因式分解一题.9（m+n)^2-4(m-n)^2

It can be inferred that______.

A．the Japanese government has contributed to the saving of the dying native tongue

B．the eight elderly people have to teach their native tongue to foreigners

C．Japanese people now are very interested in learning Ainu

D．the Japanese government has forced its young people to learn Ainu

请帮忙给出正确答案和分析，谢谢！

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！