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Cars play an important role in modern life, but they_______also cause many problems like air pollution.

       A.should     B.can   C.must        D.Will

B


解析:

考查情态动词。这里的肯定句表示“有时会,可能会”,用can。注意can与must都能用于肯定句中表示肯定的推测与判断,表示具体情形的推测判断用must,而can表示一般性的叙述,“有时会”。

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   B. are devoted to the technological revolution in car industry
C. consider the predictions seriously
   D. have put the super-intelligent car into mass production
【小题2】 Which of the following will be the characteristic of the cars of 2020?
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   B. We will own as many cars as we want.
C. All cars will be driven by computers.
D. Cars will produce more pollution than present ones.
【小题3】The leader of the research team believes that the present car culture will change because        .
A. cars play a very important role in daily life
B. many societies would stop functioning without cars
C. cars should not be owned by one individual
D. it causes many deaths to human society
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【小题5】 What will happen if cars are joined to each other electronically in 2020?
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