On April 2， we said goodbye to Tiangong I， China's first space lab． According to the China Manned Space Agency （中国载人航天）， Tiangong I re﹣entered the Earth's atmosphere （大气层） and some of its debris （碎片） fell into the South Pacific Ocean．
There are many spacecraft （宇宙飞船） that are still in orbit （轨道） above the Earth． After finishing their trips， they will all re﹣enter the Earth's atmosphere like Tiangong I．
There are two types of re﹣entries： controlled re﹣entry and uncontrolled re﹣entry．
Some satellites and manned spacecraft come back to the Earth in a controlled re﹣entry． Experts calculate （计算） the path of the falling spacecraft and its speed． Thy can guide the spacecraft to fall in a chosen area．
Some spacecraft may have problems while in space after a certain amount of time． These spacecraft come back in an uncontrolled re﹣entry． It is hard to tell when and where these spacecraft will fall until the last few hours． The US space station Skylab came back partially uncontrolled in 1979． Parts of the station fell in western Australia， but no one was hurt．
During re﹣entry， most of the spacecraft will burn up while passing through the Earth's atmosphere． Only a small amount of the debris will reach the ground． The debris typically ends up falling into the ocean， China Daily reported．
（1）The debris from Tiangong I ．
A． fell into the South Pacific Ocean
B． fell in western Australia
C． fell in the central part of the US
D． fell into the North Pacific Ocean
（2）When the spacecraft finishes its trip， it will ．
A． burn up and disappear
B． speed up and fly back to the Earth
C． enter another orbit and stay in space
D． re﹣enter the Earth's atmosphere
（3）From the passage， we know there are types of re﹣entries．
A． one
B． two
C． three
D． four
（4）Which of the following is TRUE about the US space station Skylab？
A． It came back in a controlled re﹣entry．
B． Some people were hurt by its debris．
C． Parts of it fell in western Australia．
D． It was directed to fall into the ocean．
（5）This story most probably comes from ．
A． a story book
B． a movie review
C． a science magazine
D． a government report
阅读下面短文，根据短文内容完成表格中所缺信息，每空一词。
In common with many countries, Britain has serious environmental problems. In 1952, more than 4,000 people died in London because of the smog. The government introduced new laws to stop smog from coal fires and factories and the situation improved a lot.
Today, London is much cleaner but there is a new problem: smog from cars. In December
1991, there was very little wind in London and pollution increased a lot. As a result, about 160
people died from pollution in just four days.
Part of the problem is the new ‘out of town’ shopping centres. In the past, people often walked to shops near their home or went by bus. Now, many people drive to the new shopping centres. As a result, the small shops have disappeared and more people have to travel to do their shopping.
Critics say that Britain needs better and cheaper public transport. Transport in Britain is very expensive. An early morning train trip from Glasgow to London (about 600km) can cost about
￡100, for example. A short 15-minute bus trip can cost over ￡1.00.
Many people are trying to reduce the use of cars in Britain. Some cities now have special bicycle paths and many people cycle to work. Some people also travel to work together in one car to reduce the pollution and the cost.
Environmental inBritain
| Time |
Causes |
|
Solutions |
| In the |
Smog |
|
New laws were |
| Today |
Smog caused by |
About 160 people |
★ Provide better and ★ Build special paths for bicycles. ★ Travel to work |
Saturday morning was bright and fresh. There was a song in every heart, cheer on every face, and a spring in every step.
Tom appeared with a bucket of white paint in one hand and a brush in the other. His Aunt Polly told him to paint the fence around the garden. It was thirty yards long and nine feet high. He felt very depressed.
Then he had a wonderful idea. He picked up his brush and started to work.
Soon Ben came along the road. He was happily eating an apple. He stopped to look at Tom. Tom went on painting and pretended（假装）not to see Ben.
“I’m going swimming,” said Ben. “Do you want to go swimming, Tom? But I guess you can’t. You have to stay and work, don’t you?”
“Work?” Tom said. “This isn’t work. I’m enjoying myself. Does a boy get a chance to paint a fence like this every day?”
Ben thought about this. Tom continued painting carefully. Sometimes he stopped, stood back to look at the fence like an artist, and then added a bit more paint in just the right place. Ben was watching Tom paint with great interest. He was getting more and more eager to have a try himself.
After a while, Ben asked Tom if he would let him paint a little. Tom thought about it, and said,
“No, Ben, I can’t. You see. Aunt Polly wants it to be done well. Aunt Polly said that I must paint it with great care.”
“Oh, please, Tom,” begged Ben. “I can do it. I’ll be really careful. Just let me try. I’ll give you half of my apple. Well, I’ll give you all of it!”
“Well, all right, Ben,” said Tom. “You must be very careful.”
He gave Ben his brush with worry on his face but joy in his heart. He sat down under the tree, and started to eat Ben’s apple. All day, boys came to make fun of Tom, but they ended up staying to paint. When Ben got tired, Billy was waiting. He gave Tom a kite for a chance to paint. Then Johnny offered him twelve marbles, and so on.
By late afternoon Tom had gained all sorts of toys, and the fence had gained three coats of paint. Later Aunt Polly came to look at the painted fence. She was so pleased with Tom’s work that she gave Tom a large cake!Why did Tom pretend not to see Ben when he came and watched him painting?
| A．He saw Ben eating an apple happily. |
| B．He tried to make Ben interested in it. |
| C．He didn’t want to go swimming with Ben at all. |
| D．He didn’t want Ben to share the chance to paint the fence. |
What do the underlined words “spring” and “coat” probably mean in the passage according to the given dictionary entries （词条）?
spring
1 [U,C]the season between winter and summer when plants begin to grow 春天；春季
2 [U]the ability of a spring to return to its original position 弹性；弹力
3 [C]a place where water comes naturally to the surface from under the ground 泉
4 [U]a cheerful, lively quality 活力；朝气
coat
1 [C]a piece of clothing with long sleeves that you wear over other clothes when you go outside 外套
2 [C]the fur or hair on an animal’s skin
（动物的）皮毛
3 [C]a layer of something such as paint that you put onto a surface覆盖层；涂层
| A．4;3 | B．4;2 | C．3;3 | D．1;3 |
Which of the following is TRUE according to the passage?
| A．Tom gained some toys by helping his friends. |
| B．Tom’s friends often helped him paint the fence. |
| C．Tom successfully tricked his friends into painting the fence. |
| D．Billy was the fourth boy to have the chance to paint the fence. |
What do you think of Tom?
| A．He was honest. | B．He was smart. | C．He was shy. | D．He was stubborn. |
1. Where are the rainforests?
Rainforests cover six per cent of the Earth’s surface. There are rainforests in many parts of the world but the biggest forests are in South America, Africa and South East Asia. There aren’t any rainforests in Europe or North America.
2. What’s in the rainforests?
About 75% of all the types of animals that we know come from rainforests. Thousands and thousands of animals live in rainforests. There are many very beautiful birds, insects and reptiles. Many of them live in the trees, more than 30 metres from the ground. There are also thousands of different plants—and lots of tall trees! It is always hot in a rainforest and
the ground is always wet. It is also dark.
3. Why are the rainforests important?
The rainforests are very important for us. We need them! The trees and other plants in the forest help to make the air that we breathe. They give us wood, rubber, fruits and many of our medicines.
4.
Unfortunately, in many places, the rainforests are in danger. For example, many years ago there was a large rainforest in Java. There were thousands of different plants and animals in the forest, but now there is nothing. People chopped down the trees because they wanted to grow rice. Many animals lived in the rainforest. Some of them went to other parts of Java but many of them disappeared — forever. The same thing is happening now in many other parts of the world. The rainforests are in danger.In which of the following places can we find rainforests according to Paragraph 1?
A. In the UK. B. In Asia. C. In the USA. D. In France.Which of the following belongs to a kind of “reptile”?
| A．A sparrow. | B．A swallow. | C．A snake. | D．A butterfly. |
Which might be the best title for Paragraph 4?
| A．What’s happening to the rainforests? |
| B．What can we find in the rainforests in Java? |
| C．Why did people chop down the trees in the rainforests? |
| D．Why did many plants and animals disappear in the rainforests? |
What is the writer’s purpose of writing the article?
| A．To tell us how to survive in the rainforests. |
| B．To help us know some living things in the rainforests. |
| C．To tell us to care about the protection of the rainforests. |
| D．To give us advice on how to make full use of the rainforests. |
Doing experiments can be interesting, and you may try the following experiments at home. Make sure that you’ll do them with an adult.
How many experiments are there in the pictures?
| A．Six. | B．Five. | C．Three. | D．Two. |
The following are the instructions on how to do “Step 2” in these experiments. Which one is the right order?
a. Pour 3/4 of the water away.
b. Put a balloon on the bottle.
c. Put the bottle in a bucket of hot water. The air rises into the balloon.
| A．a, b, c | B．a, c, b | C．b, a, c | D．c, a, b |
What can you see in the bottle at last in Experiment A?
| A．Some ice. | B．Some water. |
| C．Some ice and water. | D．A cloud and some water. |
What will happen to the balloon in “Step 3” in Experiment C?
| A．It will be bigger. | B．It will be broken. |
| C．It won’t change. | D．It will be in the bottle. |
A wise man used to go to the ocean to do his writing. He had a habit of walking on the beach every morning.
One day, when he was walking along the shore（海岸）, he saw a young man moving like a dancer. He smiled to himself at the thought that someone would dance on the beach. So he began to walk faster to catch up.
As he got closer, he saw that the young man wasn’t dancing, but instead he was reaching down to the shore, picking up something and very gently throwing it into the ocean.
He called out, “Good morning! What are you doing?” The young man stopped, looked up and replied, “Throwing starfish in the ocean.” “I guess I should have asked, why are you throwing starfish in the ocean?”
“The sun is up and the tide（潮汐）is going out. And if I don’t throw them in, they’ll die.”
“But, young man, don’t you realize that there are miles and miles of beach and starfish all along it. You can’t possibly make a difference!”
The young man listened politely. Then he bent down, picked another starfish, and threw it into the sea, and said, “It made a difference for that one.”
There is something very special in each and every one of us. We have all been gifted（赋予）with the ability to make a difference.
We must each find our starfish. And if we throw starfish wisely and well, the world will be better.What was the wise man used to doing every morning?
| A．Taking a walk on the shore. |
| B．Watching the young man dance. |
| C．Meeting up with the young man. |
| D．Helping the young man pick up starfish. |
Why did the young man throw the starfish into the ocean?
| A．To have fun. | B．To study starfish. |
| C．To feed some fish. | D．To save starfish. |
What can we learn from the story?
| A．Each of us should learn to protect starfish. |
| B．People living on the shore always try to save starfish. |
| C．Each of us has the ability to make an important effect on something. |
| D．People can come up with some good ideas when walking on the shore. |
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