题目

在实验里，将一支温度计从酒精中取出，温度计的示数变化情况是      A．一直升高        B. 一直降低     C. 先升高后降低     D. 先降低后升高 答案：D－It’s necessary to limit the speed of electric bikes. －Yes, most riders of electric bikes in China        40-50 kilometers per hour often ignore red lights,        the risk of traffic accidents.  A. reaching; increase               B. reach; increase C. to reach; to increase                D. reaching; increasing