【題目】Life doesn’t count for much _____ you’re willing to do your small part to leave our children a better world.

A. unless B. when

C. though D. if

【答案】A

【解析】

考查狀語從句連詞。A. unless除非，如果…不…；B. when當…時；C. though盡管；D. if如果；句意：如果你不愿意付出你的努力給孩子們留下一個更加美好的世界，生活就沒有意義。根據(jù)句意可知本句應(yīng)該使用連詞unless引導(dǎo)條件狀語從句。故A正確。

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