19．When I try to understand that prevents so many Americans from being as happy as one might e——青夏教育精英家教网——

19．When I try to understand _____ that prevents so many Americans from being as happy as one might expect，it seems to me that there are two causes．（　　）

18．经历一次次失败之后，我们认识到做任何事情没有捷径，要成功非下苦功不可．（experience）Havingexperienced/Afterwehaveexperiencedfailureafterfailure，werealizethatthereisnoshortcutindoinganythingandwewon'tsucceedunlessweworkhard．

17．虽然不被公众看好，但这位歌手仍然坚持自己的演唱风格．（stick）Although the singer is not well recognized/received by the audience（popular with the audience），he sticks to his own singing style．

16．这是最新款的手机，有些功能我不太熟悉．（familiar）This is a newly released/the newest mobile phone，and I am not quite familiar with some of the functions．

15．中国加入世贸组织至今已十年了．（since）It is/has been ten years since China joined WTO．

14．我们有必要在出发前制定一份计划．（It…）Itisnecessaryforustomakeaplanbeforewestart．

13．-You should get a new job，stop smoking，and have a healthier lifestyle．
-________．（　　）

	A．	Mind your own business		B．	Never mind
	C．	That's all right		D．	Easier said than done

12．---We've missed the train!
---_________!There'll be another in ten minutes．（　　）

11．-Hello，may I speak to Dr．Bush？
- ．（　　）

10．-Beautiful day，huh？
---_______（　　）

	A．	It's pouring outside．
	B．	What miserable weather!
	C．	We haven't had a drop of rain for months．
	D．	We couldn't ask for a better day than this．

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