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        1. Some of the students are nearsighted______they spend too much time watching TV or playing online games.

          A.when B.though C.because D.unless

          C

          解析試題分析:句意:一些學(xué)生近視眼,因?yàn)樗麄兓ㄙM(fèi)太多的時(shí)間在看電視和網(wǎng)絡(luò)游戲上。A當(dāng)連接時(shí)間狀語(yǔ)從句B雖然,轉(zhuǎn)折連詞,D如果不,條件狀語(yǔ)從句。故選C,因?yàn),連接原因狀語(yǔ)從句。
          考點(diǎn):考查連詞

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