北京東城區(qū)示范校2011屆高三綜合練習(xí)（二）

_____ computers are convenient to us in daily life, it may also cause other problems.

A. Whether            B. Because      C. As              D. While

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北京東城區(qū)示范校2011屆高三綜合練習(xí)（二）

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北京東城區(qū)示范校2011屆高三綜合練習(xí)（二）

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北京東城區(qū)示范校2011屆高三綜合練習(xí)（二）

 So involved with computers ____ that the leaders at the summer computer camps often had to force them to break for sports.

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北京東城區(qū)示范校2011屆高三綜合練習(xí)（二）

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