Astronauts have already visited the moon and lived on space stations. They' ve never been to another planet, but they might visit Mars soon. The astronauts will spend about six months traveling to the 题目和参考答案——青夏教育精英家教网—

题目内容

Astronauts have already visited the moon and lived on space stations. They' ve never been to another planet, but they might visit Mars soon. The astronauts will spend about six months traveling to the planet, then about two years on the planet and about six months traveling back to the earth. They' ll be away from the earth for about three years, so they' 11 need a lot of food !

It' s very expensive to take food into space. It costs about 120,000 dollars to carry something that weighs one kilogram. So an apple on Mars could cost 20,000 dollars! Of course, they will need to take quite a lot of food with them to feed the astronauts for three years. This amount of fresh food can not stay fresh, and is very expensive to take, so they need to find food that is not very heavy.

At the moment, astronauts on space stations eat dried food. It's very light, so it doesn't cost a lot of money to carry it into space. But astronauts stay healthier and happier if they eat fresh food. In the future, astronauts on Mars may grow vegetables like lettuce, spinach and carrots.

Astronauts on Mars will probably have special machines. They' ll use these machines to change beans into foods that taste like meat or cheese because it won' t be possible to keep animals in space.

1. The astronauts plan to go to next.

A. the earth B. the moon C. Mars D. space

2. Why do the astronauts have to eat dried food?

A. Because it is safe. B. Because it makes them happy.

C. Because it is cheap to buy. D. Because it is cheap to carry.

3. What may astronauts do in the future?

A. Take enough fresh food for their journey.

B. Grow some fresh vegetables on Mars.

C. Keep animals in space.

D. Grow food on their space stations.

4. Which of the following is TRUE according to the passage?

A. It will take the astronauts six. months to get to a planet.

B. If we take two kilograms of apples into space, it could cost 40,000 dollars.

C. Dried food is as healthy as fresh food for astronauts in space.

D. Astronauts will get foods that taste like meat or cheese from beans on Mars.

5. The best tide for this passage is

A. Food in Space B. An Important Planet

C. Vegetables in Space D. Astronauts in the Future

CDBDA

练习册系列答案

相关题目

Eileen Collins is the first woman ever chosen to be a spaceship pilot. She is also the first woman to command(指挥) a spaceship. Today she has flown more than 5, 000 hours in more than 30 kinds of airplanes.
Talking about high school, she said, “I began reading all kinds of books about famous women pilots. These women went and flew into dangerous places. Their stories encouraged me.” In 1977 Eileen got a pilot’s license and the following year she graduated from university. She went into space in 1999 at the age of 43. She took with her the hopes and dreams of a nation of young people on the earth.
Eileen is not only an astronaut but also a wife and the mother of a young daughter. She has short curly hair and friendly brown eyes. She met her husband, Pat, while they were together in the air force(空军).
When she was named as the First Woman Spaceship Commander in 1998, Eileen smiled and said, “When I was a child, I dreamed about space. It was only a dream that I would be one of the astronauts someday. I hope all children will be encouraged to reach for their dreams, when they see I go into space. I believe dreams do come true!”
【小题1】How many hours has Eileen flown?

【小题2】When did Eileen go into space?

【小题3】What does Eileen look like?

【小题4】Who did Eileen meet in the air force?

【小题5】Did Eileen believe that her dream would come true?

People have always wondered about the moon. Thousands of years ago, people studied the moon and used it to keep track of time. Later, people invented instruments such as telescopes so that they could see the moon more clearly and learn about it.

With advances in technology, people were able to learn more about the moon. In the mid-1900s, scientists sent up rockets that could explore the moon’s surface. Later, astronauts actually went to the moon. They sent lots of information about the moon back to the earth. As a result of all this moon exploration, the moon is no longer as great a mystery as it once was.

Fill in the blanks according to the passage. Only one word for each blank.

根据短文内容填空（每空一分，共5分）

Long, long ago people were very 1.i _______ in the moon. They watched at the moon for2._s______ a long time that they got to know more and more about it and they even invented a machine 3._c______ a telescope. They could see the moon more clearly with it. In the middle of the 4.t_______ century people could set up rockets to the moon. In this way, people for the first time 5.__l______ on the moon and took some information back to the earth. So scientists know much more about the moon now.

Eating in space is different from eating on the earth. The food that astronauts carry with them does not look like the food you eat.

Some food is carried in closed bags. It is cooked and frozen before the astronauts get it. All the water is removed from the food. In the spaceship, the astronaut puts the water back. He “shoots” hot or cold water into the food bag with a special gun. He eats the food through a small hole in the bag.

Other foods come in bite sizes. The astronaut puts a whole piece in his mouth at once. There can be no crumbs. Crumbs would float around the spaceship and get in the way. Meat and cakes often come in bite-size pieces.

Astronauts cannot drink water from open cups. The water would float in drops in the spaceship. The water is put in the special gun. The astronaut shoots the water into his mouth.

1.Some food carried in the closed bags by astronauts is ________.

A. cooked and frozen B. full of water C. raw

2.Astronauts can’t drink from open cups because__________.

A. the water would float in drops around the spaceship

B. the water would spill all over their foods

C. crumbs would float in the cups

3.The main idea of the passage is that __________.

A. astronauts cannot eat or drink in a spaceship until they come back to the earth

B. eating and drinking in the spaceship is a special problem

C. there is more food and water in space than on the earth

There are few families in the United States that do not have either a radio or television set. Both of them have become a necessary part of our daily life, keeping us filled with the news of the day, teaching us in many fields of interest, and making us happy with singing, dancing and acting.

Marconl, the Italian inventor, who gave us the radio, probably didn’t know how much his great invention would have done for the world in the years to come. Radio had, perhaps done as much as any other communication tool. Things of the world can be reported to people everywhere a few seconds after they happen. Travelers in or out of–the–way places, ships at sea even astronauts round the earth are able to keep in touch with each other by radio.

Television is another important invention. It lets us see as well as hear the actor. Since its appearance, TV has done a great deal in the daily life of people everywhere. Many programs are now televised in color.

Perhaps the most modern invention is “Telstar”, a “star” moving round the earth. It makes it possible for the people all over the world to be closer than ever before. Now a family in Chicago can watch on TV a motor–car race in Italy, a table tennis competition in Beijing or a volleyball match in Japan as these events are actually happening!

1.The passage tells us that __________ in the U.S.A. have no radio or television set.

A. few families B. all the families C. many families D. a few families

2.Who do you think the writer of the passage is?

A. An Italian. B. A Japanese. C. An American. D. A Chinese.

3.Why does the passage say radio and TV have become a necessary part of our daily life?

A. Because they have touched nearly everything in our life.

B. Because men would not live happily without them.

C. Because they are the only ways to spread information.

D. Because no communication means no life.

4. What is a “Telstar” used to do according to the passage?

A. To receive and store information only.

B. To move around the earth just like the moon.

C. To give light onto the earth at night.

D. To help send out radio or TV information to the world.

5. When the writer introduces Marconl in the second paragraph, he means __________.

A. he was just an Italian inventor

B. his invention has done much for the world

C. he had reported much to people all over the world

D. he helped people travel a lot around the world

试题分类