下列选项中，不属于按被处理按空气来源划分的空调系统是（）空调系统。
A.封闭式
B.直流式
C.分散式
D.混合式
参考答案：C
The man lay on the road. Luckily, he was not _____ hurt. [ ]
A. bad
B. badly
C. hardly
D. serious
---Where’s the little elephant?
---It’s said it ___ in the hospital.
A．was examined
B．will be examined
C．is being examined
D．has been examined
