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251. It is not profitable to provide bus services in districts where the population is widely _____.

A. scattered　 B. dismissed　 C. separated　 D. spread

[答案]A. scattered.

[注釋]scattered是scatter的過去分詞，也可作形容詞用，(=lying in different directions; not situated together, wide apart)分散的，散布在各處的。Separate分開的，spread傳播；攤開，dismiss解雇。

250. He _____ the place where he had been bitten by an insect.

A. snatched B. scratched　 C. squeezed　 D. stretched

[答案]B. scratched.

[注釋]scratch抓，搔。此外，有一常用習(xí)語：scratch one's head over sth.對某事迷惑不解，搔頭皮。Snatch掠奪；stretch拉長，延伸，撐大；squeeze壓榨，擠。

249. Trains stop here in order to _____ passengers only.

A. get off　　 B. pick up　　 C. pull up　　 D. pull in

[答案]B. pick up

[注釋]pick up passages(接運(yùn)旅客上車。)

pull in(火車)進(jìn)站；(船)靠岸；pull up停車；get off下車。

248. This album is _____ as it was the only one ever signed by the President.

　 A. unusual　　 B. unique　　 C. rare　　 D. special

[答案]B. unique。

[注釋]unique(某一類中)獨(dú)一無二的。如選unusual(不尋常的，獨(dú)特的)，雖然也說得過去，但毫無疑問，unique是最佳選擇，因?yàn)樗�的后面the only one相呼應(yīng)。Special專門的，專用的，例如；They went to London on a special train.[他們搭一班專車(或加班車)去倫敦。]rare稀有的，罕見的，如：rare metals(稀有的金屬)。Singular單數(shù)的。

247. In aerospace devices the weight of the necessary power producing equipment is _____.

A. vital　　 B. possible　　 C. capable　　 D. reliable

[答案]A. vital。

[注釋]vital 極其重要的。本題譯文：在航空航天裝置中必要的動力設(shè)備的重量問題是至關(guān)緊要的。

246. There was a good _____ of the countryside from the front of the bus.

　 A. sight　　 B. view　　 C. scene　　 D. scenery

[答案]B. view。

[注釋]view在本句中意指“看，眺望”，如：It is a large room with a view of the doctor's well-kept garden. (這是一間大房間，從房間里能看到醫(yī)生精心管理的花園。)本題譯文：坐在汽車的前排座位可以清楚地看到鄉(xiāng)間的景色。

245. And you find that you're not to be _____ with a position of real responsibility.

A. offered　 B. trusted　 C. furnished D. retained

[答案]B. trusted。

[注釋]trust sb. with sth. 把某事托付給某人：I can't trust him with my car.(我不能把我的車托付給他。)本題譯文：你認(rèn)為不會把真正有責(zé)任的工作托付給你。

244. They decided to leave the waiter a big _____ because the food and service had been excellent.

　 A. note　　 B. reward　　 C. tip　　 D. gift

[答案]C. tip。

[注釋]tip 本題中意為“小費(fèi)”。

243. The patients believe that the doctor knows exactly how to put them _____.

　 A. correct　　 B. perfect　　 C. right　　 D. well

[答案]C. right。

[注釋]put sth. /sb. right 糾正；治好，使恢復(fù)健康：Since man has done so much damage, it is up to man to put the matters right. (既然人類已造成了如此巨大的損害，人類又哲人糾正這種狀況。)又如：This medicine will soon put you right. (這藥很快會使你恢復(fù)健康。)其他3個選擇均不能與put 構(gòu)成習(xí)語，故不能入選。

本題譯文：病人相信醫(yī)生清楚地知道怎樣治好他的病。

242. Stressful environments lead to unhealthy behaviors such as poor eating habits, which _____ increase the risk of heart disease.

A. in turn　 B. in return　 C. by chance D. by turns

[答案]A. in turn。

[注釋]in turn (插入語)轉(zhuǎn)而，依次，而又：We need revision of estimated sales and this, in turn , will mean revision in production schedule. (我們必須修改預(yù)計(jì)銷量，而這反過來又意為這修訂生產(chǎn)計(jì)劃。)in return 作為報答: I wish I could do something for you in return. (我要是能為你做點(diǎn)事作為報案就好了。)I gave him a present but he gave me nothing in return.(我送給他一份禮物，可他卻什么也不給我作為答謝。)by chance (=by accident)偶然地；無意中：I meet him by chance on Fifth Avenue.(我偶然在第5大街上遇到他。)by turns 輪流地，依次：There were twelve of us in the boat and we rowed by turns.(船上有12人，我們輪流劃船。)

本題譯文：緊張的環(huán)境會導(dǎo)致諸如不良的飲食習(xí)慣等不健康行為，而后者又會增加患心臟病的危險。