[题目]-One can't be successful he or she keeps working hard.-I agree with you.A. although B. unless C. because D. if 题目和参考答案——青夏教育精英家教网—

【题目】—One can't be successful ________ he or she keeps working hard.

—I agree with you.

A. although B. unless C. because D. if

【答案】B

【解析】句意：-一个人如果不努力工作，就不会成功。-我同意你的看法。A. although即使，引导让步壮语从句；B. unless除非、如果不，引导条件状语从句；C. because因为，引导原因状语从句；D. if如果，引导条件状语从句。故选：B。

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