汉语语言文化博大精深，其成语或俗语言简意赅，下列成语或俗语中包含有化学变化的是（

New rules and behavior standards(行为规范) for middle school students came out in March. The Middle School is going to use a new way to decide who the top students are. The best students won’t only have high marks. They should not (染) their hair, smoke or drink because they are students. The following are some of the new rules.
Have you ever copied someone else’s work in an exam Don’t do that again! That’s not something an honest student should do.
Do more at school. Good students love animals and care for other people. April is Bird-loving Month in China. Is your school doing anything to celebrate it You should join! And you can learn more about animals and how to protect them. Be friendly to the people around you. Try to think of others, not only yourself.
Be open to new ideas. Do you think people can live on the moon7 Maybe you’ll find another earth someday. Don’t look down on new ideas. Everyone’s ideas are important. You should welcome them, because new ideas make life better for everyone.
Protect yourself. Has someone ever taken money from one of your classmates Don’t let it happen to you. If you have to go home late, you should let your parents know.
Use the Internet carefully. The Internet can be very useful for students. But some things on the Internet aren’t for children, so try to look at web pages (网页) that are good for you.

Good web pages for children can ______.

A．be a waste of time

B．help them with their studies

C．do homework for them

D．make life difficult

第38题到第40题为套题

企业年金专家也认为该公司在员工年龄较轻的时候采取该方案是比较合适的，主要原因不包括（ ）。

A．透明度高

B．适应员工的高流动

C．风险低，政府财政做后盾

D．基金运作，增值潜力大

增加离心泵出口管路阻力，则泵出口压力和流量的变化（）。

A.压力流量均增加

B.压力增加，流量下降

C.压力下降流量增加

D.压力流量均下降

易黄汤的功用是（）

A.清热祛湿，收涩止带

B.固肾止带，清热祛湿

C.疏肝健脾，化湿止带

D.补气健脾，化湿止带

E.健脾益肾，收涩止带

诗句“桂子月中落，天香云外飘”中“天香”是指（）。

A.月宫中飘落的桂花香

B.祭神礼佛之香

C.灵隐寺周围的桂花香

D.天空中飘下的一种神秘香气