问题 选择题

区别下列物质的方法中,不能将本组待区别的物质区别开的是(  )

选项待区别的物质区别方法
A木炭粉和铁粉分别在空气中点燃,观察能否燃烧
B一瓶人呼出的气体和一瓶空气分别注入相同的澄清的石灰水,振荡,观察现象
C硬水与软水分别加入肥皂水,泡沫较少产生浮渣的是硬水
D二氧化碳、氧气和空气分别将带火星的木条伸入瓶中,观察现象

A.A

B.B

C.C

D.D

答案

A、在空气中点燃木炭粉和铁粉,能够燃烧的是木炭粉,不能燃烧的是铁粉,可以区分.

B、向一瓶人呼出的气体和一瓶空气中分别注入相同的澄清的石灰水,振荡,浑浊现象明显的是人呼出的气体,不明显的是空气,可以区分.

C、向水中加入肥皂水时,如果产生的泡沫较多,是软水,如果产生的泡沫很少或不产生泡沫,是硬水,可以区分.

D、将带火星的木条分别伸入瓶中,能使带火星的木条复燃的是氧气,另外两瓶无明显现象,不能区分二氧化碳和空气,不能区分.

故选:D.

阅读理解

When someone has deeply hurt you, it can be very difficult to let go of your anger. But forgiveness is possible - and it can be surprisingly helpful to your physical and mental health. Indeed, research has shown that people who forgive have more energy, better appetite (胃口) and better sleep. “People who forgive show less anger and more hopefulness,” says Dr. Frederic Luskin, who wrote the book Forgive for Good. “So it can help save on the wear and tear(消耗) on our body and make people feel more energetic.”

So when someone has hurt you, calm down first. Take plenty of breathe deeply and think of something that gives you pleasure: a beautiful scene in nature, someone you love. Don’t wait for an apology(道歉). “Many times the person who hurt you may never think of apologizing,” says Dr. Luskin. “They may have wanted to hurt you or they just don’t see things the same way. So if you wait for people to apologize, you could be waiting a very long time.” Keep in mind that forgiveness does not necessarily mean accepting the action of the person who makes you angry. Mentally going over your hurt gives power to the person who brought you pain. Instead, learn to look for the love, beauty and kindness around you. Finally, try to see things from the other person’s perspective(视角). You may realize that he or she was acting out of ignorance (无知), fear, even love. To achieve the perspective, you may write a letter to yourself from that person’s point of view.

小题1:When someone has deeply hurt you, it’s not easy for you to ________.

A.feel very angry

B.let go of your anger

C.keep remembering it

D.let your anger appear小题2:What will you do first when someone has hurt you?

A.Take much breathes deeply.

B.See things in a different way.

C.Keep yourself calm.

D.Go over your hurt.小题3:According to the writer, what is the right way to calm down after being hurt?

A.Try to make sure why you get hurt.

B.Write a letter to the person who hurt you.

C.Tell yourself to accept what others have done to you.

D.Think about pleasant things and forget about the hurt.小题4:Dr. Luskin advises us not to wait for an apology after being hurt because ______.

A.we are not patient enough

B.we’d feel worse accepting others’ apology

C.people seldom want to apologize

D.people don’ t mean it when they apologize小题5:This passage is mainly written to explain _______.

A.how to keep yourself from being hurt

B.how to stay mentally healthy

C.how and when to stay calm

D.why and how to forgive others

单项选择题