【題目】White-collar workers in China are willing to postpone their retirement age ______ blue-collar workers prefer to retire early.

A. when B. while C. though D. since

【答案】A

【解析】

試題分析:考查連詞。A. when當……時；B. while強調(diào)兩者對比、在……時候（強調(diào)兩個動作同時發(fā)生）；C. though盡管；D. since既然。句意：在中國，白領(lǐng)愿意推遲他們的退休年紀，但是藍領(lǐng)希望早點退休，故選A。

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