练习册

  • 练习册
  • 试题
    40． in a space ship must be much fun to you. A．To flying B．Flied C．Flying D．Fly 【查看更多】

     

    题目列表(包括答案和解析)

    As space science develops, man has learned more and more about space. Space is not only amazing but also dangerous. While working in space, spacemen are facing danger as well as success.

    Scientists have found out that the radiation（辐射） is the greatest danger to spacemen in space. When spacemen are working in space, they are in danger of the radiation from the sun and other stars, which is bad for their health. The harm of the radiation won’t be found until their children even grandchildren are born. Some special medicine may work a little, but no really effective medicine has been found so far.
    Space rubbish is also thought to be a great danger to spacemen. It’s reported that there were 9,000 man-made things flying in space. About 30% of these are satellites, 10% are spaceships, and the rest are space rubbish. An explosion（爆炸）in space in 1999 made a cloud of 300,000 fragments, each at least 4mm in size. A small piece of these even knocked a spaceship window and caused some damage（损坏）.
    Scientists are watching and reporting any possible danger all the time. They are working to deal with space rubbish. Although space is really dangerous, it interests many people on the earth. In the near future, it may become possible for people to spend a few days in a space hotel. We may even choose to leave the earth and live in space in a few years. So we should do something to help improve the space environment.
    【小题1】 ______ shows the man-made things in space in the correct way.
       
    A．B．C．D．
    【小题2】The radiation from the sun and other stars is ______ to spacemen.
    A．goodB．helpfulC．usefulD．harmful
    【小题3】 The underlined word “fragments”means “______”.
    A．碎片B．泡沫C．烟雾 D．飞碟
    【小题4】 The passage talks about _________ kinds of danger in space.
    A．twoB．threeC．fourD．five
    【小题5】 Which of the following is TRUE?
    A．Scientists have found out ways to solve any problem in space.
    B．Every one of us can have a travel to space in ten years.
    C．The harm of the radiation may be found in the spacemen’s children.
    D．Space is really dangerous, so it doesn’t interest anyone on the earth.

    查看答案和解析>>

    As space science develops, man has learned more and more about space. Space is not only amazing but also dangerous. While working in space, spacemen are facing danger as well as success.

    Scientists have found out that the radiation（辐射） is the greatest danger to spacemen in space. When spacemen are working in space, they are in danger of the radiation from the sun and other stars, which is bad for their health. The harm of the radiation won’t be found until their children even grandchildren are born. Some special medicine may work a little, but no really effective medicine has been found so far.
    Space rubbish is also thought to be a great danger to spacemen. It’s reported that there were 9,000 man-made things flying in space. About 30% of these are satellites, 10% are spaceships, and the rest are space rubbish. An explosion（爆炸）in space in 1999 made a cloud of 300,000 fragments, each at least 4mm in size. A small piece of these even knocked a spaceship window and caused some damage（损坏）.
    Scientists are watching and reporting any possible danger all the time. They are working to deal with space rubbish. Although space is really dangerous, it interests many people on the earth. In the near future, it may become possible for people to spend a few days in a space hotel. We may even choose to leave the earth and live in space in a few years. So we should do something to help improve the space environment.
    【小题1】 ______ shows the man-made things in space in the correct way.
       

    A．B．C．D．
    【小题2】The radiation from the sun and other stars is ______ to spacemen.
    A．goodB．helpfulC．usefulD．harmful
    【小题3】 The underlined word “fragments”means “______”.
    A．碎片B．泡沫C．烟雾D．飞碟
    【小题4】 The passage talks about _________ kinds of danger in space.
    A．twoB．threeC．fourD．five
    【小题5】 Which of the following is TRUE?
    A．Scientists have found out ways to solve any problem in space.
    B．Every one of us can have a travel to space in ten years.
    C．The harm of the radiation may be found in the spacemen’s children.
    D．Space is really dangerous, so it doesn’t interest anyone on the earth.

    查看答案和解析>>

     

    As space science develops, man has learned more and more about space. Space is not only amazing but also dangerous. While working in space, spacemen are facing danger as well as success.

    Scientists have found out that the radiation(辐射)is the greatest danger to spacemen in space. When spacemen are working in space, they are in danger of the radiation from the sun and other stars, which is bad for their health. The harm of the radiation won’t be found until their children even grandchildren are born. Some special medicine may work a little, but no really effective medicine has been found so far.

    Space rubbish is also thought to be a great danger to spacemen. It’s reported that there were 9,000 man-made things flying in space. About 30% of these are satellites, 10% are spaceships, and the rest are space rubbish. An explosion(爆炸)in space in 1999 made a cloud of 300,000 fragments, each at least 4mm in size. A small piece of these even knocked a spaceship window and caused some damage（损坏）.

    Scientists are watching and reporting any possible danger all the time. They are working to deal with space rubbish. Although space is really dangerous, it interests many people on the earth. In the near future, it may become possible for people to spend a few days in a space hotel. We may even choose to leave the earth and live in space in a few years. So we should do something to help improve the space environment.

    根据短文内容，选择正确答案。

    1.Of all the man-made things in space, about ________of  these are space rubbish.

    A. 10%          B.60%          C.100%      D.30%

    2. The underlined word “fragments” means “______”.

    A. 碎片         B. 泡沫         C. 烟雾      D. 飞碟

    3. The passage talks about _________ kinds of danger in space.

    A. two           B. three          C. four      D. five

    4.Which of the following is TRUE?

    A. Scientists have found out ways to solve any problem in space.

    B. Every one of us can have a travel to space in ten years.

    C. The harm of the radiation may be found in the spacemen’s children.

    D. Space is really dangerous, so it doesn’t interest anyone on the earth.

     

    查看答案和解析>>

    用方框中所给词的适当形式填空，使短文正确、通顺。每个词限用一次。
               down    part    turn    almost    dark    star    nobody    through    hours    cover
          The universe is everything out or in space. (1)              knows how big the universe is. When we
    talk about the universe, we mean the earth, the sun, the moon and the (2)             .
           Now let me tell you something about our earth. The earth is a huge ball. It (3)            round and
    round in space. Its surface (表面) is (4)              by water and land. If you are in a space plane and
    look (5)             at the earth from up in space, you will see lots of clouds over the surface of the earth. (6)             clouds you will see the blue colour of the oceans and seas. (7)             two-thirds of the
    earth is covered with water.
          We live on the outside (8)              of the earth. Around and above us is the air. The earth takes
    twenty-four (9)             to turn all the way round-that is one day and one night. When your country is
    facing (朝向) the sun, it is day-time for you. But as the earth turns you away from the sun, everything
    around you grows, (10)              .
          Can you tell me something more about the earth or the universe?

    查看答案和解析>>



    “Yes, ladies and gentlemen, welcome aboard NASA’s Space Elevator. We’re going to leave soon. The entire ride will take about five hours, so sit back and enjoy the trip. As we rise, be sure to look out the window. You’ll see the sky change from deep blue to black. It is one of the most wonderful views（景色）you will ever see! ”
    Does this sound like the Sci-Fi Channel? Well, it’s not. Scientists are thinking that a “space elevator” will be possible toward the end of the 21st century. A space elevator will consist of a long cable (电缆) from the Earth’s surface into space to an altitude(高度) of about 35,786 km. “Elevators” will travel along the cable and move people and loads between Earth and space. One of the greatest advantages is that the cost will be much less. Researchers estimate (估计) that a passenger with baggage at 150 kg might cost only $222! Compare that to today’s cost of around $3.3 million for the same weight. It would make “cheap” space travel possible. Scientists believe carbon nanotubes (纳米管) may be used to make high-strength materials for the cables, although they are still being studied.
    It was Arthur C. Clarke who brought this idea to the general public. In his science fiction novel Fountains of Paradise, engineers build a space elevator on top of a mountain peak on an island. One day, Clarke was asked a question by a student during his speech. The student asked when the space elevator would become a reality. Clarke answered, “Probably about 50 years after everybody stops laughing.” He’s got a point. When we stop thinking of something as impossible, then we start working on its development.
    小题1:Why should passengers in a space elevator look out the window while they are moving into space?
    A．Because the blue sky is very beautiful.
    B．Because the view outside is wonderful.
    C．Because the sky changes from black to blue.
    D．Because the trip will take about seven hours.
    小题2:Which of the following is NOT true according to the passage?
    A．Scientists haven’t used carbon nanotubes to make the cables.
    B．Traveling in space elevators will cost much less in the future.
    C．Passengers will be able to travel in space elevators with baggage.
    D．Space elevators will travel for 35,786 km around the Earth’s surface.
    小题3:What is the best title for this passage?
    A．Possible Now: Space TravelB．Cheap Space Travel
    C．Going into Space in an ElevatorD．Space Travel — Impossible

    查看答案和解析>>


    同步练习册答案