问题 选择题

下列家庭小实验不能成功的是(  )

A.用淬火后的钢针制钓鱼钩

B.用6B铅笔芯做石墨导电性实验

C.用报纸与保险膜研究透气性

D.用冷瓷碟罩在蜡烛火焰上方制炭黑

答案

A、淬火后的钢针变脆,韧性减弱.不能成功.

B、铅笔芯中含有石墨,石墨的导电性良好.能成功.

C、用报纸与保险膜研究透气性,能成功.

D、用冷瓷碟罩在蜡烛火焰上方制炭黑,能成功.

故选A.

阅读理解

Miyoke, 13
Do you want to know where I come from? Oh, please guess(猜)! I can speak good Japanese(日语), but I can’t speak English or Chinese at all. I like white a lot, so you can see me in a white shirt at school.
Grace, 12
Am I very cool? I have long hair with two big eyes. I have an e-friend from China, but she lives in London with me now. She studies English here. I often help her study English.
Maria, 12
I like little animals very much. Dogs are my favorite. So I have two dogs at home, but my mom doesn’t like them at all. I often give some eggs and cakes to them. They like me, too, and they can help me.
Tian Jun, 13
Chinese is my mother language(语言), but I study English at school. Now I can speak a little English. I often have some emails from my friend in the USA. He tells me how to study English in his e-mails. He says he likes Beijing. He wants to visit the Great Wall very much.
小题1:Miyoke is from      .

小题2:Grace has        .
A.long hair with two small eyes
B.an e-friend from London
C.a Chinese e-friend
D.short hair with two big eyes
小题3:     doesn’t like dogs at her home at all.
A.Miyoke’s mom
B.Maria’s mom
C.Maria’s e-friend
D.Tian Jun’s friend
小题4:Tian Jun can        now.
A.only speak Chinese
B.speak Japanese
C.speak Chinese and English
D.speak Chinese and Japanese
小题5:Which is RIGHT according to the passage?
A.Miyoke is often in a brown shirt at school.
B.Grace lives with her e-friend in Beijing now.
C.Tian Jun’s friend wants to visit Beijing a lot.
D.Maria doesn’t have a dog at her home.
单项选择题