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问题 选择题

Usually a meteorological observatory (气象台) _____ air quality in urban areas from one to five: excellent, fairly good, slightly polluted, poor, and dangerous.

A．identifies

B．purifies

C．classifies

D．clarifies

答案

答案：C

题目分析：考查动词：A. identifies识别，B. purifies使…纯洁，使…净化，C. classifies分类，分别，D. clarifies阐述，说明，句意：通常一个气象观测站把城市中的空气质量分类从一到五:非常好,相当好,轻微污染,差,和危险的。选C。

单项选择题

Visitors to this country are normally admitted for six months, but foreign students can usually stay for one year. They must (51) an educational institution, and they are required to study for a minimum of fifteen hours a week on a (52) course. Prospective students have to show that they can afford their studies, and that they have sufficient (53) resources to support themselves (54) in this country.

In order to work here the foreigner needs a work permit, (55) must be applied for by his prospective employer. The problem here is that the Department of Employment has the right to grant or (56) these permits, and there is little that can be done (57) it; it would be extremely unwise for a foreign visitor to work (58) a permit, since anyone doing so is liable to immediate deportation (驱逐出境). There are some people from the Common Market countries, who are often given (59) residence permits of up to five years. Some other people, such as doctors, foreign journalists, authors and others can work without permits, and foreign students are normally allowed to (60) part-time jobs while they are studying here.

55().

A.when 

B.what 

C.where 

D.which
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选择题

—Who is the man talking to the detective? 

—Maybe he is one of the ________ who is asked to tell what he saw. [ ]

A. witness

B. suspects

C. actress

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