272. The family is a cooperative enterprise for which it is difficult to _____ rules, because each family needs to work out its own ways to deal with its own problems.

　 A. set up　　 B. put down　　 C. keep up　　 D. lay down

　[答案]D. lay down.

[注释]lay down制定。参阅Ⅲ，97注释。

271. Although he hasn't any formal qualifications, Betas _____ to do well for himself.

　 A. managed　　 B. succeeded　　 C. arranged　　 D. convinced

　[答案]a. managed.

[注释]manage to do sth.(=succeed in doing sth.)设法做成某事：1)He managed to escape to South America.(他设法逃到了南美。) 2)We managed to get what we wanted, anyhow.(我们反正设法得到了需要的东西。) 3)Do you suppose you can manage to get me a passport?(你能设法给我弄到一份护照吗？)

本题译文：虽然他没有正式的资力，但他收入很多。Do well for oneself吃香，收入多，改善自己的社会地位。

270. John always tries to _____ people who are useful to him professionally.

　 A. develop　　 B. provoke　　 C. correspond　　 D. cultivate

　[答案]D. cultivate.

[注释]cultivate sb.结识(有地位的人)，培养与......的友谊：He always tries to cultivate rich and famous people.(他总是极力结识有钱的知名人士。)

本题译文：约翰总是力图结识在职业方面对他有用的人。

269. What a terrible experience! _____ , you are safe, that's the main thing.

　 A. Somehow　　 B. Anyhow　　 C. Somewhat　　 D. Anywhere

　[答案]B. Anyhow.

[注释]anyhow(at= any rate; in any case)无论如何，不管怎样。

268. He has recently _____ chess to provide himself with some relaxation.

　 A. taken on　　 B. taken up　　 C. held on　　 D. held up

[答案]B. taken up.

[注释]take up开始从事。take on参阅Ⅲ，162,171注释。hold on, hold up参阅Ⅲ，162,171注释。

267. It has been decided that this company has the _____ right to print Mr. Smith's novels.

　 A. eventual　　 B. versatile　　 C. extensive　　 D. exclusive

[答案]D. exclusive.

[注释]exclusive(=reserved to the person(s) concerned)独有的；This bathroom is for the president's exclusive use.

eventual最终的；versatile通用的，万用的；extensive广泛的。

266. Jim's close _____ to his brother made people mistake them for one another.

　 A. confusion　　 B. similarity　　 C. resemblance　　 D. imitation

[答案]C. resemblance.

[注释]resemblance n. 像(to)。 resemble(vt.)像; She resembles her mother.(=She takes after her mother.)

imitation模仿；仿效；confusion混乱，混淆；similarity相似性。

265. I think we should let Maria go camping with her boyfriend. _____, she's a big girl now.

　 A. Above all　　 B. After all　　 C. First of all　　 D. For all

[答案]B. After all.

[注释]after all毕竟。

“for all + 名词”意为“尽管”: For all his wealth, he was unhappy.(尽管他富有，但他并不幸福。)

264. During World War II Malta managed to _____ most of Italian and German bombers by throwing up an effective anti-aircraft screen.

　 A. put out　　 B. shut out　　 C. come across　　 D. get across

[答案]B. shut out.

[注释]shut out(=prevent from coming in; block)排除，排斥：They shut out our dust by having double windows.(他们用双层窗户防尘。)

put out扑灭；get across越过；使人了解；come across偶然遇到。

本题译文：第二次世界大战中，马耳他建立了有效的防空屏障以防止意大利和德国的轰炸机侵入。

263. The room was so quiet that she could hear the _____ of her heart.

　 A. hitting　　 B. beating　　 C. tapping　 D. knocking

[答案]B. beating.

[注释]beating 此处是动名词，指“(心)跳”：Her heart was beating furiously.