Now satellites are helping to forecast (预报) the weather. They are in space, and they can reach any part of the world. The satellites take pictures of the atmosphere (大气), because this is where the weather forms. They send these pictures to the weather stations. So meteorologists (气象学家) can see the weather of any part of the world. From the pictures, the scientists can often say how the weather will change.
Today, nearly five hundred weather stations in sixty countries receive satellite pictures. When they receive new pictures, the meteorologists compare them with earlier ones. Perhaps they may find that the clouds have changed during the last few hours. This may mean that the weather on the ground may soon change, too. In their next weather forecast, the meteorologists can say this.
So the weather satellites are a great help to the meteorologists. Before satellites were invented, the scientists could forecast the weather for about 24 or 48 hours. Now they can make good forecasts for three or five days. Soon, perhaps, they may be able to forecast the weather for a week or more ahead (提前).
1.Satellites travel .
A. in space B. above space
C. above the ground D. in the atmosphere
2.Why do we use the weather satellites to take pictures of the atmosphere? Because
.
A. clouds form there B. the weather forms there
C. the weather satellites can do it easily D. people like to collect these pictures
3.Meteorologists forecast the weather .
A. without studying satellite pictures
B. before they receive satellite pictures
C. when they have received satellite pictures
D. after they have compared the new satellite pictures with the earlier ones
4.Maybe we’ll soon be able to forecast the weather for .
A. one day B. two days
C. five days D. seven days or even longer
5.The main idea of this passage is that satellites are used in .
A. taking pictures of the Earth B. receiving pictures of the atmosphere
C. weather forecasting D. doing other work in many ways
Have you ever seen a person in the Moon? If you look closely at the Moon on some nights, you can see the face of a man in the Moon. Some people say that they can see an old man carrying sticks. Others see a girl reading a book. These pictures are made by the mountains and plains of the Moon.
Long ago people in England used to tell their children that the Moon was made of green cheese. Everyone knows that this is not true. The Moon is a large round rock. There is nothing on it. There are no trees or plants on the Moon. There are no rivers or seas. There are no living things. There is no air. It never rains on the Moon and everything is covered with dry, white dust. Not even a sound can be heard on the Moon.
The Moon is very hot when the Sun shines on it. But in the shade (背阴处) it is as cold as ice.
The Moon is much smaller than the Earth. It does not weigh as much as the Earth. If you went to the Moon, you would weigh six times less than you do now. Even a fat man would be able to jump high off the ground.
1.On some nights the Moon looks like______ .
A. an old man reading a book B. a star
C. mountains and plains D. the face of a man
2.The Moon is made of______ .
A. rivers and seas B. rock
C. dirt D. trees and plants
3.You can’t hear anything on the Moon because______ .
A. there are no living things on the Moon B. it never rains on the Moon
C. the Moon is a large round rock D. there is no air on the Moon
4.The Moon is______ .
A. very hot
B. very cold
C. sometimes very hot and sometimes very cold
D. covered with ice
5.On the Moon you could jump high in the air because______.
A. you would feel very happy
B. the Moon is very hot
C. the Moon is as cold as ice
D. you weigh six times less than on the Earth
三、完形填空（共10分，每小题1分）
Do you know Mars? We are always__________, “Is there life on Mars?” We all know that it is difficult for people on the Earth to live on Mars because we need water and oxygen to
_____________, but there is little oxygen on Mars.
Living on Mars seems like living on a very high mountain. There is very thin__________. It might be 20 degrees above zero at noon and 60 degrees below zero__________.
A lot of people think there may be plants on Mars. We know that Mars has carbon. This is a kind of material__________in all plants and animals on the Earth. Through a telescope (望远镜), Mars looks red. In some places, it seems grey. At times the grey colour turns grey-
green, then brown, and then grey again. The grey-green colour may be a kind of ___. Life changes colour _________the seasons. At first scientists thought the red planet was as ________ as the Moon with dust storms blowing over the large sandy deserts. But Mars seems not as
______________as we once believed it to be. According to an analysis (分析) on the recent Mars
pictures, NASA (美国航空航天局）announced in September 28, 2015 that there is__on Mars. If that’s true, there will be hope of finding life on Mars.
1.A. talking B. wondering C. knowing D. telling
2.A. drink B. eat C. live D. breathe
3.A. air B. earth C. oxygen D. gas
4.A. at night B. in the daytime C. in the morning D. in the afternoon
5.A. seen B. heard C. called D. found
6.A. animal B. plant C. earth D. people
7.A. for B. by C. along D. with
8.A. lifeless B. hopeless C. cool D. hard
9.A. cold B. hot C. dry D. wet
10.A. water B. ice C. plants D. life
—I want to know book it is.
—Oh, it’s Xiao Wang’s.
A. who B. whether C. whose D. which
it is to play this computer game.
A. How fun B. What a fun C. What fun D. How a fun
The book is written by the man you saw yesterday in the library.
A. which B. that C. where D. when
