认识的本质是( ).
A．思维的自由创造物
B．主体对客体的能动的反映
C．客观实在自身了
D．社会实践
参考答案：B
The order came that the medical supplies______to Beijing for the H1N1 flu soon. [ ]
A. would be sent
B. should send
C. be sent
D. must be sent
露点是（）冷凝指标
A.气体
B.液体
C.固体
D.悬浮液
