高分子材料管的胶粘剂和化学溶剂或清洁剂等易燃品，运输和使用时，必须远离（）。
A.设备
B.人群
C.水源
D.火源
参考答案：D
----If this had happened to you, what would you have done?
----Me? I ________ the alarm.
A．would turn on
B．would have turned on
C．had turned on
D．must have turned on
