近地面大气的热量主要来自（）
A.地面辐射
B.太阳辐射
C.大气辐射
D.大气逆辐射
参考答案：A
----- Sally is strongly against taking the trip to Hainan.
----- _______? It was she who suggested the plan.
A．How come
B．What about
C．Real
D．Why not
教育实验研究的主要功能。
