His grandpa moved to Beidaihe to        the hot weather in Wuhan every summer.

A．escape

B．hit

C．enjoy

D．frustrate

井下搬运严重外伤员的最好办法是（）。

A．背上来

B．抬上来

C．制作简易担架，伤员头朝后抬上来

D．制作简易担架，伤员头朝前抬上来