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3.Our teacher told us that light much faster than sound does.

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2.The of our country makes us feel excited.

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B用所給單詞的適當(dāng)形式填空。(10分) 


    discuss,    travel,  develop,  design,   live 


1.Do you believe that by the year 2050 many people on Mars?

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5.We (probable) need a power pack.

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4.It’s (possible) for Jim to catch up with his classmates because he never studies hard.

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3.I want a (sleep) bag for the coming trip.

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2.There will be less (pollute) on Mars than on Earth.

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B用括號(hào)中所給詞的適當(dāng)形式填空。(10分)

1.I never think about (travel) into space.

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5.D food can be stored for a very long time and doesn’t go bad.

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4.We may need to wear special boots because of the problem of (重力) .

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