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　　1.單選題

　　【填句補(bǔ)文】The typical person living alone is neither old nor lonely. ________. The majority of these people have chosen to live alone. They are responding to decreasing social pressure to get married and have a family.

　　A、This is a dramatic change from the extended families of just a couple of generations ago.

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

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

　　D、In fact, a quarter of the 23 million single people in the U.S. are under the age of 35.

　　正確答案：D

　　答案解析：空格后句中出現(xiàn)代詞“these people”，而空格前句出現(xiàn)的人是單數(shù)形式，因此判斷空格處應(yīng)該出現(xiàn)表意復(fù)數(shù)的人，從而與these people相呼應(yīng)。而且空格前句提到了“年齡(old)”，所以判斷D是答案，a quarter of the 23 million single people是復(fù)數(shù)名詞，而且D中提到了年齡(35歲以下)。

　　2.單選題

　　[概括大意]So far there is no data to suggest that people living on metal-rich soils experience a potential health hazard. The levels of metals within naturally contaminated soils are generally not high enough to cause serious health problems. Living on metal-rich soils does not represent a health risk unless large quantities of soil are digested or metal-rich dust is inhaled. However， small children are particularly exposed to metal-rich topsoil in playgrounds and gardens. They are also the most likely ones to eat potentially dangerous metal-rich soil.

　　The main idea of this paragraph is__________.

　　A、Potential Hazards of Human Contaminated Soils

　　B、Research on Channels of Heavy Metals Getting into Human Food Chain

　　C、Long- term Health Effects on Health Problems

　　D、No Evidence to Indicate Bad Effects of Naturally Contaminated Soil

　　正確答案：D

　　答案解析：本段文字涉及到的是自然污染的土壤一般情況下對(duì)人體不會(huì)造成危害，首句So far there is no data to suggest that people living on metal-rich soils experience a potential health hazard.便提示出這一點(diǎn)，而D選項(xiàng)只是這個(gè)句子的同義轉(zhuǎn)述。

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