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8.________ he found the idea interesting,it was too difficult to be of practical use.(  )
A.WhileB.OnceC.IfD.Until

分析 尽管他发现这个主意很有趣,它却很难有实际的用途.

解答 答案:A.根据the idea interesting和it was too difficult to be of practical use可知两句之间是让步关系,表示尽管他发现这个主意很有趣,它却很难有实际的用途,所以答案是A while"然而,尽管".其他选项的含义分别是B"一旦";C"如果";D"直到".

点评 考查从属连词.while 用作连词时,有以下几种含义:
1.意为"当…时候,和…同时",引导时间状语从句.例如:
While I was watching TV,the bell rang.
(我看电视时,铃响了.)
2.意为"虽然,尽管",引导让步状语从句.例如:
While it was late,he went on working.
(虽然很晚了,但他还在继续工作.)
3.连接两个并列句子,表示"对比"关系.例如:
He went out for a walk,while I stayed at home.
(他出去散步了,而我却呆在家里.)

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