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。

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。

273. After a short holiday, he _____ himself once more to his studies.
A. applied    B. converted    C. engaged    D. exerted

[答案]A. applied.

[注释]apply oneself to“致力于”。Apply one's mind to(专心于)。Apply to sb. for aid(向某人求援)。Apply a theory to practice(把理论应用于实践)。

274. She felt _____ of having asked such a silly question when the audience   couldn't help laughing.
A. guilty  B. crazy C. miserable  D. ashamed

[答案]D. ashamed.

[注释] be ashamed of因......感到羞耻，惭愧：1)He is ashamed of what he was done.2)She felt ashamed of having done so little.(=She felt ashamed that she had done so little.) 3)John was ashamed to ask for help.(他不好意思向人求助。) 4)Jim was ashamed to have troubled me with so many questions.Be guilty of犯有......罪，过失：1)He was found guilty. 2)I am not guilty of this crime.

275. The driver can adjust the heating in winter and the air conditioning in   summer to suit his own _____.
A. leisure   B. preference C. convenience  D. selection

[答案]B. preference.

[注释]preference偏爱，更加喜欢：My preference is for beef rather than for lamb.(我更喜欢牛肉面不是羊肉。)

276. There is not much time left; So I'll tell you about it _____.
A. in detail   B. in brief   C. in short  D. in all

[答案]B. in brief.

[注释]in brief(=in a few words)简短地（作状语）,例如：He told me in brief what had happened.（他简短地向我讲了已发生地事情。）此处in brief等于briefly。此处，in brief(=in a word, in short)简言之（作插入语）1)It is a long letter, but in brief, he says "No".(这是一封长信，但简言之，他说“不”。) 2)John is smart, polite, and well-behaved. In brief, he is admirable.此句中in brief意为in a word 或in short. in short作插入语，其意思是in a word(总之)。In detail详细地。In all总计，总共：There are 20 in all.

277. She got married although her parents had not given her their _____.
A. allowance   B. consent   C. permit  D. appreciation

[答案]B. consent.

[注释]consent n. 同意，赞成；consent (to) vi.同意，如：consent to a plan(同意一项计划)。allowance津贴。permit执照，许可证。

278. The rain was heavy and _____ the land was flooded.
A. consequently    B. constantly
C. continuously    D. consistently

[答案]A. consequently.

[注释]consequently (as a result)因而，所以。

279. Magnificent views over the countryside have often _____ people to write   poems.
A. convinced   B. inspired C. induced  D. attracted

[答案]B. inspired.

[注释]inspired鼓舞，激励，产生：1)His speech inspired us to try again. 2)He inspired confidence in me.(他使我产生信心。) 3)The good news inspired us with hope.(这个好消息使我们产生希望。)

280. From the cheers and shouts of _____, I gathered that he was winning the   race.
A. stimulus B. urgency  C. encouragement D. promotion

[答案]C. encouragement.

[注释]encouragement鼓励，支持：shouts of encouragement(鼓励的欢呼声)。

本题译文：从欢呼声和鼓励声中，我猜想他正在赢得这场竞赛。