题目内容

() 29. You can't go to the reading room you have a school ID card. It's only for students.

   A. if   B. because

   C. when   D. unless

29. D

29. D.本小题考查连词辨析。引异条件状语从句，意为“如果”;because引 导原因状语从句，意为“因为”；when 引导时间状语从句，意为“当……的时 候”；unless引导条件状语从句，相当 于if…not,意为“除非”。根据“阅览 室只为学生开放”可知，你不能去除 非”你有学生证，故选D.

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