18、----What do you think has caused the fearful hurricane in American?

-----  out too much warm gas

   A. People cut forest at will and let

   B. Because people cut forest at will and let

   C.When people cut forest at will and let

   D.People’s cutting forest at will and letting

18、A 

解析：C項(xiàng), 不定式表示將要發(fā)生的動(dòng)作，不合題意，首先排除。當(dāng)分詞與主句的主語(yǔ)之間為邏輯上的主謂關(guān)系時(shí)，狀語(yǔ)用現(xiàn)在分詞，排除D項(xiàng)。句意：這位生意人因先遭受了兩次重大損失，他經(jīng)歷了一段艱難的時(shí)期,失去了把生意進(jìn)展下去的勇氣。當(dāng)分詞的動(dòng)作或狀態(tài)先于主句謂語(yǔ)動(dòng)詞而發(fā)生時(shí)，應(yīng)使用現(xiàn)在分詞的完成式having done來(lái)表示，因此，排除B項(xiàng)。

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----What do you think has caused the fearful hurricane in American?

-----  out too much warm gas

   A. People cut forest at will and let

   B. Because people cut forest at will and let

   C.When people cut forest at will and let

   D.People’s cutting forest at will and letting

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科目：高中英語(yǔ) 來(lái)源： 題型：

----What do you think has caused the fearful hurricane in American?

-----       out too much warm gas

   A. People cut forest at will and let

   B. Because people cut forest at will and let

   C.When people cut forest at will and let

   D.People’s cutting forest at will and letting

 

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