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问题 选择题

.--Your parents were anxious about you. You _____ home without saying a word.

-- It’s my fault.

A．mustn’t be

B．shouldn’t have left

C．needn’t have left

D．couldn’t have left

答案

答案：B

考查虚拟语气.句意,你的父母很担心你.你不应该没说一句话就离家了.——那是我的失误。可知问句中表示的是对过去的推测。故选B最符合语境。

多项选择题

治疗风痰闭阻型痫病，可在基本处方的基础上加用

A．风池

B．合谷

C．肾俞

D．大椎

E．肝俞
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单项选择题

Until recently, most population growth has occurred in relatively dense urban environments. In (91) words, even if we were witnessing rapid population growth, that would not mean that the (92) were filling in with people. (93) , the urban areas would tend to become more crowded. Historically, we find that people have moved to (94) the jobs were. Jobs were usually in ports or locations with many natural (95) . After transportation became relatively cheap, other geographical locations became (96) of economic activity. One factor that determines where people will move to, even when transportation becomes cheap, is (97) . And individuals working in cities (98) higher incomes than those working in (99) areas. Hence, population has tended until the 1970s to (100) in our major urban centers. Recently population has (101) out of the Northeast to the South and to the West for the more pleasant climates. If people did not (102) from living in large cities, there would likely be a much more even population distribution (103) our entire land area. Probably, if this (104) the case, there would be less concern over population (105) Indeed, one need only (106) a cross-country drive or plane trip to realize how (107) populated these United States really are. This is not to say that we should or should not do something about (108) growth. The shortage of people in certain areas merely demonstrates that overpopulation in the United States is really only a problem in (109) urban environments. And this problem may be slowly correcting (110) .

A．population

B．education

C．people

D．culture
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