unit1topic1练习单项选择
( )1.—_____do you prefer, walking or running?
—I prefer running.
A.What
B.How
C.When
D.Which
( )2.—Are you going to ____our English club?
—Yes, I am.
A.take part in
B.join
C.took part in
D.joined
( )3.The foreigners arrived _____ Shanghai _______ night.
A.at; at
B.in; at
C.in; in
D.at; in
( )4. Xu Xia and her teammates are ______ the U.S.A. next week.
A.leaving for
B.leave for
C.to
D.left
( )5.Mr. Xiang is the best teacher in our school. He is good _______ teac hing.
A.for
B.to
C.with
D.at
( )6.I want to be a doctor when I _______.
A.grow up
B. put up
C.get up
D. go up
( )7.I see Wei Han _______ English almost
every morning.
A.reads
B.reading
C.read
D.to read
( )8.-Which team are you going to play _______
the day after tomorrow?
-A team from No.7 Middle School. I hope we
will win.
A.about
B.with
C.for
D.against
( )9.Sam spends two hours _______ his
homework every day.
A.to do
B.doing
C.do
D.does
( )10.There _______ an English Party in our
class next week.
A.is going to
B. going to be
C. is going to be
D. is
( ) 11. I will play in the soccer game. Will you
come and ____?
A. cheer on me
B. cheer up me
C. cheer me on
D. cheer me up
( ) 12. — ____
— Sunyang.
A. What’s your favorite sport?
B. Who’s your favorite player?
C. Are you going to join the swimming team?
D. Do you like Sunyang?
( ) 13.--____ are you going to stay in Japan?
— For two weeks.
A. How long
B. How soon
C. How often
D. When
( ) 14. -- What are you going to ____ when you
grow up?
—I’m going to be a singer.
A. do
B. be
C. is
D. does
( )15.Running is good for our lungs. It can ______ us strong. A. make B.get C.help D.let
( )16. He will _____ Beijing tomorrow morning, if the train isn’t late .
A. go
B. get
C. arrive at
D.arrive in
( )17.He prefers _____ to ______.
A.swim, to skate
B. swims, skating
C.swimming, skating
D.to swim, to skate
( )18.-Do you exercise ____ to keep fit?
–Yes , I do.
A.many
B.much
C.more
D.lots of
有机物的鉴别专题练习题
有机物的鉴别专题 1．下列说确的是 A．乙烯和聚乙烯都可与溴水发生加成反应 B．用酸性KMnO4溶液能鉴别乙烷和乙烯 C．(NH4)2SO4、CuSO4都能使蛋白质变性 D．葡萄糖、蔗糖都能与新制的Cu(OH) 2发生氧化反应 2．下列说确的是（） A．苯和溴水振荡后，由于发生化学反应而使溴水的水层颜色变浅 B．酸性高锰酸钾溶液和溴水都既能鉴别出甲烷和乙烯又能除去甲烷中含有的乙烯再经干燥而获得纯净的甲烷 C．煤中含有苯和甲苯，可以用先干馏，后蒸馏的方法把它们分离出来 D．石油中含有C5～C11的烷烃，可以通过分馏得到汽油 3．下列叙述错误 ．．的是（） A．纤维素的水解实验操作为：把一小团棉花放入试管中，加入几滴90%的硫酸溶液，用玻璃棒把棉花捣成糊状，小火微热，至成亮棕色溶液 B．向油脂发生皂化反应后所得的混合溶液中加入固体NaCl会出现分层现象，此分层过程发生的主要是物理变化 C．只用滴管、试管和水就能鉴别乙二醇、溴代烃、乙醛 D．已知苯与苯酚的沸点差异较大，故一定能用蒸馏的方法分离苯与苯酚的混合液 4．物质的鉴别有多种方法。下列能达到鉴别目的的是( ) ①用水鉴别苯、乙醇、溴苯 ②用相互滴加的方法鉴别Ca(OH)2和NaHCO3溶液 ③点燃鉴别甲烷和乙炔 A．①②B．①③ C．②③ D．①②③ 5．下列有机物的鉴别方法（必要时可加热）不能达到实验目的的是 A．用蒸馏水鉴别乙二醇、甲苯、氯苯 B．用溴水鉴别苯、苯酚、2-己烯 C．用酸性高锰酸钾溶液鉴别苯、甲苯、正己烷 D．用含氢氧化钠的氢氧化铜悬浊液鉴别甲酸、乙醛、乙酸 6．二甲醚和乙醇是同分异构体，其鉴别可采用化学方法及物理方法，下列鉴别方法中不能 ．．对二者进行鉴别的是 A．利用金属钠或者金属钾 B．利用质谱法 C．利用红外光谱法 D．利用核磁共振氢谱 7．下列用水就能鉴别的一组物质是( ) A.苯、己烷、四氯化碳 B.苯、乙醇、四氯化碳 C.硝基苯、乙醇、四氯化碳 D.硝基苯、乙醇、乙酸 8．下列有关实验容的叙述合理的是 A、用湿润的pH试纸测定某盐溶液的pH B、用溴水不能鉴别苯、四氯化碳、乙醇和苯酚
选择题专题训练(17) .doc
选择题专题训练（17） 姓名 班级 学号 1．化学知识广泛应用于生产、生活中，下列相关说法不．正确．．的是（ ） A ．食用松花蛋时蘸些食醋可以去除氨的气味 B ．棉花和木材的主要成分都是纤维素，蚕丝的主要成分是蛋白质 C ．只用淀粉溶液即可检验食盐是否为加碘盐 D ．液氯罐泄漏时，可将其移入水塘中，并向水塘中加入生石灰 2．已知在101kPa 时：CH 4(g)＋2O 2(g)＝CO 2(g)＋2H 2O(g)；△H＝-820kJ/mol 。下列说法中正确的是（ ） A ．反应过程中能量关系可用右图表示 B ．CH 4的燃烧热是820kJ C ．11.2LCH 4完全燃烧放出热量410kJ D ．若将此反应设计成原电池，甲烷在正极被氧化3．用N A 表示阿伏加德罗常数，下列说法不．正确．． 的是（ ） A ．0.2mol 过氧化氢完全分解生成0.1molO 2时转移的电子数目为0.2N A B ．300mL2mol/L 蔗糖溶液中所含分子数为0.6N A C ．在常温常压下，17g 硫化氢气体所含质子数目为9N A D ．在标准状况下，2.24L 二氧化硫与氧气混合气体中所含氧原子数为0.2N A 4．用下列实验装置完成对应的实验（部分仪器已省略），操作正确并能达到实验目的的是 （ ） A ．干燥Cl 2 B ．检验K 2CO 3中的K + C ．石油的蒸馏 D ．吸收NH 3 5．下列有关化学用语的叙述正确的是（ ） A ．硫酸铝水解的化学方程式是：Al 2(SO 4)3＋3H 2O 2Al(OH)3＋3H 2SO 4 B ．铜跟浓硝酸反应的离子方程式是：Cu ＋4NHO 3(浓)＝Cu 2+ ＋2NO 3- ＋2NO 2↑＋2H 2O C ．钢铁发生吸氧腐蚀时，负极发生的电极反应为：2H 2O ＋O 2＋4e -→4OH - D ．氢氧化亚铁在空气中久置变成红褐色的化学方程式为： Cl 2 浓H 2SO 4 NH 3 稀H 2SO 4 C 6H 6 生成物能量总和 反应过程中放出的能量 反应物能量总和 能 量 反应进程
中考英语单项选择题专项训练题附答案
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历年英语专业四级单项选择题真题整理及答案解析
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2020届高三有机选择题专项训练
2020届高三有机选择题专项训练 1.某有机物的结构简式为。下列有关说法错误的是( ) C H O A.该有机物的分子式为 10102 B.该有机物能发生加成反应、取代反应、氧化反应 C.该有机物分子中所有碳原子可能共平面 D.该有机物能使酸性高锰酸钾溶液和溴水褪色,其褪色原理相同 2.乌头酸的结构简式如图所示，下列关于乌头酸的说法错误的是（） C H O A.乌头酸的分子式为 666 B.乌头酸能发生水解反应和加成反应 C.乌头酸能使酸性高锰酸钾溶液褪色 D.含1mol乌头酸的溶液最多可消耗3mol NaOH 3.2018年世界环境日主题是”塑战速决”,呼吁世界各国齐心协力对抗一次性塑料污染问题。下列关于塑料的认识不正确的是( ) A.用于制造水杯、奶瓶等的聚乙烯可通过乙烯的加聚反应制得 B.用于制造玩具、泡沫塑料的聚苯乙烯的单体是苯乙烯 C.聚氯乙烯在建筑材料、人造革、食品包装膜等方面均有广泛应用 D.开发可降解塑料来替代聚乙烯、聚氯乙烯、聚苯乙烯等可减缓“白色污染”
4.环之间共用一个碳原子的化合物称为螺环化合物。1，4-二氧杂螺[2.2]丙烷的结构简式为。 下列说法正确的是（） A.1mol该有机物完全燃烧需要4mol O 2 B.该有机物与 HCOOCH=CH互为同分异构体 2 C.该有机物的二氯代物有3种 D.该有机物所有原子均处于同一平面 5.美国化学家C.J. Pedersen由于发现了冠醚而获得诺贝尔奖。这类醚因形似“王冠”而被称为冠醚，如：（1) ； (2) 。下列关于冠醚的说法正确的是（） A.冠醚属于烃类 B.(2)与葡萄糖互为同分异构体 C.(1)和(2)中均既含极性键又含非极性键 D.(1)和(2)互为同系物 6.Weiss利用光敏剂QD制备2—环己基苯乙烯(c)的过程如图所示。下列有关说法正确的是( ) A．a不能使酸性KMnO4溶液褪色 B．a、b、c都能发生加成、加聚反应
高考英语单项选择专题训练精品题(16)及答案[ 高考]
2014高考英语单项选择专题训练精品题（16）及答案 【湖南省怀化市2014高考英语3月一模试 Section A (15 marks)（单项选择） Directions: Beneath each of the following sentences there are four choices marked A, B, C and D. Choose the one answer that best completes the sentence. 21. He is of confidence, , in my opinion, is most important in society. A. how B. that C. what D. which 22. — Tom! I forgot to bring my notebook this morning. —Don’t worry! I it for you. A. will get B. gets C. am getting D. am going to get 23. Microblogs experienced rapid growth in 2013 in China, with its operators, users and visitors several times. A. increase B. increased C. increasing D. to increase 24. Look at the timetable. Hurry up! Flight 9013 to Changsha off at 7:30. A. took B. takes C. will be taken D. has taken 25. Keep yourself open we can experience the great joy that friendship can bring. A. as if B. so that C. even though D. ever since 26. We used to mistake that heavy objects fell faster than light . A. the ones B. those C. ones D. these 27. By the end of last week, nearly 80 percent of the work . A. have finished B. had been finished C. will be finished D. was finished 28. Focused on your heart asks you to do, you’ll realize your dream one day. A. that B. which C. what D. it 29. Lady Gaga has put off her concerts because of the difficulties by the ongoing strikes. A. caused B. causing C. to be caused D. having caused 30. Cindy, to be here at 8 o’clock. A. is sure B. is sure that C. will be sure D. be sure 31. necessary experience for my future career, I take an active part in social activities in college. A. To gain B. Gain C. Gaining D. Having gained 32. You get two tickets of Despicable Me Ⅱ, as I have promised . A. may B. can C. need D. shall 33. A recent survey shows that the number of children who from the countryside with their
(完整版)英语专四单项选择题库
定语从句 1．It rained hard yesterday, prevented me from going to the park. A. that B. which C. as D. it →the diagram shows, the sum spent on tobacco is nearly as large as that spent on alcohol. A. As B. Which C. What D. Like ２. He is quite worn out from years of hard work. He is not the man he was twenty years ago. A. which B. that C. who D. whom 3. Chinese customs police wondered if there were some underground passages the cocaine had been smuggled into China from Myanmar. A. through which B. in which C. through that D. in that 4. The temperature Fahrenheit and Celsius thermometer readings are equal is 40 degrees. A. by which B. for which C. to which D. at which 5. There was a storm I had never experienced before. A. such as B. as which C. with which D. for such 6. The residents, had been damaged by the earthquake, were given help by the government. A. all their homes B. all whose homes C. all of whose homes D. all of their homes 7. The course normally attracts 30 students per year, up to half will from overseas. A. in which B. for whom C. with which D. of whom 8. Perhaps ther e’only one thing on which the citizens of Atlanta do agree: there’s only a city will not look the same or be the same after this summer. A. that B. which C. as D. where 9. The team can handle whatever . A. that needs handling B. which need handling C. it needs handling D. needs to be handled 10. The physician has made a discovery, of great importance to the progress of science and technology.
2020高考化学二轮复习第Ⅰ部分选择题专项练一选择题精准练选择题精准练(三)常见有机物的结构和性质
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