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　　1、單選題

　　【填句補(bǔ)文】It’s now socially acceptable, even fashionable, to live alone. As people get better jobs and become financially independent, it becomes possible for them to maintain a one-person household. ________. However, people who do get married are marrying at a later age and divorcing more often.

　　A、There's more pressure to get married nowadays.

　　B、The growing number of women with good jobs has done much to increase the number of people living alone.

　　C、It seems that many grown-ups today are realizing that childhood dream.

　　D、More and more Americans are living alone.

　　正確答案：B

　　答案解析：前句中提到“經(jīng)濟(jì)獨(dú)立”有可能造成保持一個(gè)人的家庭生活，B中的“婦女有好的工作，增加了獨(dú)身的人數(shù)”與前句內(nèi)容正好呼應(yīng)。

　　2、

　　單選題

　　【填句補(bǔ)文】 Although the researchers have only just made the technical details of the microscope public, it is already on sale. It is currently the size of a refrigerator and takes several minutes to scan a circuit, but Xiao and Schrag are working ________.

　　A、to take tiny chips we require

　　B、to making chips any smaller

　　C、to shrink it to the size of a desktop computer and cut the scanning time to 30 seconds

　　D、of conducting electricity

　　正確答案：C

　　答案解析：這部分所說的體積的減小和所需時(shí)間的縮短恰好與前半句中提到的冰箱大小的體積和所需數(shù)分鐘的時(shí)間形成了對比。即：目前它大約像冰箱那么大，而且要用幾分鐘掃描一個(gè)電路，但是他們正在努力使它縮小到臺式計(jì)算機(jī)那么大，把掃描時(shí)間縮短到30秒。

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