（）的伸长率较大，使用时有弹性，有利于吸收冲击载荷。
A、钢丝绳
B、麻绳
C、化学纤维绳
参考答案：C
—I am going to travel to America．Would you consider telling me about your experiences there?
—__．Let's discuss it over dinner．
A．That's all right
B．Go ahead
C．By all means
D．It just depends
