In this experiment, they are woken up several times during the night, and asked to report what they＿＿.

A．had just been dreaming

B．are just dreaming

C．have just been dreaming

D．had just dreamt

静压路机工作时，应（）。

A.根据碾压要求选择机重

B.光轮压路机需要增加机重时，可在滚轮内加砂或水

C.气温降至0℃时，不得用水增重

D.含水量少于5%时，宜适当洒水