171.It is clear that the whole world is passing through a social revolution in which a central_____must be taken by scientists and technologists.

　　A.process B.attention C.measure D.part

　　[答案]D.part.

　　[注釋]take part in參加。

　　本題譯文：顯然，整個世界正經(jīng)歷著一場社會革命;科學(xué)家和技術(shù)人員必定是這場革命地主要參加者。

　　172.The farmers were more anxious for rain than the people in the city because they had more_____.

　　A.at length B.at last C.at stake D.at ease

　　[答案]C.at stake.

　　[注釋]at stake(=to be won or lost;risked,depending upon the result of sth.)在危險中;利害攸關(guān);His life itself was at stake.(他的生命本身瀕臨危險。);at last最終;at length詳細地;at ease安詳，自在，隨便，不拘束：She knew he was not at ease.(她知道，他并不自在。)

　　本題譯文：農(nóng)民們比城里人更渴望魚，因為雨水對農(nóng)民來說關(guān)系更大。

　　173.When the big bills for mother's hospital care came,father was glad he had money in the bank to_____.

　　A.fall short of B.fall through

　　C.fall back on D.fall in with

　　[答案]C.fall back on.

　　[注釋]fall back on求助于。參閱Ⅲ.48注釋。

　　Fall short of沒達到，低于：1)He fell short of what we had expected.(他沒有達到我們的期望。)2)The measures proposed fall far short of what is required.(所提出的這些措施遠沒達到需要的目標(biāo)。)

　　Fall in with與......一致，符合;同意，贊成，支持。

　　Fall through落空。參閱Ⅲ.49注釋。

　　本題譯文：母親在醫(yī)院就醫(yī)的各種帳單送來時，父親高興的是他可用銀行里的存款來支付。

　　174.These plastic flowers look so_____that many people think they are real.

　　A.beautiful B.natural C.artificial D.similar

　　[答案]B.natural.

　　[注釋]natural自然的，與后半句“許多人認(rèn)為它們是真的”相呼應(yīng)。

　　175.The managing director promised that he would_____me as soon as he had any further information.

　　A.communicate B.notice C.notify D.note

　　[答案]C.notify.

　　[注釋]notify通知。Notice n.通知;v.注意到;note n.筆記;v.記下，摘下。