17.Work harder,________you will not keep up with others.(  )
A.and/B.orC.so

分析 努力工作,否則你將落后于其他人.

解答 答案:B.根據(jù)語(yǔ)境以及上下文,本題考查的是連詞的用法.根據(jù)選項(xiàng)的意思,A選項(xiàng)的意思是"和、又",表示并列關(guān)系;B選項(xiàng)的意思是"否則",表示相反的假設(shè);C選項(xiàng)的意思是"因此",表示因果關(guān)系;此外,根據(jù)句意"努力工作,…你將落后于其他人."可知,應(yīng)該使用or來(lái)表示相反的假設(shè),表示否則,要不然.故選B.

點(diǎn)評(píng) 做這種題時(shí),首先要根據(jù)語(yǔ)境及上下文確定考察范圍--連詞;其次根據(jù)句意確定連詞;再次根據(jù)選項(xiàng)中的連詞即可確定答案.

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