4.Before you mail this letter,you shoule check again whether you have it or not.

　　a)sunk(使沉没) b)sighed(叹息) c)sought(寻找; 探寻) d)sealed(密封的)

　　第二单元第5个

　　5单元第7个14个

　　6单元第9个

　　13. They told me that by the end of the month they ___ in this house for 10 years.

　　A)has lived B)has been living C)will have lived D) would have been living.

　　答案 D 他们告诉我，到本月底，他们就在这所房子里住了10年了。

　　14. By the time he retires John ____ here for 30 years.

　　A)has taught B)has been teaching C)will have been teaching D)has been taught

　　答案 C 他退休的时候约翰已经教了30年了。

　　10.Chocolate and ice-cream have different _____.

　　A)favor B)favorites C)fever D)flavors

　　答案：flavors 巧克力和冰淇淋的味道不同。

　　U5.15. After __the old man, the doctor suggested that he __ a bad cold. C

　　A. examining, should catch B. examined, had caught

　　C. examining, had caught D. examined, catch

　　检查过后，医生暗示他得了重感冒。

　　u6.19.You __ come over yourself. You could have given me a ring instead.

　　A)needn’t have B)shouldn’t have C)can’t have D)mustn’t have

　　答案：A 你其实不用这么为难自己，你其实可以送我一个戒指(事实上没有送)

　　U7.2. Professor smith is also the ____ of the international program office. If you have any problem when you study here, you may go to him for help

　　A) detective(detective) B) president(总统;国家主席) C)manager(经理) D)director(主管)

　　答案：D 史密斯教授也是国际项目办公室的主管，如果你在这里学习上有任何的问题，你可以去找他帮忙。

　　U9.1. More than two hundred years ago the United States ( D )from the British Empire and became an independent country.

　　A. got off(下车) B. pulled down(放下) C. dropped off(减少) D. broke away(逃脱)

　　两百多年前美国脱离了大英帝国成为一个独立自主的国家。

　　u16.12.---What are you doing here?

　　---Oh,my teacher asked me to write a passage about in English.

　　---You can write a passage in English?

　　A)600 words,600-words B) 600-word,600-words

　　C) 600 words,600-word D) 600 words,600-words

　　18. the only thing ( C )can be done is to stop them from going there.

　　A. which B. what C. that D. who

　　唯一要完成的事就是阻止他们去那里。

　　U15.1 She likes the_____flower instead of the natural one.

　　A) article文章 B) adventure冒险 C)ancient古老的 D) artificial人造的、假的

　　答案：D 她喜欢假花而不是真花。

　　U15.8 Metals expand when they are heated and ___when cooled.

　　A)indicate指示 B)eliminate消除 C)conquer克服 D)contract收缩

　　答案：D 金属热胀冷缩。

　　2.The doctor is trying to save the patient by every means _____ .

　　A)imaginative 虚构的 B)imaginable 可能的 C)imaginary 虚构的 D)imagination 想象力

　　答案：B医生正在想尽一切可能的办法挽救病人的生命。

　　4. The question then ___:What are we going to do when we graduate from the university?

　　A)raises 上升，饲养(举起或托起它物) B)arouses 唤醒，引起 C)arises 出现，发生 D)rises 上升(使自身上升)