NULL与void *是不同的概念，NULL是一个指针值，任何类型的指针都可赋予该值。而void *是一种类型，

I was crossing the street and was almost _______ by car.

A、attacked

B、dicked

C、hit

D、held

TTL OC门(集电极开路门 )的输出端可以直接相连，实现线与 。()

He worked in our university as a football ()for nearly five years.

A、clerk

B、grain

C、coach

D、couch

This company provides a very good ()service for its products.

A、maintenance

B、merit

C、philosophy

D、pigeon