40个小朋友大约重100千克．______． （判断对错）
由分析可知：40个小朋友大约重1000千克；
故答案为：×．
分娩时最主要的产力是
A．腹压力
B．子宫收缩力
C．腹肌收缩力
D．膈肌收缩力
E．肛提肌收缩力
The new equipment ______ the disabled during the 2008 Beijing Paralympics. [ ]
A. was intended for
B. was intended to
C. intended for
D. intended to
