题目内容
15.As there is less and less coal and oil,scientists are exploring new ways of making use of _____energy,such as sunlight,wind and water for power and fuel.( )A. | primary | B. | alternative | C. | instant | D. | unique |
分析 既然石油和煤都越来越少,人们只好使用一些其它可替代这些燃料的东西.
解答 答案:B.分析各个选项的意思,A.primary"首要的,初期的",B.alternative 可选择的,可替代的,C.instant"立即的,迅速的",D.unique"独特的".结合句意正确答案应该为B.
点评 题考查词意辨析,只要明确各个选项的意思和用法,结合句意很容易得出答案.

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