题目内容
Study hard, ______ you’ll pass the exam.
| A．because | B．before |
| C．but | D．and |
D
解析试题分析：because因为；before在……之前；but但是；And和，并且。句意：努力学习吧！你就会通过这次考试。结合语境可知前后是顺接关系，故选D。
考点：考查连词辨析
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