--- It was ____________ for man to work in the forest, especially for a woman, like Jane Goodle.

--- Yes, I can’t agree more. It is said that only after her mother came to help her _______ focus on her project.

A．abnormal, was she able to

B．uncommon, she was able to

C．unusual, was she able to

D．extraordinary, she was able to

对功的理解，下列说法中正确的是（　　）

A．有力又有距离，则力一定做了功

B．力的方向跟距离垂直时，则力没有做功

C．作用在物体上的力越大，则力做的功越多

D．物体移动的距离越短，则力做的功越少