keyboard,hard-working,well-known,breakdown,software1. Madame Curie is a scientist,who won two Noble Prizes.2. He's a but not very intelligent boy.3. My computer has had a and it doesn't work now.4. I 题目和参考答案——青夏教育精英家教网—

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keyboard,hard-working,well-known,breakdown,software

1. Madame Curie is a_______ scientist,who won two Noble Prizes.

2. He's a_______ but not very intelligent boy.

3. My computer has had a_______ and it doesn't work now.

4. I advise you to update the computer _______.

5. The machine is operated through the _______.

1. well-known 2. hard-working 3. breakdown

4. software 5. keyboard

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There are many interesting science experiments out there for young kids. You can surprise your friends and teachers with them. All you have to do is to put a little effort into it and you should have no problem coming up with an in?teresting science experiment. One such experiment is to show your friends and teachers that you can make mothballs (棒脑丸) dance!If you want to do it,first,be sure that you have got all the necessary sci?ence kits for your science experiment.

What you need for this experiment is a glass filled half full with water. Add a little bit of vinegar to your glass of water,about 1/3 or 1/4 of a cup (60 ml) ,and one teaspoon (10 ml) of baking soda,and then carefully stir the mix?ture. Drop a few mothballs into the glass and have your audience watch. As long as the surfaces of the mothballs become fairly rough,they should begin to bounce up and down in the glass.

You can also do a similar experiment with raisins (葡萄干) and clear pop,such as Sprite. In this experiment,all you have to do is to fill a glass with Sprite and drop a few raisins into it. The raisins should begin to bounce up and down in the glass of Sprite. You can also replace the raisins with mothballs and you should get the same effect in the Sprite. This project works because the irregular surfaces of the mothballs and the raisins hold some C0₂ bubbles (气泡) ，causing them to bounce up and down in a dancing motion.

1. The writer writes this passage to .

A. explain why some science experiments are easy

B. encourage people to spend more time on science

C. tell us how good he is at doing science experiments

D. teach kids how to do an easy and interesting science experiment

2. What is the most probable name of the experiment?

A. Producing mothballs.

B. Dancing mothballs.

C. Changing mothballs.

D. Swimming mothballs.

3. Which of the following things are needed in the experiment?

a. baking soda b. water c. mothballs

d. salt e. vinegar f. sugar

A. beef B. acde

C. abed D. abce

4. The underlined word "pop" in Paragraph 4 probably refers to a .

A. mothball

B. kind of vinegar

C. drink with bubbles

D. special kind of raisin

5. From the last paragraph we can know .

A. why Sprite has some C0₂ bubbles

B. what people usually use Sprite for

C. what scientists usually do with raisins

D. why the mothballs bounce up and down

7. The programme is (design) to help children who have dropped out of school because of being poor.

4. Over two thirds of the population were believed To have no access the health care in the west rural area.

对于中学生上网人们有不同的看法。请你以 Going online-为题.根据下表所提供的信息.谈谈你的看法。

能增长知识.了解Ml内外大事，紧跟

advantages 时代歩伐;有利于学习英语，能结交很多朋&

上网玩游戏影响学习，而且对视力

disadvantage's 有伤害，易受不良信息的影响

advice 适度上网；要把学习、健康和安全

放在首位等

要求：1. 可以适当添加细节，使文章连贯；

2. 100词左右;

3. 幵头巳给出，不计人总词数。 Going online Recently going online has become more and more popular with middle school students. Students have different opinions.

10. When you finish typing,remember to save your (文件) .

5. He was elected_______ monitor in our class.

2. Mother,can I have the second apple? It is so delicious！

3. 你认为他退休后会住在哪里？

Where after he retires?

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