_____, the great mother, in order to sav
题型：选择题
问题：
| _____, the great mother, in order to save her sick child, kept waiting for four hours in the heavy snow. |
A. It depends B. Take it easy C. Believe it or not D. It is OK |
题型：选择题
| 小明同学利用圆珠笔杆、钢丝、细绳制成了如图所示的滑轮组用其匀速提升重物，不考虑摩擦、笔杆和绳重，下列说法正确的是（ ） A．拉细绳的力F等于钩码重力G的 B．拉细绳的力F等于钩码重力G的 C．拉细绳的力F等于钩码重力G的 D．拉细绳下降的距离是钩码上升高度的  |
