一个数除以4，商是163，余数是1，这个数是（ ） A．652 B．651 C．653

Excuse me.Could you tell me_______?Which of the following is WRONG?

A．how to get to the city library

B．which is the way to the city library

C．the way to the city library

D．how can I get to the city library

Tom pretended______it but in fact，he knew it very well.

A．not listen to

B．not to hear about

C．not to have heard about

D．not to be listening to

精子生成的部位是（）

A．睾丸

B．精囊、前列腺和 * * 球腺

C．附睾

D．输精管、射精管

E．精索

手工操作导致的伤害有哪些？