华图教育每日一练——8月1日
In our class，when the bell rang and the teacher closed his book，it was a ____ for everyone to stand up.
A.signal B.chance C.mark D.measure
【答案】A.
解析：考查名词。根据句意可知打铃及老师合上书本，这是下课的暗示，选项中只能选择signal。chance“机会”，mark“分数，痕迹”，measure“方法，措施”。
华图链接：国家公务员考试新手入门
