tested
C. is of practical use
D. is based on experiments
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。
If you’ve made a routine of a daily walk, congratulations! You’re getting many benefits of a walk.
But there’s one simple mistake that could be putting your life at risk. Almost 129,000 pedestrians were injured, and 5,376 were killed in traffic crashes in the United States in 2015, according to the Center for Disease Control
Luckily, there are some steps you can take to stay safe on foot. Sure, you drive on the right side of the road in
guarantee your safety. But if you have to stay on the road, the CDC recommends walking toward traffic.
cut the risk of getting hit by a car by an average of 77%, according to the findings.
from behind. That means you’d need to rely on the driver to see you and react if it’s coming up too closely. If the person behind the wheel is not absorbed, you could end up injured—or worse.
On the other hand, when you’re walking against traffic, you can see the cars heading toward you. Facing those vehicles lets you see danger coming and get out of the way if necessary, and you aren’t putting your life in the
long corridors of shopping malls.
A. If there’s a sidewalk available, you should always use it
B. Where it is convenient and clear, make sure to take the route
C. Next time you go for a walk or run, face the traffic and keep watchful
D. You may be taken aback by such a big difference between the choices
E. Look backwards and forwards all the time when you walk along the traffic
F. This means one crash-related pedestrian death every 1.6 hours
G. But a study of car accidents between 2006 and 2010 would argue otherwise
第二部分语言知识运用(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)
阅读下面的短文，从短文后各题所给的A、B、C 和 D 四个选项中，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。
them.
alive. Tiny new stems ( 茎) grew from the old ones a year later. And now, nearly all of them are flowering.
as long as you are alive, you can find new life within something you thought was never going to bloom (开花)
21. A. Because B. Although C. Unless D. If
22. A. bloom B. struggle C. live D. care
23. A. continue B. last C. manage D. go
24. A. fall B. grow C. thrive D. disappear
25. A. help B. stop C. keep D. stand
26. A. ruins B. vain C. need D. trouble
27. A. effort B. attempt C. research D. trial
28. A. reminded B. informed C. convinced D. warned
29. A. however B. therefore C. also D. otherwise
30. A. removed B. ignored C. placed D. sold
31. A. questioning B. wondering C. regretting D. doubting
32. A. decision B. conclusion C. agreement D. end
33. A. nothing B. everything C. something D. anything
34. A. style B. cycle C. pattern D. stories
35. A. stick to B. believe in C. build up D. give up
36. A. rescue B. mind C. notice D. way
37. A. Generally B. Normally C. Surprisingly D. Sadly
38. A. lose B. miss C. gain D. keep
39. A. trust B. confidence C. hope D. dream
40. A. great B. big C. hard D. slim
第二部分语言知识运用(共两节，满分45 分)
第二节(共10 小题；每小题 1.5 分，满分15 分)
阅读下面短文，在空白处填入 1 个适当的单词或括号内单词的正确形式。
A father, 41 son was 16 years old, was worried because his son had no courage at all. So the father made his 42 (determine) to call on a Buddhist monk (和尚) to train his boy.
The Buddhist monk said to the boy’s father43 (firm), “You should leave your son alone here. I’ll make him into a real man within three44 (month). However, you are not allowed 45 (come) to see him during this period.”
The deadline was due and the boy’s father returned. The Buddhist monk arranged a boxing match between the boy and 46 experienced boxer. Each time the fighter struck the boy, he fell down, but at once the boy stood up. Several times later, the Buddhist monk asked, “What do you think of your child?”
“What a shame!” the boy’s father said. “I never47 (think) in the past that he would be knocked down so easily. I won’t have him left here any48 (long).”
“I’m sorry that that’s all you see. Didn’t you see that each time he49 (strike) down, he stood up again instead 50 crying on the floor? That’s the kind of courage a real man should have.”
第三部分写作(共两节，满分35 分)
第一节短文改错(共10 小题；每小题l 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。
Last Tuesday was a special day, the Earth Day. My classmates and I do a series of activities to arouse for the
awareness of protecting our planet. We watched a movie, what made us realize that the earth is getting hotter but the ice at the North Pole is melting. Then we excited went to the park to plant trees. But digging holes for trees was such hard thing that we were all tired. In the afternoon, we collected cans, bottle and newspapers, and then took it to the recycling center. We donated the money we earned to a charity calling “We Are Together.” It was really a meaning day.
第二节书面表达(满分25 分)
假定你是李华，你在网站上看到英国留学生Terry 发帖，希望找人辅导他学汉语，并且愿意教英语作为回报。请你给他写封邮件，内容包括：
（1）表示愿意帮助他学汉语；
（2）说明你能胜任辅导的理由；
（3）提出你学习英语的具体需求。注意：
1.词数100 左右；
2.可以适当增加细节，以使行文连贯。
Dear Terry,
____________________________________________________________________________________________
Yours sincerely,
Li Hua
广东省珠海市2018年9月高三摸底考试英语科答案第一部分阅读理解( 共两节，每小题2 分，满分40 分) )
1-3 DAC 4-7 CB CD 8-11 BCAA 12-15 DCBC 16-20 FAGDC
第二部分语言知识运用(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)
21-25 CABAD 26-30 BDCAC 31-35 BDBBD 36-40 ACACD
第二节(共10小题；每小题 1.5分，满分15分)
41 whose 42 determination 43firmly 44 months 45 to come
46 an 47 thought 48 longer 49 was struck 50 of
第三分部分写作( 共两节，满分35分)
第一节短文改错(共共10小题；每小题l分，满分10分)
Last Tuesday was a special day, the Earth Day. My classmates and I do a series of activities to
did
and excitedly
plant trees. But digging holes for trees was such∧ hard thing that we were all tired. In the afternoon,
a
bottles them
called meaningful
第二节书面表达( 满分25分)
Dear Terry,
Hi! My name is Li Hua, a Chinese middle school student. I take intense interest in your post that you are in need of a Putonghua tutor and you can teach English in exchange. I am convinced that I’m the one you are searching for.
Your offer is meant for me for two reasons. Firstly, no one is a better Chinese language user than me in my city. As proven by the attachments, I’ve harvested dozens of provincial awards in the past five years. Secondly, I’ve tutored three foreign exchange students already,fulfilling their dreams to be a native Chinese. So I’m quite confident that we will soon begin our first lesson.
By the way, is it possible that we can video chat for half an hour in English every Saturday night after my Chinese tutoring? If possible, we can share all our stories, which will surely make it fun! Looking forward to your early reply.
Li Hua
Dear Terry,
Hi! My name is Li Hua, a Chinese middle school student. I learned from your post that you want to find a Chinese tutor and you can teach English in return. I am quite interested in it.I think I’m fit for it. Firstly, Chinese is my mother tongue, and speaking it is a must for me to communicate with others in my daily life. Secondly, I tutored foreigners to learn Chinese last year.So I’ m quite confident that I can help you master the language.In your post, you said you can help me with my English. It is just what I eagerly want. We can contact each other by video chat every night for half an hour in English and half an hour in
Chinese.In this way, we can improve ourselves together.
I’m looking forward to your reply.
Li Hua
2018年普通高等学校招生全国统一考试 英语 （考试时间：120分钟试卷满分：150分） 注意事项： 1. 答卷前，考生务必将自己的姓名、准考证号填写在答题卡上。 2. 作答时，务必将答案写在答题卡上，写在本试卷及草稿纸上无效。 3. 考试结束后，将本试卷和答题卡一并交回。 第一部分听力（共两节，满分30分）（略） 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A、B、C和D四个选项中，选出最佳选项。 A Summer Activities Students should read the list with their parents/careers, and select two activities they would like to do. Forms will be available in school and online for them to indicate their choices and return to school. Before choices are finalised, parents/careers will be asked to sign to confirm their child’s choices. 1 / 18
2 / 18
21.Which activity will you choose if you want to go camping? A.OUT. B.WBP. C.CRF. D.POT. 22.What will the students do on Tuesday with Mrs. Wilson? A. Travel to London. B. See a parade and fireworks. C. Tour central Paris. D. Visit the WWI battlefields. 23.How long does Potty about Potter last? A. Two days. B. Four days. C. Five days. D. One week. B Many of us love July because it’s the month when nature’s berries and stone fruits are in abundance. These colourful and sweet jewels form British Columbia’s fields are little powerhouses of nutritional protection. Of the common berries, strawberries are highest in vitamin C, although, because of their seeds, raspberries contain a little more protein (蛋白质), iron and zinc (not that fruits have 3 / 18
广东省实验中学2019届高三第二次阶段考试 理科综合 本试卷分选择题（第Ⅰ卷）和非选择题（第Ⅱ卷）两部分，共16 页，满分300 分， 考试时间150 分钟注意事项： 1．答卷前，请务必用黑色字迹的钢笔或签字笔将自己的班级、姓名和考号填写在答题卡和答卷上。 2．选择题在选出答案后，用2B 铅笔把答题卡上对应题目选项的答案涂黑，如需改动，用橡皮擦干净后，再选涂其他答案，答案不能答在试卷上。 3．非选择题必须用黑色字迹钢笔或签字笔作答，答案必须写在答卷各题目指定区域内相应位置上；如需改动，先划掉原来的答案，再写上新答案；不准使用铅笔和涂改液。不按 要求作答的答案无效。 4．考生必须保持答题卡的整洁。考试结束后，将答卷和答题卡一并交回。 【可能用到的相对原子质量：H1 C12 N14 O16 Na23 S32 F19 Cl 35.5 Fe 56 Cu 64】 第I 卷（选择题共126 分） 一、选择题（本题包括13 小题，每小题6 分，共78 分。在每小题给出的四个选项中，只 有一项符合题目要求。1-6 生物；7-13 化学） 1．下图是新鲜绿叶的四种光合色素在滤纸上分离的情况，以下说法正确的是（） A．水稻在收获时节，叶片中色素含量是(甲十乙)<(丙十丁) B．色素提取的原理是色素在层析液中的溶解度不同 C．四种色素都能溶解在层析液中，乙色素的溶解度 最大 D．四种色素，丙和丁主要吸收红光 2．下图是人的红细胞长时间处于不同浓度的NaCl 溶 液中，红细胞的体积（V）与初始体积（V0）之比的变化曲线；图乙是某植物细胞在一 定浓度的NaCl 溶液中细胞失水量的变化情况。下列分析正确的是（） A．从图甲可见，250mmol.L-1的NaCl 溶液不影响人红细胞的代谢 B．图乙中植物细胞体积的变化是先减少后一直增大 C．图乙中a 点细胞失水量最大，此时细胞吸水能力最弱 D．人的红细胞长时间在300mmol.L-1的NaCl 溶液中可能死亡，乙图中的处理时间内细胞一直有生物活性
适应性考试 理科数学 一、选择题:本大题共12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2 {430}A x x x =++≥，{21}x B x =<，则A B =I （ ） A ．[3,1]-- B ．(,3][1,0)-∞--U C ．(,3)(1,0]-∞--U D ．(,0)-∞ 【答案】B 【解析】(,3][1,)A =-∞--+∞U ，(,0)B =-∞， ∴(,3][1,0)A B =-∞--I U ． 2 ．若(z a ai =+为纯虚数，其中∈a R ，则 7 i 1i a a +=+（ ） A ．i B ．1 C ．i - D ．1- 【答案】C 【解析】∵z 为纯虚数，∴a = ∴7i 3i i 1i 3 a a +-====-+． 3．设n S 为数列{}n a 的前n 项的和，且*3 (1)()2 n n S a n = -∈N ，则n a =（ ） A ．3(32)n n - B ．32n + C ．3n D ．1 32n -? 【答案】C 【解析】1111223(1)2 3(1)2 a S a a a a ? ==-????+=-??，12 39a a =??=?， 经代入选项检验，只有C 符合． 4．执行如图的程序框图，如果输入的100N =， 则输出的x =（ ） A ．0.95 B ．0.98 C ．0.99 D ．1.00 【答案】C 【解析】1111 12233499100x = +++???+???? 111111199 (1)()()()2233499100100 =-+-+-+???+-= ．
珠海市2020-2021学年度第一学期高三摸底测试 数 学 2020.9 一、选择题：本题共8小题，每小题5分，共40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．设集合错误!未找到引用源。，错误!未找到引用源。，则错误!未找到引用源。 A ．错误!未找到引用源。 B ．错误!未找到引用源。 C ．错误!未找到引用源。 D ．错误!未找到引用源。 2．错误!未找到引用源。 A ．1 B ．2 C ．?i D ．?2i 3．8名医生去甲、乙、丙三个单位做核酸检测，甲、乙两个单位各需三名医生，丙需两名医生，其中医生a 不能去甲医院，则不同的选派方式共有 A ．280种 B ．350种 C ．70种 D ．80种 4．一球错误!未找到引用源。内接一圆锥，圆锥的轴截面为正三角形错误!未找到引用源。，过错误!未找到引用源。作与球错误!未找到引用源。相切的平面错误!未找到引用源。，则直线错误!未找到引用源。与平面错误!未找到引用源。所成的角为 A ．30° B ．45° C ．15° D ．60° 5．现有8位同学参加音乐节演出，每位同学会拉小提琴或会吹长笛，已知5人会拉小提琴，5人会吹长笛，现从这8人中随机选一人上场演出，恰好选中两种乐器都会演奏的同学的概率是 A ．错误!未找到引用源。 B ． 错误!未找到引用源。 C ． 错误!未 找到引用源。 D ．错误!未找到引用源。 6．若定义在错误!未找到引用源。上的奇函数f (x )在错误!未找到引用源。单调递增，且错误!未找到引用源。 ，则满足错误!未找到引用源。的解集是
A．错误!未找到引用源。B．错误!未找到引用源。 C．错误!未找到引用源。D．错误!未找到引用源。 7．已知P是边长为1的正方形ABCD边上或正方形内的一点，则错误!未找到引用源。的最大值是 A． 错误!未找到引用源。B．2 C．错误!未找到引用源。D． 错 误!未找到引用源。 8．直线错误!未找到引用源。是曲线错误!未找到引用源。和曲线错误!未找到引用源。的公切线，则错误!未找到引用源。 A．2 B． 错误!未找到引用源。C． 错误!未找到引用源。 D．错误!未 找到引用源。 二、选择题：本题共4小题，每小题5分，共20分。在每小题给出的选项中，有多项符合题目要求。 全部选对的得5分，有选错的得0分，部分选对的得3分。 9．已知双曲线错误!未找到引用源。的中心在原点，对称轴为坐标轴，渐近线方程为错误!未找到引用源。，则双曲线错误!未找到引用源。的离心率为 A． 错误!未找到引用源。B．错误!未找到引用源。C． 错误!未找到引用源。 D． 错 误!未找到引用源。 10．如图是函数错误!未找到引用源。错误!未找到引用源。的部分图象，则 (第10题图) A． 错误!未找到引用源。B． 错误!未找到引用源。 C． 错误!未找到引用源。D． 错误!未找到引用源。
绝密★启用前 2018年普通高等学校招生全国统一考试 英语 注意事项： 1．答卷前，考生务必将自己的姓名、准考证号填写在答题卡上。 2．回答选择题时，选出每小题答案后，用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。回答非选择题时，将答案写在答题卡上，写在本试卷上无效。 3．考试结束后，将本试卷和答题卡一并交回。 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。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 will James do tomorrow? A. Watch a TV program. B. Give a talk. C. Write a report. 2. What can we say about the woman? A. She’s generous. B. She’s curious. C. She’s helpful. 3. When does the train leave? A. At 6:30. B. At 8:30. C. At 10:30. 4. How does the woman go to work? A. By car. B. On foot. C. By bike. 5. What is the probable relationship between the speakers? A. Classmates. B. Teacher and student. C. Doctor and patient. 英语试题第1页（共14页）
广东省实验中学2021届高三年级第一次阶段考试 英语 本试卷分选择题和非选择题两部分，共10页，满分135分，考试用时120分钟。 注意事项： 1．答卷前，考生务必用黑色字迹的钢笔或签字笔将自己的校名、姓名、考号、座位号等相关信息填写在答题卡指定区域内。 2．选择题每小题选出答案后，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，再选涂其它答案；不能答在试卷上。 3．非选择题必须用黑色字迹的钢笔或签字笔作答，答案必须写在答题卡各题目指定区域内的相应位置上；如需改动，先划掉原来的答案，然后再写上新的答案；不准使用铅笔和涂改液。不按以上要求作答的答案无效。 4．考生必须保持答题卡的整洁。 第一部分选择题（共70分） 一、单项选择（共1 0个小题；每小题1分，满分1 0分） 根据题意，从每题所给的A、B、C和D四个选项中，选出最佳选项，并在答题卡上将该项涂黑。 1．It's time I about that essay. A．get down to think B．get down to thinking C．got down to think D．got down to thinking 2．The proposal that smart devices should carry security labels was introduced a voluntary basis at first, which the research findings that these devices were able to put consumers' privacy and security at risk. A．on, based on B．by, based on C．on, was based on D．by, was based on 3．She couldn't stop crying when her father gave her on the wedding. For all these years, it's been the two of them looking out for each other. She never gave in any difficulty in life, and her father never gave up her even though she failed for more times than most people could handle. A．off, on, to B．out, with, for C．away, to, on D．up, for, with 4．Our camping trip was by the heavy rain brought by the typhoon that mercilessly several coastal cities and left tens of thousands of people homeless. A．burned, destroyed B．harmed, damaged C．spoiled, damaged D．ruined, destroyed 5．She is a popular leader in the company because she treats the people who work for her as her
广东省2019届高考适应性考试 英语 本试题共8页，满分120分，考试用时120分钟。 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，考生务必将自己的姓名、 考生号、考场号和座位号填写在答题卡上。 2. 作答第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。写在本试卷上无效。 3. 作答第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 第一部分阅读理解（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，并在答题卡上将该选项涂黑。 A The guide to the live theater Cinderella World-famous San Francisco Ballet, America’s oldest ballet company, brings Christopher Wheeldon’s magical adaptation of Cinderella. ? November 13 at 1:30 & 7:30pm ? Kennedy Center Opera House ? https://www.doczj.com/doc/7b16931987.html, or call 202 4674600 ? Tickets available at the Box Office ? Tickets start at $25; students $15 Mary Poppins Celebrate the holidays with one of the most beloved tales of all time! You'll like the story of a wise nanny(保姆), two precious children, and the family she teaches how to love each other. ? Special Thanksgiving Week Schedule: Wednesday, Friday and Saturday at 2:00 pm & 8:00 pm Sunday at 2:00 pm ? Olney Theatre Center ? https://www.doczj.com/doc/7b16931987.html, or call 301 924 3400 ? Tick ets available at the Box Office ? Tickets start at $43
广东实验中学2015届高三阶段考试（一） 理 科 数 学 一．选择题(5*8=40分) 1．设集合A ＝{(x ，y )|x 24＋y 2 16 ＝1}，B ＝{(x ，y )|y ＝3x }，则A ∩B 的子集的个数是( ) A ．4 B ．3 C ．2 D ．1 2． 22log sin log cos 12 12π π +的值为（ ） A .-2 B .–l C. 1 2 D .1 3．已知x ，y ∈R ，则“1x y +=”是“1 4 xy ≤ ”的（ ） A ．充分不必要条件 B ．必要不充分条件 C ．充要条件 D ．既不充分也不必要条件 4．已知函数cos21 ()sin 2x f x x -= ，则有（ ） A ．函数()f x 的图像关于直线2 x π =对称 B ．函数()f x 的图像关关于点(,0)2 π 对称 C ．函数()f x 的最小正周期为2 π D ．函数()f x 在区间(0,)π内单调递减 5．已知0
广东省珠海市届高三摸底考试题目数学理
广东省珠海市 2011年9月高三摸底考试 数 学 试 题（理） 一、选择题：本大题共8小题，每小题5分，满分40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．请在答题卡上填涂相应选项． 1．已知集合2{|9},{|33}M x x N x z x ===∈-≤<,则M N = （ ） A ．? B ．{3}- C ．{3,3}- D ．{3,2,0,1,2}-- 2．对于平面α、β、γ和直线a 、b 、m 、n ,下列命题中真命题是 （ ） A ．若,,,,a m a n m n αα⊥⊥??,则a α⊥ B ．若//,a b b α?,则//a α C ．若,,//,//a b a b ββαα??,则//βα D ．若//,,,a b αβα γβγ==则//a b 3．()f x 是奇函数，则①|()|f x 一定是偶函数；②()()f x f x ?-一定是偶函数；③ ()()0f x f x ?-≥；④()|()|0f x f x -+=，其中错误的个数有 （ ） A ．1个 B ．2个 C ．4个 D ．0个 4．如图，是一个几何体的正视图（主视图）、侧视图（左视 图）、俯视图，正视图（主视图）、侧视图（左视图）都是矩形，则该几何体的体积是 A ．24 B ．12 C ．8 D ．4
5．命题“若一个数是负数,则它的平方是正数”的否命题是 （ ） A ．“若一个数是负数,则它的平方不是正数” B ．“若一个数的平方是正数,则它是负数” C ．“若一个数不是负数,则它的平方不是正数” D ．“若一个数的平方不是正数,则它不是负数” 6．某种动物繁殖量y （只）与时间x （年）的关系为3log (1)y a x =+,设这种动物第2 年有100只,到第8年它们将发展到 （ ） A ．200只 B ．300只 C ．400只 D ．500只 7．已知直线1l 与圆2 2 20x y y ++=相切,且与直线2:l 3460x y +-=平行,则直线1l 的方程是 （ ） A ．3410x y +-= B ．3410x y ++=或3490x y +-= C ．3490x y ++= D ．3410x y +-=或3490x y ++= 8．对于任意两个正整数,m n ,定义某种运算“※”如下:当,m n 都为正偶数或正奇数 时,m ※n =m n +;当,m n 中一个为正偶数,另一个为正奇数时,m ※n =mn ．则在此定义下,集合{(,)M a b a =※12,,}b a b **=∈∈N N 中的元素个数是 A ．10个 B ．15个 C ．16个 D ．18个 二、填空题：本大题共7小题，每小题5分，满分30分．其中14～15题是选做题， 考生只能选做一题，两题全答的，只计算前一题得分．请将答案填在答题卡相应位置． 9．设数列{}n a 的前n 项和2n S n n =+，则7a 的值为__ __． 10．已知双曲线的中心在原点,若它的一条准线与抛物线24y x =的准线重 合,则该双曲线的方程是 ．
广东省实验中学2018届高三上学期第一阶段测试 广东省实验中学2018届高三上学期第一阶段测试 第卷（阅读题共70分） 一、现代文阅读（35分） （一）论述类文本阅读（9分） 阅读下面的文字，完成1-3题。 古代中国很早就建立了一支庞大的官僚队伍。 中国历史上一个鲜明的规律就是，历代官员的数量呈不断扩张趋势。明代刘体健称历代官数，汉七千八百员，唐万八千员，宋极冗至三万四千员。到了明代，文武官员共十二万余人。 官僚系统的不断扩张，是皇权专制制度不断强化的结果。官权是皇权的延伸，君主专制不断完善，注定官僚系统也不断延伸膨胀。秦汉以后，中央集权不断发生强化，官员的权力被不断分割，以期官员相互制衡，弱化他们对皇权的挑战。由此造成一官多职的现象，官僚队伍进一步扩大。 中国传统社会经济结构非常单一，传统赋税又主要只有农业税一途，官员数量的不断膨胀，使得俸禄成为财政支出的第一大项。比如西汉末年，国家赋税收入一岁为四十余万石，吏俸用其半，官员俸禄支出占国家财政收入的一半。所以支付官俸成为财政第一大难题，为了节省开支，薄俸制就成为大多数时候不得已的选择。特别是在皇权专制达于极致的明清两朝，官员薪俸之低也达到惊人的程度。 低俸制的另一个原因是皇权专制的自私短视本性。皇权专制本身是一项不合理的制度安排，它的设计原理是千方百计保证君主的利益，损害其他社会阶层的利益，这其中就包括官僚阶层的利益。在君主专制制度下，皇帝好比一个公司的老总，百官好比员工。压低员工工资，保证自己的利润，对老板来说是一种本能的偏好。从皇帝的视角看来，采取薄俸制和低饷制，用教育来要求百官清廉，既省心省力，又为国家节省了大量财政经费。 传统社会的低俸制，到底低到什么程度？以明代的县令收入为例。明代正七品县令月俸只有七石五斗。用七石五斗粮食养活一个大家庭甚至家族，这个县令的生活只能是普通市民水平。而且明代对于官员办公费用不予考虑，师爷、账房、跟随、门房和稿签等手下均需要县令来养活。再比如曾国藩在做翰林院检讨时，年收入为129两左右，年支出为608两左右。赤字480两左右，需要自己想办法弥补。这是当时京官的常态。 低薪薄俸为朝廷节省了大量的财政支出，也有利于培育出一批清官楷模。但与此同时，薄俸制也有着巨大的危害：它容易诱发腐败，并导致腐败的普遍化。权力笼罩一切，权力不受约束。与此同时，官员们却又只能拿到极低的甚至不能满足基本生活需要的薪水。这就形成了渴马守水，饿犬护肉的局面：让一条饥饿的狗去看着一块肥肉，那么无论你怎么打它，骂它，教育它，它也还是要偷吃，因为不偷吃它就活不下去。在低薪制下，选择做清官的毕竟只是少数，多数官员们不得不想办法搞一些灰色收入，这样贪污就无法根治。对最高统治者来说，这是占小便宜吃大亏之举，因为腐败最后给国家造成的经济损失比开足工资要大得多。 （摘编自张宏杰《顽疾：中国历史上的腐败与反腐败》） 1．下列关于原文内容的表述，不正确的一项是 A．古代中国官员的数量随朝代更迭不断增加，在中国历史上是一个不争的事实。 B．秦汉以后，皇权专制不断细化分割官员权力，目的在于减少官员对皇权的影响。
广东省珠海市2021届高三上学期摸底考试 数学试卷 一、选择题：本题共8小题，每小题5分，共40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．设集合{}2|4A x x =>，{} 2|30B x x x =-<，则A B = A ．(5,2)(2,6)-- B ．(2,2)- C ．(,5) (6,)-∞-+∞D ．(,2) (2,)-∞-+∞ 2．27 (1)i i -= A ．1 B ．2 C ．?i D ．?2i 3．8名医生去甲、乙、丙三个单位做核酸检测，甲、乙两个单位各需三名医生，丙需两名医生，其中医生a 不能去甲医院，则不同的选派方式共有 A ．280种 B ．350种 C ．70种 D ．80种 4．一球O 内接一圆锥，圆锥的轴截面为正三角形ABC ，过C 作与球O 相切的平面α，则直线AC 与平面α所成的角为 A ．30° B ．45° C ．15° D ．60° 5．现有8位同学参加音乐节演出，每位同学会拉小提琴或会吹长笛，已知5人会拉小提琴，5人会吹长笛，现从这8人中随机选一人上场演出，恰好选中两种乐器都会演奏的同学的概率是 A ． 14 B ． 12 C ．38 D ． 5 8 6．若定义在R 上的奇函数f (x )在(0,)+∞单调递增，且(5)0f -=，则满足0)(xf x <的解集是 A ．(,5)(5,)-∞-+∞ B ．(,5)(0,5)-∞- C ．(5,0) (5,)-+∞D ．(5,0)(0,5)- 7．已知P 是边长为1的正方形ABCD 边上或正方形内的一点，则AP BP ?的最大值是 A ． 14 B ．2 C ．1 D ． 12 8．直线:l y kx b =+是曲线()ln(1)f x x =+和曲线2 ()ln()g x e x =的公切线，则b =
2018 年普通高等学校招生全国统一考试英语Ⅲ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） A Welcome to Holker Hall & Garden Visitor Information How to Get to Holker By car: Follow brown signs on A590 from. J36, M6. Approximate travel times: Windermere--20 minutes, Kendal--25 minutes, Lancaster-- 45 minutes, Manchester-- l hour 30minutes By rail: the nearest station is Cark-in-Cartmel with trains to Carnforth. Lancaster and Preston for connections to major cities & airports. Opening times Sunday-Friday（closed on Saturday） 11:00 am-4;00pm, 30 March-2nd November. Admission Charges Hall & Gardens Gardens Adults: ￡12.00 ￡8.00 Gropes: ￡9.00 Special Events Producers Market 13th April Join us to taste a variety of fresh local food and drinks. Meet the producers and get some excellent recipe ideas. Holker Garden Festival 30th May The event celebrates its 22nd anniversary with a great show of the very best of gardening, making it one of the most popular events in the gardening. National Garden Day 28th August Holker once again opens its gardens in aid of the disadvantaged. For just a small donation you can take a tour with our garden guide. Winter Market 8th November This is an event for all the family! Wander among a variety of shops selling gifts while enjoying a live music show and nice street entertainment. 21. How long does it probably take a tourist to drive to Holker from Manchester? A. 20 minutes. B. 25 minutes. C.45 minutes. D. 90 minutes. 22. How much should a member of a tour group pay a visit to Hall & Gardens? A. ￡12.00. B. 9￡.00. C. ￡8.00 D. ￡5.50 23. Which event will you go to if you want to see a live music show? A. Producers Market. B. Holker Garden Festival C. National Garden Day. D. Winter Market B Cities, usually have a good reason for being where they are, like a nearby port or river. People settle in these places because they are easy to get to and naturally suited to communications and trade. New York City, for example, is near a large harbour at the mouth of the Hudson River. Over 300 years its population grew gradually from 800 people to 8 million. But not all cities develop slowly over a long period of time. Boom towns grow from nothing almost overnight. In 1896, Dawson, Canada, was unmapped
2019-2020学年广东省实验中学高三（上）第一次段考物理试卷 一、单选题（本大题共5小题，共30.0分） 1.航母阻拦索用于拦停高速着舰的舰载机，被喻为“舰载机生命线”。如图所示为其结构简图， 滑轮1、2、3、4及液压缸a、b、c固定在甲板平面上，阻拦索绕过滑轮组后闭合。某时刻舰载机的挂钩勾住阻拦索，形成图示的夹角时，舰载机受到阻拦索的合力大小为F。不考虑阻拦索、滑轮的质量及摩擦，则此时单个柱塞所受阻拦索的合力大小为() A. F 3B. √3F 3 C. F D. √3F 2.从离地面3m高处竖直向上抛出一个小球，它上升5m后回落，最后到达地面此过程中() A. 小球通过的路程是8m B. 小球的位移大小是13m C. 小球的位移大小是3m D. 小球的位移方向是竖直向上 3.如图所示，物体A，B用细绳连接后跨过滑轮，A静止在倾角为45°的斜面上，B悬挂着。已知 质量m A=2m B，不计滑轮摩擦，现将斜面倾角由45°增大到60°，但物体仍保持静止，下列说法中正确的是() A. 绳子的张力增大 B. 物体A对斜面的压力将增大 C. 物体A受到的静摩擦力增大 D. 滑轮受到绳子的作用力保持不变
4.如图所示，三角块B放在斜面体A上，轻弹簧一端连接三角块B， 另一端连接在天花板上，轻弹簧轴线竖直，斜面的倾角为30°，若A 的质量为1kg，B的质量为0.5kg，地面对A的支持力大小为20N， 重力加速度为10m/s2，则A对B的摩擦力大小为 A. 0 B. 2.5N C. 5N D. 2√3N 5.用两段等长的轻质细线将a、b两个小球连接并悬挂于O点，如图 甲所示，球a受到水平向右的力3F的作用，小球b受到水平向左 的力F的作用，平衡时细线都被拉紧，若系统平衡时两球的位置 情况如图乙所示，则a、b两球质量之比为 A. 1:1 B. 1:2 C. 2:1 D. 2:3 二、多选题（本大题共3小题，共18.0分） 6.一物体做匀变速直线运动，t=0s时刻，初速度大小为4m/s，2s末的速度大小为9m/s，则此物 体的加速度大小为() A. 4m/s2 B. 9m/s2 C. 2.5m/s2 D. 6.5m/s2 7.如图甲所示是一种交警测速的工作示意图，B为能发射超声波的固定小盒子，工作时小盒子B 向被测物体发出短暂的超声波脉冲，脉冲被运动的物体反射后又被B盒接收，从B盒发射超声波开始计时，经时间Δt0再次发射超声波脉冲，图乙是连续两次发射的超声波的位移—时间图象，则下列说法正确的是() A. 超声波的速度为v声=2x2 t2 B. 超声波的速度为v声=2x1 t1
绝密★启用前 广东省2021届新高考适应性测试卷 数学（一） 本试卷满分150分，考试时间120分钟． 注意事项： 1.答卷前，考生务必将自己的姓名、准考证号等填写在答题纸上． 2.回答选择题时，选出每小题答案后，用铅笔把答题纸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．回答非选择题时，将答案写在答题纸上．写在本试卷无效． 3.考试结束后，将本试卷和答题纸一并交回． 一、选择题：本题共8小题，每小题5分，共40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.已知复数 4 1i z= - ，则|i| z-＝ A. B. C．2 D. 2. 已知集合{|12},{| A x x B x y =<<==，若A B A =,则m的取值范围是A.(0,1] B.(1,4] C.[1，+∞) D.[4,+∞) 3.《孙子算经》是我国古代内容极其丰富的数学名著，书中有如下问题：“今有圆窖周五丈 四尺，深一丈八尺，问受粟儿何？”其意思为：“有圆柱形容器，底面圆周长五丈四尺，高一丈八尺，求此容器能放多少斛米”(古制1丈= 10尺，1斛≈1.62立方尺，圆周率π≈3),则该圆柱形容器大约能放米 A. 900 斛 B.2 700斛 C.3 600斛 D.10 800斛 4.在一项调查中有两个变量x和y,下图是由这两个变量近8年来的取值数据得到的散点图，则选 项中适宜作为y关于的回归方程的函数类型是 A.y = a+bx B.y = c+d x C.y = m+nx2 D.y = p+qc x(q>0) 5.曲线y＝x l n x在点M(e,e)处的切线方程为 A.y = 2x+e B.y =2x-e C.y = x+e D.y =x-e 6.(1—x)(l+x)3的展开式中，x3的系数为 A.2 B. - 2 C.3 D. -3 数学（一）第1页（共4 页）
珠海市2020-2021学年度第一学期高三摸底考试 物理试题 （考试用时75分钟．满分100分） 第I 卷 选择题（共44分） 一、单项选择题:本题共8小题，每小题4分，共32分。每小题只有一个选项符合题目要求。 1．下列关于物理学史正确的是 A ．楞次发现了电磁感应现象 B ．卡文迪许利用扭秤装置测出了万有引力常量 C ．开普勒行星第三运动定律中的k 值只与地球质量有关 D ．伽利略通过理想斜面实验总结归纳出了牛顿第一定律 2．一体重为50kg 的同学站在电梯的体重计上，某时刻该同学发现体重计的示数为45kg ，此时 A ．该同学对体重计的压力小于体重计对该同学的支持力 g B ．电梯一定向下加速运动，加速度大小为 10 C ．该同学处于失重状态，但重力不变 D ．该同学的重力势能减小，动能增大 3．物体甲运动的x —t 图象和物体乙运动的v —t 图象分别如图所示，则这两个物体的运动情况描述正确是 A ．甲在0~6s 时间内来回运动，它通过的总位移为零 B ． 甲在0~6s 时间内运动方向一直不变，它通过的总位移大小为4m C ．乙在0~6s 时间内来回运动，它通过的总位移不为零 D ．乙在0~6s 时间内运动方向一直不变，它通过的总位移为零 4．A 、B 两物体在光滑水平地面上沿一直线相向而行，A 质量为5 kg ，速度大小为10 m/s ，B 质量为2 kg ， 速度大小为5 m/s ，两者相碰后，A 沿原方向运动，速度大小为4 m/s ，则B 的速度大小为 A ．10m/s B ．5m/s C ．6m/s D ． 12m/s 第3题图
2 第7题图 第5题图 5．珠海某学校新装了一批节能路灯如图甲所示，该路灯通过光控开关实现自动控制：电灯的亮度可自动随周围 环境的亮度改变而改变。如图乙为其内部电路简化原理图，电源电动势为E ，内阻为r ，R t 为光敏电阻（光照强度 增加时，其电阻值减小）。当随着傍晚到来光照逐渐减弱时，则下列判断正确的是 A ．A 灯变暗， B 灯变亮 B ．电源内阻消耗的功率变小 C ．电源的效率变小 D ．R t 上电流的变化量等于R 0上电流变化量 6．如图为汽车的机械式手刹（驻车器）系统的结构示意图，结构对称。当向上拉动手刹拉杆时，手刹拉索（不可伸缩）就会拉紧，拉索OD 、OC 分别作用于两边轮子的制动器，从而实现驻车的目的。则以下说法正确的是 A ．当OD 、OC 两拉索夹角为60°时，三根拉索的拉力大小相等 B ．拉动手刹拉杆时，拉索AO 上拉力总比拉索OD 和O C 中任何一个拉力大 C ．若在AO 上施加一恒力，O D 、OC 两拉索夹角越小，拉索OD 、OC 拉力越大D ．若保持OD 、OC 两拉索拉力不变，OD 、OC 两拉索越短，拉动拉索AO 越省力 第6题图 7．如图，虚线I 、Ⅱ、Ⅲ分别表示地球卫星的三条轨道，其中轨道I 为近地环绕圆轨道，轨道Ⅱ为椭圆轨道， 轨道Ⅲ为脱离轨道，a 、b 、c 三点分别位于三条轨道上，b 点为轨道Ⅱ的远地点，b 、c 点与地心的距离均为 轨道I 半径的2倍，则（ ） A ．卫星在轨道Ⅱ的运行周期与轨道I 的相同 B ．卫星经过a 点的速率为经过b 点的 倍 C ．卫星在a 点的加速度大小为在b 点的4倍 D ．质量相同的卫星在b 点的机械能等于在c 点的机械能 8．物块与水平桌面间动摩擦因数为μ，在大小为F 、方向如图所示的力作用下，物块恰能以加速度a 匀加速 向右运动。若改用方向不变、大小为2F 的力去推它，则物块的加速度大小为 A ．a B ．a +μg C ．2a +μg D ．2a +2μg 第8题图 A A
广东省2020年上学期珠海市高三语文摸底考试试题 2020.9 本试卷共 10 页，22 小题，满分 150 分。考试用时 150 分钟。 注意事项： 1．答卷前，考生务必将自己的姓名、准考证号填写在答题卡上。 2．回答选择题时，选出每小题答案后，用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。回答非选择题时，将答案写在答题卡上。写在本试卷上无效。 3．考试结束后，将本试卷和答题卡一并交回。 一、现代文阅读（36 分） （一）论述类文本阅读（本题共 3 小题，9 分）阅读 下面的文字，完成 1～3 题。 当今的许多挑战都关系到这个星球的共同利益。如果大家能够超越旧时代，用新的眼光 看待彼此、信任彼此，就不难集中精力携手应对 21 世纪日益复杂的情况和问题。人类进入 21 世纪能否学会珍惜和平？大国在格局变革的进程中能否守住和平？这是当今世界关心的问题。 剑桥大学的尼古拉斯·波伊尔教授，从国际关系500 年的历史中发现一个规律性的现象，似乎每个世纪的第二个十年总有改变百年走向的大事发生，例如战争、冲突或者和平安排。按照这个规律，今天国际学界热议大国关系的走向就不足为奇了，而中国和美国的关系往往成为焦点。 谈到中美关系，中美两国都明确表达了保持世界持久和平的政治意愿，并且正在为建立新型大国关系做出认真努力。双方通过多渠道对话在利益与矛盾中寻求平衡，毋庸讳言，这将是一个长期、艰苦的信任建立过程。冷战期间美国将投入的重点放在欧洲，“9·11”之后转向中东，现在正重新调整，要把重点放在亚洲。从时间上看，正是在东亚经济蓬勃发展、合作热火朝天的时候，美国向这个地区调整了军事部署、加强盟友军事协作，恰好中国周边也开始发生各种事件。人们关心的是，这种投入能否更加顺应亚洲地区发展合作的大势？ 美国教授梅尔文·莱弗勒写的《人心之争》一书，以详实的史料描绘了美苏在冷战中寻求缓和的四次重大时机，分析了彼此错过的原因。掩卷沉思，有两点体会，一是这两个大国虽然公开把对方的灭亡作为自己的政策目标，但实际上最牵扯他们精力的，却是如何防止发生正面冲突。二是，他们的对话始终不在一个频道上，当前苏联絮絮叨叨回忆二战教训、热衷军备竞赛时，美国则紧张地防范对方威胁。两国从未真正建立信任，缓和只是手段。今日的言行将构成明日的历史，正所谓，史乃势使然。 在崇尚“有资本就有权力”的西方，不少学者普遍认为世界权力正由西方向东方转移，由此引