试题与答案

美国初中化学教材把化学反应分为几种类型,其中一种就是燃烧反应:一种物质快速结合氧

题型:选择题

题目:

美国初中化学教材把化学反应分为几种类型,其中一种就是燃烧反应:一种物质快速结合氧气生成一种氧化物的反应,下列反应既属于化合反应又属于燃烧反应的是

A.C+2CuO 高温2Cu+CO2

B.S+O2点燃SO2

C.CO2+ H2O===H2 CO3

D.CH4+2O2点燃CO2+ H2O

答案:

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参考答案:C解析:熟悉我国国债的发行概况、我国国债的品种、特点和区别。

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It is not so easy to disagree with your parents.Here are a few quick tips on how to show your opinion in the right way.

小题1: Don’t let angry words fly out of your mouth if you don’t really want to say them,or you will have a lot of work to do later.

小题2: How would you feel if you were your mother or father? Why do they do that? Is it really bad?

Try to stay calm.If you find yourself getting too angry, ask for softie time Io be alone.小题3:

Learn to listen.Maybe your parents aren’t as persuasive(具有说服力的)as you think.小题4: 

Pay attention to needs rather than problems 小题5: Tell your parents that you want to discuss the problem with them rather than work against them.

A.Think before you speak.

B.Never listen to your parents

C.Think about the problem from your parents’ point of view.

D.It is quite common to disagree with one’s parents.E.Hear them out and then decide how to deal with the problem.

F.Be clear about what you need,rather than focus on why you disagree.

G.If you can, try to discuss the problem with your parents at another time.

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