单项选择题
（）is the strongest and the most elastic of all the synthetic fiber ropes.
A. Hemp rope B. Wire rope C. Nylon rope D. wood rope
单项选择题 Nylon rope is the strongest and most elastic of all the （）ropes.
单项选择题 Hemp rope rots easily when it is wet. So it is now used only for “small stuff” such as （）.
单项选择题 （）doesn’t shrink or swell after contact with water.
