求一道题的因式分解,4x^4y^2–12xy

What does the woman give the man at last？

A．The man"s credit card.

B．The man"s signature.

C．The bill for the room.

D．The room key.

请帮忙给出正确答案和分析，谢谢！

What does the man say about himself？

A．He doesn"t have a studying brain.

B．He is afraid of examinations.

C．He doesn"t have a gift for English.

D．He hates to be a postgraduate.

请帮忙给出正确答案和分析，谢谢！

All of the following are the plans the woman mentioned EXCEPT______.

A．doing some volunteer work

B．doing some exercise

C．making some friends

D．enjoying the recreational activities

请帮忙给出正确答案和分析，谢谢！

学校卫生监督工作的主要执行依据是

A、《中华人民共和国宪法》

B、《中华人民共和国义务教育法》

C、《中华人民共和国未成年人保护法》

D、《中华人民共和国传染病防治法》

E、《学校卫生工作条例》

请帮忙给出正确答案和分析，谢谢！

Why does the man look so tired？

A．He worked for the whole night.

B．He played computer games last night.

C．He talked with his roommate last night.

D．He was bothered by the noise in his room.

请帮忙给出正确答案和分析，谢谢！