the data collected by weather airplanes that fly into the heart of a hurricane are useful mainly for gauging the storm's structure and strength, not for the speed and the path of their movement
a>not for the speed and the path of their movement
bnot for the speed and path of its movement
c>not the speed and path of its movement
d>and not the speed and path of their movements
e>and not for the speed and the path of its movement
这个题目我觉得应该选择E,但是答案给的是C。我觉得C明显不对 因为the speed and path形式上不完全对称,另外AD不对因为不可以用their,应该用its指代hurricane 单数形式。