课时跟踪检测（四） 物质的量在方程式计算中的应用
1．在反应X ＋2Y===R ＋2M 中，已知R 和M 的摩尔质量之比为22∶9，当1.6 g X 与Y 完全反应后，生成4.4 g R 。则在此反应中Y 和M 的质量之比为( ) A ．16∶9 B ．23∶9 C ．32∶9
D ．46∶9
解析：选A 由已知反应：
X ＋2Y===R ＋ 2M
M r (R) 2M r (M) 4.4 g m
由题意得M r (R)∶2M r (M)＝22∶18＝4.4 g ∶m ，解得m ＝3.6 g 。
根据质量守恒定律，参加反应的Y 的质量为4.4 g ＋3.6 g －1.6 g ＝6.4 g ，所以Y 与M 的质量比为6.4 g ∶3.6 g ＝16∶9。
2．(2020·吉林联考)把a L 含硫酸铵和硝酸铵的混合溶液分成两等份。一份加入含b mol NaOH 的溶液并加热，恰好把NH 3全部赶出；另一份需消耗c mol BaCl 2才能使SO 2－
4完全沉淀，则原溶液中NO －
3的物质的量浓度(mol·L －
1)为( ) A.b －2c a
B ．2b －4c a
C.2b －c a
D ．b －4c a
解析：选B n (NH ＋4)＝b mol ，n (SO 2－4)＝c mol ，根据电荷守恒知n (NO －3
)＝(b －2c )mol ，c (NO －3)＝
b －2c
a 2
mol·L －1。 3．在Al 2(SO 4)3、K 2SO 4和明矾的混合溶液中，如果c (SO 2－
4)等于0.2 mol·L －
1，当加入等体积的0.2 mol·L －1
的KOH 溶液时，生成的沉淀恰好溶解，则原混合溶液中K ＋
的物质的量
浓度为( ) A ．0.25 mol·L －1 B ．0.2 mol·L －
1 C ．0.45 mol·L －1
D ．0.225 mol·L －
1
解析：选A 根据Al 3＋＋4OH －===AlO －2＋2H 2O 可知，加入等体积的KOH 溶液时生成的沉淀恰好溶解，说明原溶液中c (Al 3＋)＝1
4
×0.2 mol·L －1＝0.05 mol·L －1。设K ＋的物质
的量浓度为x mol·L －1，则根据电荷守恒可知，c (K ＋)＋c (Al 3＋)×3＝c (SO 2－4)×2，即x
mol·L －1＋0.05 mol·L －1×3＝0.2 mol·L －1×2，解得x ＝0.25。
4．工业上，利用黄铜矿(主要成分是CuFeS 2)冶炼金属，产生的废气可以制备硫酸。某黄铜矿中铜元素的质量分数为a %(假设杂质不含铜、铁、硫元素)，其煅烧过程转化率为75%，得到的SO 2转化为SO 3的转化率为80%，SO 3的吸收率为96%。现有黄铜矿100 t ，其废气最多能制备98%的硫酸( ) A ．1.8a t B ．2.8a t C ．3.2a t
D ．4.5a t
解析：选A 根据题中转化过程中物质变化及物质中硫原子守恒可得关系式：CuFeS 2～2SO 2～2SO 3～2H 2SO 4，根据黄铜矿中铜元素的质量分数为a %可得100 t 黄铜矿中n (CuFeS 2)＝n (Cu)＝100×106 g ×a %64 g·mol －1＝1×106×a 64 mol ，则根据关系式及各步的转化率可
知n (H 2SO 4)＝2n (CuFeS 2)×75%×80%×96%＝1.8a ×104 mol ，则能制备98%的硫酸的质量为1.8a ×104 mol ×98 g·mol －1
98%
＝1.8a ×106 g ＝1.8a t 。
5．乙烯和乙烷的混合气体共a mol ，与b mol O 2共存于一密闭容器中，点燃后充分反应，乙烯和乙烷全部消耗完，得到CO 和CO 2的混合气体和45 g H 2O ，试求： (1)当a ＝1时，乙烯和乙烷的物质的量之比n (C 2H 4)∶n (C 2H 6)＝________。
(2)当a ＝1，且反应后CO 和CO 2混合气体的物质的量为反应前O 2的2
3时，b ＝________，
得到的CO 和CO 2的物质的量之比n (CO)∶n (CO 2)＝________。
解析：(1)设原混合气体中C 2H 4、C 2H 6的物质的量分别为x 、y ，则
?
??
x ＋y ＝1 mol 4x ＋6y ＝45 g
18 g·mol －
1
×2 解得x ＝y ＝0.5 mol ，所以n (C 2H 4)∶n (C 2H 6)＝1∶1。
(2)根据碳原子守恒，n (CO)＋n (CO 2)＝2[n (C 2H 4)＋n (C 2H 6)]＝2a mol ，因为a ＝1，且n (CO)＋n (CO 2)＝2b 3 mol ，所以2＝2b
3，b ＝3，设反应后混合气体中CO 、CO 2的物质的量分别
为x 、y ，则：
?
??
x ＋y ＝2 mol (碳原子守恒)
x ＋2y ＝3 mol ×2－45 g
18 g·mol －
1
(氧原子守恒)
解得x ＝0.5 mol ，y ＝1.5 mol ，所以n (CO)∶n (CO 2)＝1∶3。
答案：(1)1∶1 (2)3 1∶3
6．水泥是重要的建筑材料。水泥熟料的主要成分为CaO 、SiO 2，并含有一定量的铁、铝和镁等金属的氧化物。实验室测定水泥样品中钙含量的过程如图所示：
草酸钙沉淀经稀H 2SO 4处理后，用KMnO 4标准溶液滴定，通过测定草酸的量可间接获知钙的含量，滴定反应为MnO －
4＋H ＋
＋H 2C 2O 4―→Mn 2＋
＋CO 2＋H 2O 。实验中称取0.400 g 水泥样品，滴定时消耗了0.050 0 mol·L －1
的KMnO 4溶液36.00 mL ，则该水泥样品中钙的质
量分数为________。
解析：根据反应中转移电子数相等可找出关系式2MnO －4～5H 2C 2O 4，结合消耗KMnO 4溶液的浓度和体积可求出n (H 2C 2O 4)＝0.050 0 mol·L －1×36.00×10－3 L ×52＝4.5×10－3 mol ，则该水
泥样品中钙的质量分数为4.5×10－3 mol ×40 g·mol －1
0.400 g ×100%＝45.0%。
答案：45.0%
7．过氧化钙晶体(CaO 2·8H 2O)可用于改善地表水质、处理含重金属粒子废水、应急供氧等。
(1)已知：I 2＋2S 2O 2－
3===2I －
＋S 4O 2
－
6，测定制备的过氧化钙晶体中CaO 2的含量的实验步
骤如下：
第一步：准确称取a g 产品放入锥形瓶中，再加入过量的b g KI 晶体，加入适量蒸馏水溶解，再滴入少量2 mol·L －1
的H 2SO 4溶液，充分反应。
第二步：向上述锥形瓶中加入几滴淀粉溶液。
第三步：逐滴加入浓度为c mol·L
－1
的Na 2S 2O 3溶液发生反应，滴定达到终点时出现的现
象是________________________________________________________________________ ___________________________________________________________________________。 若滴定消耗Na 2S 2O 3溶液V mL ，则样品中CaO 2的质量分数为________(用字母表示)。
(2)已知过氧化钙加热至350 ℃左右开始分解放出氧气。将过氧化钙晶体(CaO 2·8H 2O)在坩埚中加热逐渐升高温度，测得样品质量随温度的变化如图所示，则350 ℃左右所得固体物质的化学式为______________。
解析：(1)根据得失电子守恒，可得关系式CaO 2～I 2～2S 2O 2－3，则样品中CaO 2
的质量分数为cV ×10－3×722×a ×100%＝36cV ×10－3
a ×100%。
(2)CaO 2·8H 2O 的摩尔质量为216 g·mol －1，故2.16 g 过氧化钙晶体为0.01 mol,350 ℃左右所得固体质量为0.56 g ，根据钙原子守恒，可知为CaO 。
答案：(1)溶液由蓝色变无色，且30 s 内不恢复蓝色 36cV ×10－
3
a
×100% (2)CaO
8．人体血液里Ca 2＋
的浓度一般采用mg·cm －3
来表示。抽取一定体积的血样，加适量的草酸
铵[(NH 4)2C 2O 4]溶液，可析出草酸钙(CaC 2O 4)沉淀，将此草酸钙沉淀洗涤后溶于强酸可得草酸(H 2C 2O 4)，再用酸性KMnO 4溶液滴定即可测定血液样品中Ca 2＋
的浓度。
抽取血样20.00 mL ，经过上述处理后得到草酸，再用0.020 mol·L
－1酸性KMnO 4溶液滴
定，使草酸转化成CO 2逸出，这时共消耗12.00 mL 酸性KMnO 4溶液。
(1)已知草酸与酸性KMnO 4溶液反应的离子方程式为2MnO －
4＋5H 2C 2O 4＋6H ＋
===2Mn x ＋
＋10CO 2↑＋8H 2O ，则其中的x ＝________。 (2)经过计算，血液样品中Ca 2＋
的浓度为______mg·cm －
3。
解析：(1)由电荷守恒可得x ＝2。(2)血样处理过程中发生反应的离子方程式依次是：①
Ca 2＋＋C 2O 2－4===CaC 2O 4↓；②CaC 2O 4＋2H ＋===Ca 2＋＋H 2C 2O 4；③2MnO －4＋5H 2C 2O 4
＋
6H ＋===2Mn 2＋＋10CO 2↑＋8H 2O ，由此可得关系式：5Ca 2＋～5CaC 2O 4～5H 2C 2O 4～2MnO －4，所以n (Ca 2＋)＝52n (MnO －4
)＝52×0.012 00 L ×0.020 mol·L －1＝6.0×10－4 mol ，血液样品中Ca 2＋的浓度＝40 g·mol －1×6.0×10－4 mol
20.00 cm 3＝1.2×10－3 g·cm －3＝1.2 mg·cm －3。
答案：(1)2 (2)1.2
9．利用钴渣[含Co(OH)3、Fe(OH)3等]制备钴氧化物的工艺流程如下：
Unit 5 Languages Around the World Period One 1.Chinese c__________ are made out of simple basic strokes. 2. C is the art of producing beautiful handwriting using a brush. 3. Like China, the USA is a large country in which many different d are spoken. 4. The rose is regarded as a s of love in both China and some Western countries. 5. Carbon dioxide(CO?) is one of the main (因素) in global warming which is negatively affecting everyone. II.Blank filling.（在空白处填入适当的内容（1个单词）或括号内单词的正确形式。） 1.Diligence is the means which one makes up for one's dullness(迟钝). 2. Health problems _________ (connect) with bad eating habits and a lack of exercise. 3. There are various reasons people choose to learn a foreign language 4. In the last few years the city of Bozhou has spread out rapidly in all (direction). 5. the growing heat these workers are still all in top hats and heavy uniforms. 6. They enjoy participating in a wide ________(various) of activities, both locally and further afield. 7. To meet the needs of _________ unified country, the First Qin Emperor took a series of measures. 8. We think that peace is not only a distant goal we seek, it is a means by which we arrive at that goal. 9. Today, Spanish is the world’s fourth most commonly(speak) language, after Chinese, English and Hindi. 10. Changing the attitude _____ learning foreign languages may be a hard task but the government decides to try! 1. I live in the place which the medicine capital city Bozhou. 2. students are registering for extra-curricular activities. 3. Every means has been tried, but we find only _______________ can we learn English well. 4. Chinese is an old language, and its earliest characters nearly four thousand years ago. 5. Because of his broken English, he couldn’t make himself understood, which the embarrassment. 6. The designer, with whom I have been working since 1999, shaping my views of the work. 7. There are extra-curricular activities including sports, painting, dancing and playing music as well. 8. It is what parents say and do in family life, which may have a life-long effect on their children. 9. In southern China,bats the door, because they are symbols of luck, health, wealth and happiness. 10. The school year two semesters, the first of which is September through December, the second January through May. IV. Cloze. （在空白处填入适当的内容（1个单词）或括号内单词的正确形式。） Nobody wants to be aged, but____1____it comes to visiting cities, most of us want to visit the world's oldest cities. Luoyang is one of the oldest and most ____2____(attract) cities in the world that I'd like to recommend to you. Luoyang stands out ____3____the oldest continually inhabited (持续居住的) city in Asia. The city is considered to be ____4____birthplace of Chinese culture and history as well as being one of the Seven Ancient Capitals of China. There ____5____ (be) no other city in China that has seen so many____6____(dynasty) like Luoyang. With such a long and exciting history, Luoyang has really a lot ____7____ (offer). The longmen Grottoes(龙门石窟), which ____8____(include) in the world Heritage List (世界遗产名录)since 2000, and many historic Buddhist temples constantly attract tourists from all over the world. Luoyang is also famous 9 the White Horse Temple, the earliest Buddhist temple ____10____(build) in China. Are you anxious to visit the city? V. Reading Comprehension
课时跟踪检测(十二) 苏武传 (时间：40分钟 满分：50分) 一、基础巩固(18分，每小题3分) 1．下列各句中加点词语的解释不正确的一项是( ) A ．单于使使晓武，会论． 虞常 论：判罪 B ．汉使张胜谋杀单于近臣， 当． 死 当：应当 C ．扶辇下除． ，触柱折辕 除：殿阶 D ．律前负． 汉归匈奴 负：背叛 解析：选B B 项，“当”，判处。 2．下列句子中，没有通假字的一句是( ) A ．与旃毛并咽之 B ．掘野鼠去草实而食之 C ．大臣亡罪夷灭者数十家 D ．武与副中郎将张胜及假吏常惠等募士斥候百余人俱 解析：选D A 项，“旃”同“毡”；B 项，“去”同“弆”；C 项，“亡”同“无”。 3．下列各组句子中，加点词的意义和用法完全相同的一组是( ) A.????? ①少以．父任，兄弟并为郎②恐前语发，以． 状语武 B.????? ①乃．徙武北海上无人处②使牧羝，羝乳乃．得归 C.????? ①久之．，单于使陵至海上②宜皆降之． D.????? ①虽．生，何面目以归汉②虽．蒙斧钺汤镬，诚甘乐之 解析：选D D 项，均为连词，即使。A 项，第一个“以”，介词，意为“因为”；第二个“以”，介词，意为“把”。B 项，第一个“乃”，连词，意为“于是”；第二个“乃”，副词，意为“才”。C 项，第一个“之”为音节助词，无实义；第二个“之”，代词，“他们”。 4．下列各句中，加点词语的意义与现代汉语相同的一项是( ) A ．汉天子我丈人．． 行也 B ．会缑王与长水虞常等谋反．． 匈奴中 C ．武使匈奴，明年．． ，陵降，不敢求武 D ．武父子亡功德，皆为陛下所成就．．
课时跟踪检测(十六) 人口迁移 地域文化与人口 一、选择题 (2013·崇雅模拟)下表为“美国1965～1983年不同地区的净移民人口数量表(单位：千人)”。读表回答1～2题。 1．与此时期美国人口迁移特点不符的是( ) A ．70年代东北部地区迁出人口多于迁入人口 B ．70年代以后，南部地区一直是人口迁入地区 C ．80年代以后，东北部地区由人口迁出地区变为人口迁入地区 D ．80年代以后，迁往“阳光地带”的人口数量明显减少 2．导致此时期美国地区间人口迁移的主要原因是( ) A ．环境质量的变化 B ．地区间气候差异 C ．经济收入的变化 D ．经济结构的调整 (2013·济南调研)下图为“某地人口迁移与年龄关系示意图”。读图回答3～4题。 3.从图中判断，影响该地区人口迁移的主要因素最有可能是( ) A ．人口老龄化 B ．婚姻家庭 C ．政治因素 D ．经济因素 4．图中甲、乙、丙、丁不同年龄段的人口迁移有明显相关性的是( ) A ．甲、乙 B ．甲、丙 C ．乙、丙 D ．乙、丁 重男轻女指数是指希望生育男孩的母亲人数与希望生育女孩的母亲人数的比例，下表是
联合国人口机构2006年公布的部分国家的“重男轻女指数表”。读表回答5～6题。 A ．韩国、泰国、菲律宾 B ．菲律宾、泰国、尼泊尔 C ．巴基斯坦、尼泊尔、韩国 D ．哥伦比亚、肯尼亚、委内瑞拉 6．地域文化对人口的影响是通过影响人们的生育意愿而表现出来的。下列叙述正确的是( ) A ．“男孩偏好”的传统与“稻米文化”密切相关 B ．中国的儒家文化有“男性偏好”的传统思想，但重视子女的质量和注重自我发展 C ．发达国家受基督教的影响，没有性别偏好 D ．“重男轻女指数”反映发展中国家普遍渴望生育男孩 下图是“根据联合国于2000年发布的预测报告绘制的2001～2050年部分国家迁入人口趋势图”。读图完成7～8题。 7．关于人口迁移流向的叙述，正确的是( ) A ．由人口多的国家迁往人口少的国家 B ．由发展中国家迁往发达国家 C ．全球迁出人口少于迁入人口 D ．由东半球国家迁往西半球国家 8．下列关于人口迁移影响的叙述，正确的是( ) A ．减轻了迁入地的就业压力 B ．加重了迁出地的环境压力 C ．为迁入地提供劳动力，促进经济发展
课时跟踪检测(四) Project Ⅰ.单词拼写 1．A kingdom (王国) is a country that is ruled by a king or a queen. 2．Though they came from different places, they live in perfect harmony (融洽)． 3．“Of course I don't mind，” she answered mildly (温和地)． 4．They have officially (正式地) announced their engagement. 5．They are surrounded (环绕) with dangers. 6．The article accurately reflects (反映) public opinions. Ⅱ.单句改错 1．His parents died, left him an orphan.left→leaving 2．How many members have official registered in the club？official→officially 3．When her son finally left home, Emily felt completely at loss.at后加a 4．He works at perfect harmony with his colleagues.at→in 5．I have such little interest in English that I almost have to give it up.such→so 6．Being surrounded by big mountains, the village is almost unknown to people outside.去掉Being Ⅲ.句型转换 1．He always thinks of me as a fool. →He always considers me to be a fool. 2．He ran so fast that I could hardly keep pace with him. →So fast did he run that I could hardly keep pace with him. 3．I hope that you will live harmoniously with your new neighbors. →I hope that you will live in harmony with your new neighbors. 4．A group of soldiers in rags were marching in the depth of the forest. →Marching in the depth of the forest were a group of soldiers in rags. 5．The beautiful sunrise on the top of Mount Tai left us speechless. →The beautiful sunrise on the top of Mount Tai left us at a loss for words. Ⅳ.完形填空 Half a year before graduation from college, my son began to seek a job. __1__ the financial crisis, fewer companies would like to __2__ new staff. My son targeted a company that was __3__ to hire only one person __4__ there were more than twenty people filling their resumes. After the interview, there would only be 3 who could enter the final round, which would later __5__ one person to be employed. Everything seemed to go quite __6__ and my son passed the first round and entered the final round in a week. On the day of the final interview, my son and the other two __7__ arrived at the interview
课时跟踪检测(三) (时间：40分钟满分：52分) 一、基础巩固(12分，每小题3分) 1．下列各组词语中加点的字的读音完全不相同的一项是() A．挨．打/挨．近提．防/提．案连累．/负债累．累 B．发．动/发．廊相．貌/相．互施舍．/退避三舍． C．兴．趣/兴．奋数．说/数．控混．蛋/混．水摸鱼 D．要塞．/塞．外转．变/旋转．冠．军/怒发冲冠． 解析：选B A项，ái/āi，dī/tí，lěi；B项，fā/fà，xiàng/xiāng，shě/shè；C项，xìng/xīng，shǔ/shù，hún；D项，sài，zhuǎn，guàn/guān。 2．下列各句中，加点的成语使用正确的一项是() A．他在长达一个小时的演讲中引经据典 ．．．．，用大家所熟知的名人、名言、名事来作妙喻，给人留下了深刻印象。 B．今年的第一场春雨不期而遇 ．．．．，虽然没有电视台预报的降水量大，但还是让京城一直干燥的空气变得湿润了一些。 C．伴着落日的余晖，诗人缓步登上了江边的这座历史名楼，极目远眺，晚霞尽染，鸿 雁南飞，江河日下 ．．．．，诗意油然而生。 D．满车的猪崽儿从车上重重摔到地面，有的被活活摔死，有的挤压成一堆嗷嗷待哺 ．．．．，现场一片狼藉。 解析：选A A项，“引经据典”，引用经典中的语句或故事。B项，“不期而遇”，没有约定而意外地相遇。一般用于人与人之间，这里用错对象。C项，“江河日下”，江河的水天天向下游流，比喻情况一天天坏下去。本句望文生义，理解成“落日下的江河”，错。D项，“嗷嗷待哺”，饥饿时急于求食的样子。形容受饥饿的悲惨情景。这里指叫声，应用“嗷嗷乱叫”。 3．下列各句中，没有语病的一句是() A．实施创新驱动发展战略，要面向世界科技前沿，瞄准国家的需求，创新成果转化为实实在在的新技术、新产品、新产业。 B．相关人士指出，3D打印建筑刚刚诞生，缺少必要的安全与质量规范，不过，它能否替代传统的房屋建筑方式，还有待时间的检验。 C．亚洲基础设施投资银行是中国倡议并主导建立的多边国际金融机构，其主要目标是促进亚洲各国的基础设施建设和经济一体化。 D．随着网络购物的兴起，我国快递业务发展迅猛，2014年快递业务量达140亿件，同比增长52%，跃居世界第一的份额。 解析：选C A项，缺少介词，应在“创新成果转化……”前面加上“将”。B项，主
高中校本教材新高考·新理念·新教材课时跟踪检测（必修一） Unit 1 Teenage Life Period Two 命题人: 班级：姓名： 1.The school is responsible for the ___________(安全) of all the students. 2. Choosing a suitable _______ (标题)for your passage is of great importance. 3. I hope I can join your company when I g_________ from Peking University. 4. The volunteer work experience is a great way to give back to the ___________(社区). 5. Getting a notebook to help you keep a _________(计划；安排) of the things will stop you putting things off. II.Blank filling.（在空白处填入适当的内容（1个单词）或括号内单词的正确形式。） 1. It’s _________ big challenge for you to complete any personal goal in time. 2. All the students are brave enough to face up to __________ comes up in the future. 3. Whenever I'm facing a __________(difficult), I always tell myself, "Don't ever quit!" 4. The first week was all a bit confusing, _________soon I got used to the new school life. 5. We can try a course for two weeks after we register for it. After that, we cannot change _______. 6. Nowadays, parents take more _________(responsible) for the education of their children than before. 7. Girls used to take fewer _________(advance) math courses than boys but now they are taking just as many. 8. I find it really _______(annoy) when some students say I got good marks in the exams because of being lucky. 9. We _______(high) recommended that students read some materials from the English-speaking countries. 10. I find that looking after children is a __________(challenge) job where you need to be patient and careful. 1.The runner failed to __________________ the others though he tried his best. 2.There was nobody else at hand, so we had to do all this ___________________. 3.We have to ______________________ whatever the future may have in store. 4.We are going to set up a food bank _______________ food to hungry people. 5.We are told to ______________ keeping the room tidy and cleaning the chalkboard. 6. I am going to start my first job, but I what to wear for work. 7. —I have the Oral English Competition. —What a ridiculous idea. You even don’t know how to introduce yourself in English. 8. He used to live in the countryside but now he living in the noisy area. 9. Before we leave here, we need to what to take and what to leave behind. 10.These workers had been in the United States for twenty or more years and therefore English. III. Cloze. （在空白处填入适当的内容（1个单词）或括号内单词的正确形式。） “The secret to getting ahead is getting started.” — Mark Twain S taying active in more ways than one. First of all, don’t be a bystander. Don’t let things pass you by 1 you are there to experience them. Try a new fitness schedule, join a club, find new ways 2 (meet) people, play basketball o r team sports. The second piece of “staying active” has to do 3 taking action—there is a difference between saying you are going to do something 4 actually carrying it out. Mean what you say and say what you mean. Seize 5 (opportunity) when you can. “Am I something? And the answer comes, already am, always was, and I still have time to be.” — Anis Mojgai You live your life in a small community at a small school and you only see a small piece of the world. Then, Suddenly you 6 (throw) into a large community at a large school, where there are thousands of young, insecure, definitely 7 (confuse) freshmen. They are all trying to fit in, 8 if everybody is trying to be someone they are not, no one can see them for who they really are. Don’t feel the need to obey anyone else’s idea of 9 you should be as a freshman. This goes along with being true to yourself, but there is a large amount of freedom that 10 (come) from being confident in who you are. Good habits formed at youth make all the difference. - 1 -
课时跟踪检测（一） Welcome to the unit & Reading — Language points Ⅰ.单句语法填空 1．There are 30 people injured in the traffic accident but the injured were rescued at once.(injure) 2．She was confident of her becoming popular with the students. 3．I didn't want to add to my mother's worry, so I hurried home. 4．It is reported in the newspaper that talks between the two countries are making progress. 5．He appears careless, but in reality, he is a very careful person. Ⅱ.完成句子 1．如果你认为这样方便的话，我们把时间定在下午六点。 If you think that it_is_convenient_to_you,_we will fix the time at 6：00 pm. 2．我们都赞成他在会上提出的计划。 We all agreed to the plan he_had_put_forward at the meeting. 3．球队和球迷确信能够赢得即将到来的比赛。 The team and the fans are_confident_of_winning the coming match. 4．她吃了一惊，他居然还记得她的名字。 It_amazed_her that he still remembered her name. 5．需要采取措施使农田免遭洪水的侵袭。 Some measures are needed to_secure_the_farmland_against/from floods. 6．一看到这张聚会照片，她就陷入了对过去的美好回忆中。 No_sooner_had_she_seen the get-together photo than she got lost in the old sweet memories. 7．已经证明你的计划是实用的。 It_has_been_proved_that your plan is practical. Ⅲ.完形填空 Throughout history, many great leaders and explorers have tried hard to find objects or other ways to live forever. While it might sound __1__ to live forever, I believe that what makes life so __2__ is that it doesn't last forever. So, I don't __3__ that living forever is a good idea. For one thing, I think living forever would be very __4__. We always have to find ways to __5__ ourselves in a normal lifetime. __6__ you lived forever, you would still
课时跟踪检测（五十六）物质的检验 1．下列实验可实现鉴别目的的是() A．用KOH溶液鉴别SO3(g)和SO2 B．用湿润KI-淀粉试纸鉴别Br2(g)和NO2 C．用CO2鉴别NaAlO2溶液和CH3COONa溶液 D．用BaCl2溶液鉴别AgNO3溶液和K2SO4溶液 解析：选C SO2、SO3(g)均能与KOH溶液反应，都没有明显现象，A项错误。Br2(g)、NO2都是红棕色气体且有强氧化性，都能氧化KI而生成I2，使淀粉显蓝色，B项错误。 偏铝酸的酸性弱于碳酸，CO2通入NaAlO2溶液中生成Al(OH)3沉淀，醋酸酸性强于碳酸，CO2通入CH3COONa溶液无现象，C项正确。BaCl2溶液和AgNO3溶液反应生成AgCl 沉淀，BaCl2溶液和K2SO4溶液反应生成BaSO4沉淀，现象相同不能鉴别，D项错误。2．下列有关叙述正确的是() A．将木炭和浓硫酸在加热条件下反应生成的气体通入澄清石灰水中，有白色沉淀生成，该气体一定是CO2 B．能使品红溶液褪色的气体一定是SO2 C．某红棕色气体溶于水形成溶液，该气体一定是NO2 D．某物质燃烧后的产物既能使白色硫酸铜粉末变蓝，又能使澄清石灰水变浑浊，该物质可能是碳氢化合物 解析：选D木炭和浓硫酸在加热条件下反应可生成CO2和SO2，而SO2和CO2均可以使澄清石灰水变浑浊，A项错误；能使品红溶液褪色的气体可能是SO2，还可能为具有漂白性的其他气体，如Cl2等，B项错误；NO2、溴蒸气均为红棕色气体且溶于水均能形成溶液，C项错误；D项中的现象只能说明该物质一定含有碳、氢元素，则该物质既可能为碳氢化合物，也可能为含有碳、氢、氧元素的化合物，正确。 3．(2020·奉新模拟)已知：SO2－3＋I2＋H2O===SO2－4＋2I－＋2H＋。某溶液中可能含有Na＋、NH＋4、K＋、I－、SO2－3、SO2－4，且所有离子物质的量浓度相等。向该无色溶液中滴加少量溴水，溶液仍呈无色。下列关于该溶液的判断正确的是() A．肯定不含I－B．肯定含有SO2－4 C．肯定含有SO2－3D．肯定含有NH＋4 解析：选C溶液中加入少量溴水，溶液仍呈无色，原溶液中一定有SO2－3；由方程式可知SO2－3的还原性比I－强，可能是SO2－3过量，溴水全部和SO2－3反应，说明溶液中可能
Unit 2 Robots Learning about Language Using Language Ⅰ.单句语法填空 1．It was an absurd arrangement, bound to_lead (lead) to catastrophe. 2．She is junior to me but she looks mature. 3．The young man has a talent for management, so you can rely on him to do the work perfectly. 4．I don't know when they got divorced (divorce)． 5．Try to set aside some money each month for future use. Ⅱ.完成句子 1．如果这样的话，你的观点一定会和他的起冲突。 If so, your points of view are_bound_to conflict with his. 2．小时候，她写了很多优秀的诗歌，显示出了文学天赋。 She wrote many excellent poems at an early age, showing_a_talent_for literature. 3．为了身体健康，我们应该留出一些时间锻炼身体。 For the benefit of our health, we should_set_aside_some_time to take exercise. 4．童年的一切一下子涌入我的大脑，仿佛它们刚刚发生似的。 Everything in my childhood crowed upon my mind as_if_they_had_just_happened. 5．汤姆变成了法官，然而他依然是个渔夫。 Tom became a judge while_he_remained_a_fisherman. Ⅲ.完形填空 A library is a place to find out about almost anything. In it there are mostly __1__， but there are also pictures, papers, magazines, maps, records, special science and art shows, films, plays, and contests may also be __2__ in a library. __3__， a library only had books, and these were difficult to get. There were __4__ books that no one was __5__ to take them out of the library. After the printing machine was invented, books could be made __6__ and libraries got more books. To borrow a book to be __7__ home today, a person just needs a library card. The person goes to the main desk to __8__ a library helper check the book out. The helper prints the card with the date by which the book __9__ be returned to the library. If the book is returned __10__， the person must usually __11__ money for having broken the __12__.
课时跟踪检测(三十三) 数 列 求 和 1．已知{a n }是首项为1的等比数列，S n 是{a n }的前n 项和，且9S 3＝S 6，则数列???? ?? 1a n 的 前5项和为( ) A.158或5 B.3116或5 C.3116 D.158 2．已知数列{a n }的前n 项和S n ＝an 2＋bn (a 、b ∈R )，且S 25＝100，则a 12＋a 14等于( ) A ．16 B ．8 C ．4 D ．不确定 3．数列112，314，518，7116，…，(2n －1)＋1 2n ，…的前n 项和S n 的值等于( ) A ．n 2＋1－1 2n B ．2n 2－n ＋1－1 2 n C ．n 2＋1－ 12 n －1 D ．n 2－n ＋1－1 2 n 4．(2019·“江南十校”联考)若数列{a n }为等比数列，且a 1＝1，q ＝2，则T n ＝1a 1a 2＋ 1 a 2a 3 ＋…＋ 1 a n a n ＋1 的结果可化为( ) A ．1－1 4n B ．1－1 2n C.2 3??? ?1－14n D.2 3? ???1－12n 5．(2019·珠海模拟)已知等差数列{a n }的前n 项和为S n ，a 5＝5，S 5＝15，则数列???? ? ?1a n a n ＋1的前100项和为( ) A.100101 B.99101 C.99100 D.101100 6．已知函数f (n )＝????? n 2(当n 为奇数时)， －n 2(当n 为偶数时)， 且a n ＝f (n )＋f (n ＋1)，则a 1＋a 2＋a 3＋…＋a 100 等于( ) A ．0 B ．100 C ．－100 D ．10 200 7．在等差数列{a n }中，S n 表示前n 项和，a 2＋a 8＝18－a 5，则S 9＝________. 8．对于数列{a n }，定义数列{a n ＋1－a n }为数列{a n }的“差数列”，若a 1＝2，{a n }的“差数列”的通项公式为2n ，则数列{a n }的前n 项和S n ＝________.
高中英语学习材料 madeofjingetieji 课时跟踪检测（一） Warming Up & Reading — Language Points Ⅰ.单句语法填空 1．It was in prison that he set down the story. 2．After going through the woods, you’ll find a hospital. 3．The house fell down before she was able to save her little daughter. 4．She joined an English club in order to improve her English. 5．The couple told us it was the fourth time that they had_visited (visit) the West Lake. 6．Before eating, please add some salt to the dish. 7．As far as I’m concerned (concern), it is not a good idea to go camping tonight. 8.While swimming (swim) in the river, we saw a fish jump out of the river. 9．It is no good staying up too late every day. Ⅱ.完成句子 1.He was_very_upset_about_the_fact (为此事很难过) that they couldn’t go to the beach. 2．The teacher made every effort to calm_his_student_down (使他的学生冷静下来) after the exam. 3．I got up early in_order/so_as_not_to_be_late_for_school (为了上学不迟到)． 4．The police went_through_our_luggage (检查了我们的行李) before we got on the plane. 5．A_series_of_wet_days (一连串的雨天) drove me crazy. 6．The time I spend on reading every day adds_up_to_two_hours (合计两个小时)．7．I won’t go there unless_(I_am)_invited (除非受到邀请)． 8．He treated me so badly that I couldn’t_stand_it_any_longer (不能再忍受了)． Ⅲ.阅读理解 A Dear Mr Black， I used to have a really good group of friends. Now they’re all getting into smoking and drinking. I want to find a new group of friends, but I’m shy. How can I know who are the types of people I should make friends with, and who will accept me? Yours， Mike