A woman was collecting money for a church charity. The money she collected was going to be given to poor children who had no parents to take care of them. She went from apartment to apartment and from house to house. She knocked on doors and asked for money. She always said the same thing. “Good morning, I’m collecting for a church charity. Please give generously. We need $5,000.” Then she held out a collecting box. Most people put a few coins in the box. An artist lived in one of the apartments. He opened the door. “Good morning.” she said. “I’m collecting for a church charity. Please give generously. We need $5,000.” The artist thought for a moment, then he said, “I’m sorry, but I don’t have any money. However, I’ll give you a painting. It’s worth $ 400.” The woman thanked the artist and took the painting away. A week later she called on him again. “I’m sorry to trouble you again,” she said, “but we still need more money. I need another $ 100. Can you help?” “Of course,” the artist said. “I’ll increase the value of my painting to $ 500.”

1.Who was the woman collecting money for?

A．Poor children.      B．Herself.           C．Her friends.        D．A church.

2.What did most people give her?

A．A lot of money.     B．A few dollars.       C．Paintings.          D．Very little money.

3.Why didn’t the artist give money to her?

A．He was not a generous man.

B．He did not have any money.

C．He had too many paintings.

D．His paintings were worth a lot of money.

4.Did the woman collect enough money at last?

A．No, she didn’t.                        B．Yes, she did.

C．We don’t know.                       D．Yes, she does.

5.How much money does she need?

A．$5,000           B．$5,00             C．$4,00            D．We don’t know.

Scientists are very interested in the Universe，and they always want to know more about it. Years ago they knew many things about the moon. They knew how big it is and how far away it is from the earth. But they wanted to know more about it. They thought the best way was to send men to the moon. The moon is about 384,000 kilometers away from the earth. A plane cannot fly to the moon because the air reaches only 240 kilometers away from the earth. But something can fly even when there is no air. That is a rocket(火箭)

How does a rocket fly? There is gas（气体） in the rocket. When the gas is made very hot inside the rocket, it will rush out of the end of the rocket, so it can make the rocket fly up into the sky. Rockets can fly out into space. Rockets with men in them have been to the moon. Several rockets without men in them have flown to another planet(行星) much farther away than the moon. One day, rockets may be able to go to any place in space.

1.Scientists knew ____________ the moon is.

A: how far    B: how big    C: how old    D: both A and B

2. The earth is about 384,000 kilometres away from the _____.

A: space    B: universe    C: sun   D: moon

3.A plane cannot fly to the moon because ___________

A: there is no air above 240 kilometers away from the earth.

B: there is no gas in the plane

C: the plane is not strong enough

D: the plane can not fly a long way

4. The hot gas in the rocket is used for___________

A: keeping the air in the rocket fresh(新鲜的)

B: Keeping the men in the rocket warm

C: making the rocket fly up.

D: cooking food for the men

5. What is the writer’s attitude(态度) to the universe’s future.

A: Realistic(现实的)         B: Imaginative(幻想的)

C: Confident(有信心的)      D: Sad

Scientists are very interested in the Universe，and they always want to know more about it. Years ago they knew many things about the moon. They knew how big it is and how far away it is from the earth. But they wanted to know more about it. They thought the best way was to send men to the moon. The moon is about 384,000 kilometers away from the earth. A plane cannot fly to the moon because the air reaches only 240 kilometers away from the earth. But something can fly even when there is no air. That is a rocket(火箭)
How does a rocket fly? There is gas（气体） in the rocket. When the gas is made very hot inside the rocket, it will rush out of the end of the rocket, so it can make the rocket fly up into the sky. Rockets can fly out into space. Rockets with men in them have been to the moon. Several rockets without men in them have flown to another planet(行星) much farther away than the moon. One day, rockets may be able to go to any place in space.
【小题1】Scientists knew ____________ the moon is.
A: how far    B: how big    C: how old    D: both A and B
【小题2】 The earth is about 384,000 kilometres away from the _____.
A: space    B: universe    C: sun   D: moon
【小题3】A plane cannot fly to the moon because ___________
A: there is no air above 240 kilometers away from the earth.
B: there is no gas in the plane
C: the plane is not strong enough
D: the plane can not fly a long way
【小题4】 The hot gas in the rocket is used for___________
A: keeping the air in the rocket fresh(新鲜的)
B: Keeping the men in the rocket warm
C: making the rocket fly up.
D: cooking food for the men
【小题5】 What is the writer’s attitude(态度) to the universe’s future.
A: Realistic(现实的)         B: Imaginative(幻想的)
C: Confident(有信心的)      D: Sad

You can’t see any object unless light from that object gets into your eyes．Some of the things you see give off light of their own。The sun，the stars，a lighted lamp are the examples that can be seen by their own light．But most of the things you see are not giving off light of their own．They are just reflecting(反射)light that falls on them from the sun or some other luminous bodies．The moon，for example，doesn’t give off any light of its own．It is not 1uminous．You see it because sunlight falls on it and some of the sunlight reflects on the earth．So moonlight is only second—hand sunlight．
When you look at a book，it sends some of the light which fails on it to your eyes，and you see the book．If light could be kept out from where you’re so that there would be no light from the book to reflect．Then you couldn’t see the book even with your eyes wide open．Light travels so fast that the time in which it travels from the book you’re reading to your eyes is as short as if there were no time at time．Light reaches us from the moon，which is about 380，000 kilometres away，in only a little more than a second．
【小题1】You can see the book because________．

In old times，man considered lightning to be one of the great mysteries（神秘事物）of nature．In fact a single flash of lightning 1.6 kilometers long has enough electricity to light one million lamps．
The American scientist，Benjamin Franklin，was the first to suggest that lightning is in fact electricity formed between the earth and clouds high above．It happened in 1752．In the same year，he also built the first lightning rod（避雷针）to protect buildings from being struck by lightnings．
Modern science has discovered that lightning is very strong and powerful．A lightning between a cloud and the earth may be as long as 13 kilometers，and travels at a speed of 30 million meters per second．Scientists have the opinion that there are about 2000 million flashes of lightning per year．In the United States alone，it kills almost one person per day．
The safest place to be in during an electrical（电的）storm is a closed car．Outside，one should go close to low ground for cover and not stop under a tree．Also one should stay out of water and away from metal fences．Inside a house people should keep away from open doorways and windows and not touch wires or metal things．
【小题1】From this passage we know lightning is____．