________ pollution, not enough heat is leaving the earth．


  1. A.
    Because
  2. B.
    Because of
  3. C.
    So
  4. D.
    As
B
選B。because of意為“由于”，后接名詞或短語；because，so，as后接從句。
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科目：初中英語 來源： 題型：閱讀理解

You’ve probably known the crazy traffic in Beijing. Sometimes the cars could hardly move for a long time. The terrible traffic is caused by the poor road and China’s ability to cope with (對(duì)付) so many cars on the road at the same time.
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【小題2】__________ cars will be on the road by the end of 2010.
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