问题 选择题

下列反应的离子方程式中,正确的是                                                            (   )

A.碳酸钙与醋酸反应:CO32-+2CH3COOH=CO2↑+H2O+2CH3COO-

B.向氯化铝溶液中加入过量氨水:Al3+ + 3OH- = Al(OH)3↓

C.次氯酸钙溶液中通入少量二氧化硫:Ca2++2ClO- + SO2 + H2O ="CaSO3↓+" 2HClO

D.硫酸与足量氢氧化钡溶液混合:2H++SO42-+Ba2++2OH-=BaSO4↓+2H2O

答案

答案:D

阅读理解

阅读短文, 按要求完成短文后的各项任务。

Today more and more young people in China would like to spend their school holiday working for others. And they don’t do it for money. Here are some of the kind young men’s  stories.

Li Ping , 17

I am going to help the Forest Centre build new roads. I will spend the summer living in a tent and enjoying the clean air. I am going to sleep under the stars. It will be a nice sport, and I will be able to do something helpful at the same time.

Wu Dong, 18

This summer, I am going to take part in the Spring House Club. They build good houses and give them to poor(贫穷的) families. (1)I will help them and they will teach me what to do. I can also learn how to build houses.

Liu Hui, 16

I am going to teach children to (2)____________. I will work for the club “Reading for life”. Every day, I am going to help children find interesting books, and I want to be a (2)__________. So I can stay with children every day. This is going to be great for me.

小题1:将(1)处句子翻译成中文。

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小题2:在(2) 处填上适合的词,使句子意思完整。

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小题3:回答问题What is Li Ping going to help to do?

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小题4:找出该句同意句。And they don’t get any money for doing it.

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小题5:找出文章的主题句。

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单项选择题