题目内容
Don’t run in the classroom, you may hurt yourself.
| A．and | B．or | C．but | D．so |
B
解析试题分析：句意：不要在教室里跑，否则你会受伤。A. and 而且，表示递进关系； B. or否则，用于警告和忠告； C. but 但是，表示转折关系； D. so所以，表示因果关系。根据Don’t run in the classroom,可知此处祈使句，表示警告他不要在教室里跑，可能会受伤。故选B。
考点：考查连词的用法。
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