例1、 设{}2|8150A x x x =-+=，{}|10B x ax =-=，若A B B =，求实数a 组成的集合的子集有多少个？
【练1】已知集合
{}2|40A x x x =+=、(){}22|2110B x x a x a =+++-=，若B A ?，则实数a 的取值范围是 。
例2、 已知()2
2214
y x ++=,求22x y +的取值范围 【练2】若动点（x,y ）在曲线22
214x y b
+=()0b >上变化，则22x y +的最大值为（） （A ）()()2404424b b b b ?+<
402422b b b b ?+<
（C ）244b +（D ）2b 例3、 ()2112
x x a f x ?-=+是R 上的奇函数，（1）求a 的值（2）求的反函数()1f x - 【练3】函数
(
)()11f x x =≥的反函数是（） A 、
()2221y x x x =-+< B 、()2221y x x x =-+≥ C 、()221y x x x =-< D 、()221y x x x =-≥
例4、已知函数
()121x f x x -=+，函数()y g x =的图像与()11y f x -=-的图象关于直线y x =对称，则()y g x =的解析式为（）
A 、()32x
g x x -= B 、()21x g x x -=+ C 、()12x g x x -=+ D 、()32g x x
=+ 【练4】已知函数y=log 2x 的反函数是y=f -1(x)，则函数y= f -1(1-x)的图象是（）
例5、 判断函数()
2lg 1()22x f x x -=--的奇偶性。
①(
)f x =+()(
1f x x =-()1sin cos 1sin cos x x f x x x
++=+- 【练5】判断下列函数的奇偶性：
例6、 函数()2221211log 22x x f x x x -+??=<-> ???
或的反函数为()1f x -，证明()1f x -是奇函数且在其定义域上是增函数。 【练6】（1）已知()2x x e e f x --= ，则如下结论正确的是（）
A 、 ()f x 是奇函数且为增函数
B 、()f x 是奇函数且为减函数
C 、 ()f x 是偶函数且为增函数
D 、 ()f x 是偶函数且为减函数
例7、试判断函数()()0,0b f x ax a b x
=+>>的单调性。 【练7】（1）
()()10x f x ax a ax -=+>（1）用单调性的定义判断函数()f x 在()0,+∞上的单调性。（2）设()f x 在01x <≤的最小值为()g a ，求()y g a =的解析式。
例7、 已知函数()3231f x ax x x =+-+上是减函数，求a 的取值范围。
【练8】（1）函数
2y x bx c =++()()0,x ∈+∞是是单调函数的充要条件是（） A 、0b ≥ B 、0b ≤ C 、0b > D 、0b <
（2）是否存在这样的K 值，使函数()243221232
f x k x x kx x =--++在()1,2上递减，在()2,+∞上递增？ 例9 甲、乙两地相距s km , 汽车从甲地匀速行驶到乙地，速度不得超过c km/h ,已知汽车每小时的运输成本（以元为单位）由可变部分和固定部分组成：可变部分与速度v （km/h ）的平方成正比，比例系数为b;固定部分为a 元。
（1） 把全程运输成本y （元）表示为速度v （km/h ）的函数，并指出这个函数的定义域；
（2） 为了使全程运输成本最小，汽车应以多大速度行驶？
例10、是否存在实数a 使函数()2log ax x a f x -=在[]2,4上是增函数？若存在求出a 的值，若不存在，说明理由。
【练10】（1）（黄岗三月分统考变式题）设0a
>，且1a ≠试求函数2log 43a y x x =+-的的单调区间。 （2）若函数()()()3log 0,1a f x x ax a a =->≠在区间1(,0)2
-内单调递增，则a 的取值范围是（） A 、1[,1)4 B 、3[,1)4 C 、9(,)4+∞ D 、9(1,)4
例11、已知1sin sin 3
x y +=求2sin cos y x -的最大值 【练11】（1）不等式x >ax ＋
32的解集是(4,b)，则a ＝________，b ＝_______。 例12、数列{}n a 前n 项和n s 且1111,3
n n a a s +==。（1）求234,,a a a 的值及数列{}n a 的通项公式。 【练12】已知数列
{}n a 满足()()112311,2312n n a a a a a n a n -==++++-≥则数列{}n a 的通项为 。 例13、等差数列
{}n a 的首项10a >，前n 项和n s ，当l m ≠时，m l s s =。问n 为何值时n s 最大? 【练13】设
{}n a 是等差数列，n s 是前n 项和，且56s s <，678s s s =>，则下列结论错误的是（） A 、0d D 、6s 和7s 均为n s 的最大值。
例14、已知关于的方程230x x a -+=和230x x b -+=的四个根组成首项为
34
的等差数列，求a b +的值。 【练14】已知方程220x x m -+=和220x x n -+=的四个根组成一个首项为14的等差数列，则m n -=（）
一、高中图文转换专题训练 1．下面是“北斗卫星导航系统”标识，请仔细观察标识，理解标识要素的内涵，填写下面介绍词中的空缺部分，每空不多于6个字。 北斗卫星导航系统标识由正圆形、写意的司南、①________、北斗星等主要元素组成，充满了浓厚的②________气息。北斗星自古是人们用来辨识方位的依据，司南是我国古代发明的③________的仪器，两者结合彰显了中国古代的④________成就。该标识象征着卫星导航系统星地一体，为人们提供⑤________服务，同时还蕴含着我国卫星导航系统的名字——“北斗”。网格化地球和中英文文字彰显了北斗卫星导航系统⑥________的宗旨。【答案】太极阴阳鱼；中国传统文化；辨别方向；科学技术；定位导航；服务全球 【解析】【分析】本题是“北斗卫星导航系统”标识图，请仔细观察标识，理解标识要素的内涵，根据语境填写介绍词中的空缺部分即可。 故答案为：太极阴阳鱼；中国传统文化；辨别方向；科学技术；定位导航；服务全球 【点评】本题考查学生图文转换和补写句子的能力。图文转换，要求考生将图表中的信息转换成语言文字信息，但一般不需要也不允许我们进行想象甚至虚构。这类题答题思路是：先看标题，再看图示，不放过图示中的文字，然后概括答题。补写句子需要学生阅读全文，在了解文章大意的基础上，根据上下文的内容和句式填写合适的句子，使之形成一个整体。 2．下面是电子商务新模式——O2O运作模式图(O2O即Online To Offline，即将线下商务的机会与互联结合在了一起，让互联成为线下交易的前台)，请把这个运作模式图写成一段话，要求内容完整，表述准确，语言连贯，不超过75个字。
高考英语易错题解题方法大全：单项选择上 【示例1】_____ Jinan you see today is quite _____ different city from what it used to be. A. The, 不填 B. 不填, a C. The, a D. A. a 【错解分析】典型错误B.错因分析:以为专有名称前不用冠词而误选B。 【解题指导】第一个空后有定语从句修饰特指今天的上海市，用the ; 是一座不同于过去的城市，所以第二个空应该用不定冠词。 【答案】本题的正确选项为C. 【练习1】—Has the little girl passed ______ P.E. test? —She has tried twice, and the teacher will allow her to have _____ third try. A. the; 不填 B. a; the C. the; a D. the; the 【错解分析】由于没有掌握序数词前用不定冠词表示“又一次，在一次”的意思而误选D。【解题指导】本题考查序数词前用不定冠词的用法.第一空特指体育测试，用定冠词；她尽管两次都未通过，但教师允许她再考一次.a+序数词表示“又.再”，故选C. 【答案】C 【示例2】His speech was hard to understand because he kept jumping from one topic to _____. A. other B. the other C. the others D. another 【错解分析】典型错误B.错因分析：选择依据可能是one … the other …这一常用结构 【解题指导】使用one … the other … 时，我们通常是针对两者而言的，即指“两者中的一个……，另一个……”；如果所谈论的情况不是针对两者而言的，而是针对多者而言的，那么我们就不宜在one 后使用the other，而考虑用another。 【答案】本题的正确选项为D. 【练习2】It’s sometimes difficult to tell one twin from _____. A. another B. some other C. other D. the other 【错解分析】误选A原因是以为另一个应该用another。 【解题指导】twin 意为“孪生子之一”、“双胞胎之一”，即指两者之一，故用one … the other … 这一结构 【答案】D 【示例3】10. “He is said to be a wise leader.” “Oh, no, he is _____ but a wise leader.” A. anything B. anyone C. anybody D. anywhere
中考英语精选单选题易错题100题 1、What do you think ______solve the problem ? A、 you can do B、 can you do C、 you can do to D、 can you do to 2、 In the past he often made his sister____, but now he is often made ___by his sister、 A、 to cry; to cry B、 cry; cry C、to cry; cry D、 cry; to cry 3、 The teacher told us that the sun ____in the east、 A、 rises B、 rose C、 raises D、 raised 4、He lives in a village _____there are a lot of trees、 A、 there
C、 that D、 which 5、 He _________ Alice for ten years、 A 、married to B、 has married to C、 has married D、 has been married to 6、 We need fifteen more people _____our team to do the job、 A、 but B、 except C、 as well D、 besides 7、They won’t allow us ________ at this beach、 A、 swimming B、 to swim C、 swam D、 swim8 、Is this factory ______you visited last week? A、 that B、 where
高考冠词易错题汇总 一、单项选择冠词 1． She is ____ honest girl, and she never tells lies. A．a B．an C．/ D．the 【答案】B 【解析】 试题分析：考查冠词。元音开头的此前用an表示“一”；辅音开头的此前用“a”表示“一”。故选B。 考点：考查冠词 2．----- Do you go to ______ church every Sunday? ----- Yes. I believe _______God blesses me all _____ time. A．the;/; the B．/ ; /; / C．a; /; the D．/; /; the 【答案】D 【解析】 考查冠词，第一空不填，表示go to church“去教堂”，第二空不填，上帝前面不加冠词，第三空填the，all the time“一直”，句意是：|你每个星期天做礼拜吗？|是的，我相信上帝会一直保佑我的。选D。 3．I often have conversation with John over _____ phone, but keep in touch with Tom by writing _____ letters. A．/; the B．/; a C．the; / D．the; a 【答案】C 【解析】 考查冠词。第一空为固定短语：通过电话over the phone，第二空：写信write letters，letters前不需要加冠词，所以选C。 4．One way to understand thousands of new words is to gain _____ good knowledge of basic word information. A．不填B．a C．the D．one 【答案】B 【解析】 试题分析:理解成千上万个新单词的一种途径就是好好掌握基本单词。此处为固定短语gain a good knowledge of：精通，故选B。 考点：考察冠词。 5．As he reached _____ back door, Jack saw _____ strange sight. A．the ; / B．a; the C．/; a D．the ; a
高考英语单选易错题汇编及答案全部详解 1. Stop making so much noise ____ the neighbor will start complaining. A. or else B. but still C. and then D. so that 2. We hope to go to the beach tomorrow, but we won't go ____ it's raining. A. if B. when C. though D. because 3. ——The weather is too cold ____ March this year. ——It was still ____ when I came here years ago. A. for; colder B. in; cold C. in; hot D. for; hotter 4. ——How much vinegar did you put in the soup? ——I'm sorry to say, ____. I forget. A. no B. no one C. nothing D. none 5. He is only too ready to help others, seldom, ____, refusing them when they turn to him. A. if never B. if ever C. if not D. if any 6. ——What should I wear to attend his wedding party? ——Dress ____ you like. A. what B. however C. whatever D. how 7. ——The research on the new bird flu virus vaccine is challenging and demanding. Who do you think can do the job? ——____ my students have a try? A. Shall B. Must C. Will D. May 8. I'd like to live somewhere ____ the sun shines all year long. A. which B. that C. where D. in which 9. I ____ to go for a walk, but someone called and I couldn't get away. A. was planning B. planned C. had planned D. would plan 10. ——Your book, Tommy? ——No, Mom, it's my friend's. ——Remember to return it to ____ name is on it. A. what B. which C. whose D. whosever 11. Thank you for sending us ____ fresh vegetables of many kinds. You have done us ____ a
［易错题1］ 王叔叔家养了350只鸡，每个笼子里装30只，需要准备多少个这样的笼子？ 【错误解答】350÷30=11（个）……20（只） 答：需要准备11个这样的笼子。 【“病因”分析】这里出错的原因是把余下的20只鸡忽略了，余下的20只鸡需要再装一个笼子，这里应该准备12个笼子。 【正确解答】350÷30=11（个）……20（只） 11+1=12（个） 答：需要准备12个这样的笼子。 ［易错题2］ 小红、小林和小刚，一个星期一共练了630个大字，平均每人每天练多少个大字？ 【错误解答】630÷3=210（个） 答：平均每人每天练210个大字。 【“病因”分析】这里出错是把一个星期是7天这个隐含的条件忽略了。 【正确解答】630÷3÷7=210÷7=30（个） 答：平均每人每天练30个大字。 ［易错题3］ 计算（842＋421＋421）×25，下面最简便的方法是（）。 A.421×（4×25 ） B.842×（2×25 ） C.842×25＋421×25＋421×25 【错因分析】首先要明白（842＋421＋421）×25有多种简便计算方法，一个可以把421合并成842，另一个也可以把842拆分成421，而此题要求是最简便的方法，那么有的同学只想到简便没看清“最”简便就想当然选择B了。 【思路点睛】正确答案选择A，因为此题要求最简便。通过把842拆分成2个421，和题中已有的2个421合并成4个421，再根据乘法结合律把4和25先乘起来得100，这样就是最简便的方法了。B比起原题死算确实简便，但比起A来没有A更好算最简便。 ［易错题4］
简便计算(100+2) ×45。 【错因分析】典型错误(100+2) ×45 =100×45+2 =4500+2 =4502 × 出现这种错误是由于学生对什么是乘法分配律本质内涵认识和理解不够。什么是乘法分配律？书上结论是这样陈述的：两个数的和与其中一个数相乘，可以先把这两个数分别与这个数相乘，再相加。也就是说不能只乘其中一个加数。上述案例中就只乘其中100这个加数，而另一个加数2就漏乘45了，导致出错。 【思路点睛】我们依据乘法分配律，把100和2这两个加数分别与45相乘，最后再把两个乘得的数相加。正确过程如下： (100+2) ×45 =100×45+45×2 =4500+90 =4590 ［易错题5］ 简便计算68×99。 【错因分析】 68×99 =68×(100+1) =68×100+68 =6800+68 =6868 × 该同学看到99想到100，把99先看作最接近的100这很好，但是忽略了简便计算的前提是等量代换，一个量须用与它相等的量去代替，才可以依次继续递等下去。把99替换成（100+1）这本身就建立在不公平基础上，所以不能向下递等，结果也不对等。 【思路点睛】两个数相乘，如果有一个数接近整百数，可以先将这个数转化成整百数加或减一个数的形式，再应用乘法分配律进行计算。正确过程如下： 68×99 =68×(100-1) =68×100-68 =6800-68 =6732
中考英语单选各种难题易错题 A. What fine weather B. What a fine weather C. How a fine weather D. How fine a weather 解析：选A. 此题容易误选B. weather是不可数名词，前面不能有不定冠词。英语中经常考查的不可数名词有work, news, adivice, information等。 ( ) 2. Which is the way to the __________? A. shoe factory B. shoes factory C. shoe’s factory D. shoes’ factory 解析：选A. 此题极易误选B, C, D. 英语中名词单数可以修饰名词，如： an apple tree →two apple trees. 但注意 a man teacher→two men teachers。 ( ) 3. This class ________ now. Miss Gao teaches them。 A. are studying B. is studying C. be studying D. studying 解析：选A. 此题容易误选B. class, family, team等单词如果表示整体谓语就用单数，表示个体就用复数，从语境及其后面的代词them可以看出，class表示个体，故选择A。 ( ) 4. We will have a _________ holiday after the exam。 A. two month B. two-month C. two month’s D. two-months 解析：选择B 此题容易误选C, D. 在英语中数词中间用连字符号加名词单数，构成符合名词，在句中只能作定语，如果选择C, 需要把逗号放s后面。 ( ) 5. There is no enough ________ on the corner to put the table。 A. place B. room C. floor D. ground 解析：选B. 此题最容易误选A.。 room在句中是空间而非房间。句意：角落里没有摆桌子的空间了。 ( ) 6. We can have _____ blue sky if we create _____ less polluted world。(苏州2010) A. a; a B. a; the C. the; a D. the; the 解析：选A. 此题容易误选C, D. 根据句意：如果我们创造一个没有污染的世界，那么我们就用一个蓝色的天空。
化学易错题集锦 选择题（每小题只有1个选项符合题意。） 1．已知Co2O3在酸性溶液中易被还原成Co2+，Co2O3、Cl2、FeCl3、I2的氧化性依次减弱。 下列反应在水溶液中不可能发生的是 A．3Cl2＋6FeI2＝2FeCl3＋4FeI3B．Cl2＋FeI2＝FeCl2＋I2 C．Co2O3＋6HCl＝2CoCl2＋Cl2↑＋3H2O D．2Fe3+＋2I-＝2Fe2+＋I2 2．Cu2S与一定浓度的HNO3反应，生成Cu(NO3)2、CuSO4、NO2、NO和H2O，当NO2和NO的物质的量为1∶1时，实际参加反应的Cu2S与HNO3的物质的量之比为 A．1∶7 B．1∶9 C．1∶5 D．2∶9 3．将40g铜与200mL一定浓度的硝酸反应，铜完全溶解产生的NO和NO2混合气体在标准状况下的体积为11.2L。请回答： （1）NO的体积为L，NO2的体积为L。 （2）待产生的气体全部释放后，向溶液加入VmL a mol/L的NaOH溶液，恰好使溶液中的Cu2＋全部转化成沉淀，则原硝酸溶液的浓度为mol/L。 （3）欲使铜与硝酸反应生成的气体在NaOH溶液中全部转化为NaNO3， 至少需要30%的双氧水 g。 4．某溶液既能溶解Al(OH)3，又能溶解H2SiO3，在该溶液中可以大量共存的是离子组是A．K+、Na+、HCO3－、NO3－B．Na+、SO42－、Cl-、ClO- C．H+、Mg2+、SO42－、NO3－D．Ag+、K+、NO3－、Na+ 5．下列离子方程式书写正确的是 A．过量的SO2通入NaOH溶液中：SO2+2OH－＝SO32－+H2O B．Fe(NO3)3溶液中加入过量的HI溶液：2Fe3＋+2I－＝2Fe2＋+I2 C．NaNO2溶液中加入酸性KMnO4溶液：2MnO4－+5NO2－+6H＋＝2Mn2＋+5NO3－+3H2O D．NaHCO3溶液中加入过量的Ba(OH)2溶液： 2HCO3－+Ba2＋+2OH－＝BaCO3↓+2H2O+CO32－ 6．已知1 g氢气完全燃烧生成水蒸气时放出热量121 kJ，且氧气中1 mol 的O＝O键完全断裂时吸收热量496 kJ，水蒸气中1mol H－O键形成时放出热量463 kJ，则氢气中1mol H－H键断裂时吸收热量为 A．920 kJ B．557 kJ C．436 kJ D．188 kJ 7．阿伏加德罗常数约为6.02×1023mol－1，下列叙述正确的是 A．2.24LCO2中含有的原子数为0.3 ×6.02×1023 B．0.1L3 mol·L－1的NH4NO3溶液中含有的NH4＋数目为0.3 ×6.02×1023 C．5.6g铁粉与硝酸反应失去的电子数一定为0.3 ×6.02×1023 D．4.5gSiO2晶体中含有的硅氧键数目为0.3 ×6.02×1023 8．阿伏加德罗常数约为6.02×1023 mol-1，下列叙述中不正确的是 A．室温下，42.0 g乙烯和丙烯的混合气体中含有的碳原子数约为3×6.02×1023 B．标准状况下，a L甲烷和乙烷混合气体中的分子数约为a/22.4×6.02×1023 C．常温常压下，18.0 g重水（D2O）所含的电子数约为10×6.02×1023
高考单选易错题、难题、好题档案 1. By the time you arrive in London, we _____ in Europe for two weeks. A. shall stay B. have stayed C. will have stayed D. have been staying 2. I appreciated ____ the opportunity to study abroad two years ago. A. having been given B. having given C. to have been given D. to have given 3. Living in the central Australian desert has its problems, _____ obtaining water is not the least. A. of which B. for what C. as D. whose 4. The heart is ____ intelligent than the stomach, for they are both controlled by the brain. A. not so B. not much C. much more d. no more 5. _____ the fact that his initial(开始的)experiments had failed, Pro. White persisted (坚持) in his research. A. Because of B. As to C. In spite of D. In views of 6. The millions of calculations(计算) involved, had they been don't by hand, _____ all practical value by the time they were finished. A. could lose B. would have lost C. might lose D. ought to have lost 7. No bread eaten by man is so sweet as _____ earned by his own labour. A. one B. that C. such D. what 8. It isn't cold enough for there _____ a frost tonight, so I can leave Jim's car out quite safely. A. would be B. being C. was D. to be 9. Tom assured (向……保证) his boss that he would _____ all his energies in doing this new job. A. call forth B. call at C. call on D. call off 10. More than two hundred years ago the United States _____ from the British Empire and became an independent country. A. got off B. pulled down C. broke away D. dropped off 11. As your instructor(教师) advised, you ought to spend your time on something ____ researching into. A. precious B. worth C. worthy D. valuable 12. Without the friction (摩擦力) between feet and the ground, people would ____ be able to walk. A. in no time B. by all means C. in no way D. on any account 13. We are taught that a business letter should be written in a formal style _____ in a personal one. A. rather than B. other than C. better than D. less than 14. ______ is generally accepted, economical growth is determined by the smooth development of production. A. What B. That C. It D. As 15. John complained to the bookseller that there were several pages ____ in the dictionary. A. missing B. losing C. dropping D. leaking 16. Do you enjoy listening to records? I find records are often ____ or better than an actual performance.
一、填空 1、连接梯形各边的中点围成新的图形是（） 2、一个三角形两条边是5厘米和三厘米，第三条边的长度可能是（） 3、电动伸缩门是利用平行四边形的（）性设计的。 4、等边三角形是特殊的（）。 5、44×25＝（11×4）×25=11×（4×25），这是根据（）。 6、1100÷125÷8＝11000÷（125×8）运用了（） 7、一个立体图形，从正面看是）个小正方体。 8、用一根铁丝围成一个边长18厘米的正方形，那么用这个铁丝围成一个正三角形，边长是（）厘米。 9、王大伯家的三角形菜地的两条边分别是5米和8米这个三角形菜地的第三条边可能是（）米 10、有三种长度的小棒（长度分别是3cm、5cm、8cm）若干根，可以摆成（）种不同的三角形 11、十分位上的“3”与十位上的“3”相差（） 12、在0.08、0.080、0.008这三个小数中，计数单位相同，但大小不相等的两个数是（）、（） 13、把6改成以百分之一为计数单位的数是（） 14、将一根15厘米的木棒截成三根整厘米的小棒来围成三角形，最长的一根小棒不能超过（）
厘米 15、5吨50千克=（）吨 1.2平方厘米=（）平方分米 4.1公顷=（）平方米 16、直角三角形的三条边分别是6厘米、8厘米、10厘米，这个直角三角形相互垂直的两条边分别是（）（） 17、观察1、2、3、6、12、23、44、X、164的规律，可知X= （） 18、如果12=1×1,22=2×2，32=3×3.....252=25×25，且12+22+....252=5525，那么32+62+...+752=9×5525= 19、近似数是1.0，这个两位小数最小是（），最大是（）。 20、甲、乙两数的和是264，把甲数的小数点向左移动一位，则两数相等。甲数（）乙数（）。 21、两个一样的三角形可以拼成（）。两个一样的直角三角形可以拼成（）（）（）。两个一样的等腰直角三角形可以拼成（）（）（）。 22、等腰三角形的底角是顶角的2倍，顶角是（）。 23、有3厘米、4厘米、5厘米、7厘米四根小棒，从中选3根搭成一个三角形，有（）种不同的选法。 24、在一条长90米的小路两旁种树，如果两端都种，每相邻两棵树之间的距离是10米，可以种（）棵。 25、要在五边形的水池边上摆上花盆，使每一边都有4盆，最少需要（）盆。
英语单选易错题(二) 1.I’d like to live somewhere ____ the sun shines all year long. A. which B. that C. where D. in which 2.I ______ to go for a walk, but someone called and I couldn’t get away. A. was planning B. planned C. had planned D. would plan 3. —Did you go to Qingdao for vacation last summer? —I_________ to go, but I got sick at the last minute. A. planned B. was planning C. had been planning D. have planned 4.—We are informed that the Weifang International Kite Festival starts at 7:00. —Oh, I didn’t expect it was so early! I ______ to go out for dinner with my friends first. A. was planning B. am planning C. have been planning D. have planned 5. —I didn’t do well in the exam. What about you? — I did _____ you. Maybe even worse. A. not better than B. not worse than C. as well as D. no better than 6. If you _____ the medicine you _____ better now. A. took ; would feel B. had taken ; felt C. had taken ; would feel D. took ;would have felt 7. —Your book, Tommy? —No, Mom, it’s my friend’s. —Remember to return it to ____ name is on it. A. what B. which C. whose D. whosever 8. — I hope you enjoyed the film last night. — How on earth do you know I went to a film? I _____ you. A. won’t tell B. didn’t tell C. haven’t told D. hadn’t told 9. Gone forever ____ when we used foreign oil. A. the days are B. the days were C. are the days D. were the days 10. They waited and waited. _____ they had been looking forward to. A. Then the hour came B. The hour then came C. Then came the hour D. Then did the hour come 11. He must have finished the work by the end of last month, ___________? A. hasn’t he B. didn’t he C. hadn’t he D. mustn’t he 12. Be careful with such things. If you _____, you’ll drop them. A. don’t B. aren’t C. won’t D. do 13. ___________ a fine day, Shenzhou VI will be launched on time according to its planned time. A. Being B. It being C. To be D. It is 14. It will be five years ______ we meet again. A. since B. after C. before D. when 15. — Did you scold him for his mistake? — Yes, but _____ it. A. I’d rather not do B. I’d better not do C. I’d rather not have done D. I’d better have not done 12. We Chinese can work wonders, that is, we can make ____. A. impossible possible B. the impossible possible C. impossibly possible D. the impossible possibly 13. Whether we’ll hold the sports meet depends on the weather, _____?
1. Ten years had passed. I found she had _______. A. a few white hairs B. a little white hair C. some white hair D. more fifty hair 2. —Hi, this way, please. —OK.I sometimes have no sense of ______ when I arrive at the crossroad. A. position B. direction C. situation D. condition 3. —I’ve got an “A” in the examination. —That’s a good ______. You will surely win a second. A. result B. news C. start D. idea 4. I didn’t have to work all weekend — I did it by _______. A. chance B. choice C. accident D. myself 5. “Did you get _____ to the party?” “Yes, I replied to it this morning.” A. an answer B. an invitation C. a question D. a letter 6. I paid him ￡50 for the painting, but its true ______ must be at least ￡500. A. price B. money C. value D. importance 7. His letter was so confusing that I could hardly make any ______ of it. A. explanation B. meaning C. sense D. guess 8. You’ve just missed your ______, and you will have to wait for the next round. A. chance B. turn C. time D. part 9. —Li Lin is very bright and studies hard as well. —It’s no ______ he always gets the first place in any examination. A. question B. doubt C. problem D. wonder 10. —How can I use this washing machine? —Well, just refer to the _______. A. explanations B. expressions C. introductions D. directions 11. Jim was late for two classes this morning. He said that he forgot both of the ______. A. rooms number B. room number C. room’s numbers D. room numbers 12. —Hello, I’d like to speak to Henry. —Oh, which _______? There are two ______ in our office. A. Henrys, Henrys B. Henries, Henries C. Henry, Henrys D. Henrys, Henries 13. Electricity, like other forms of ______, has greatly increased in price in recent years. A. pressure B. force C. strength D. energy 14. To most of us, friendships are considered very important, but we need to have clear in our _________ the kinds of friendships we want. A. hearts B thought C. actions D. minds 15. The result was a narrow victory for Smith in the competition. A. achievements B success C. victory D. triumph 16. As a candidate, you must make a good ______on everyone you meet if you want to win the election. A decision B situation C impression D position 17.—Jerry said something strange at the meeting．
2019高考英语：单选易错题练习题（1）及解析详解 1、Stopmakingsomuchnoise____theneighborwillstartcomplaining. A、orelse B、butstill C、andthen D、sothat 2、Wehopetogotothebeachtomorrow,butwewon’tgo____it’sraining. A、if B、when C、though D、because 3、——Theweatheristoocold____Marchthisyear. ——Itwasstill____whenIcamehereyearsago. A、for;colder B、in;cold C、in;hot D、for;hotter 4、——Howmuchvinegardidyouputinthesoup? ——I’msorrytosay,____.Iforget. A、no B、noone C、nothing D、none 5、Heisonlytooreadytohelpothers,seldom,____,refusingthemwhentheyturntohim. A、ifnever B、ifever C、ifnot D、ifany 6、——WhatshouldIweartoattendhisweddingparty? ——Dress____youlike. A、what B、however C、whatever D、how 7、——Theresearchonthenewbirdfluvirusvaccineischallenginganddemanding.Whodoyouthinkca ndothejob? ——____mystudentshaveatry? A、Shall B、Must C、Will D、May 8、I’dliketolivesomewhere____thesunshinesallyearlong. A、which B、that C、where D、inwhich 9、I____togoforawalk,butsomeonecalledandIcouldn’tgetaway. A、wasplanning B、planned C、hadplanned D、wouldplan 10、——Yourbook,Tommy? ——No,Mom,it’smyfriend’s. ——Remembertoreturnitto____nameisonit. A、what B、which C、whose D、whosever 11、Thankyouforsendingus____freshvegetablesofmanykinds.Youhavedoneus____agreatservi ce. A、不填；a B、the；a C、不填；不填 D、the；不填 12、Nowthatwe____allthemoney,it’snouseturningonmeandsayingit’sallmyfault. A、hadlost B、lost C、havelost D、lose 13、Wehadareallybadtimeaboutsixmonthsagobutnowthingsare____. A、lookingup B、comingup C、makingup D、turningup 14、——Whendiditbegintosnow? ——Itstarted____thenight. A、during B、by C、from D、at 15、Youngasheis,Davidhasgained____richexperiencein____society. A、the;the B、a;不填 C、不填；不填 D、不填；the 16、