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  • 1. 根据短文内容,选择正确答案。

    D

        Astronauts (宇航员) face many problems when living in space stations. One of them is food. People on Earth put together all the meals first and then send these meals to space stations by space shuttle. Because the food has to last a long time (sometimes up to three months), people have to store a lot of it in cans. The space station does not have a fridge, but it has a cool room to keep fruit and vegetables fresh. Astronauts also eat many other foods such as dried meat that do not need special care.

        Without the help of gravity sitting down to eat can be difficult. Astronauts sometimes have to fix themselves to the wall while eating. They also have to be very careful so that food does not float away.

    1. (1) One of the problems astronauts face is ______.

      A . light B . food C . clothes D . oxygen
    2. (2) How can people send the meals to space stations?

      A . By car. B . By train. C . By plane. D . By space shuttle.
    3. (3) People have to store the food in ______.

      A . cans B . bags C . boxes D . bottles
    4. (4) ______ help(s) to keep fruit and vegetables flesh.

      A . The space shuttle B . The fridge C . The cool room D . The cans

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