The space station spins slowly in ________ space to imitate ________ pull of the earth’s gravity


  1. A.
    the; /
  2. B.
    /; the
  3. C.
    /; /
  4. D.
    the; the
B
解析：
考查冠詞，第一空不填，in space在太空，第二空填the，指的是地球重力的影響，句意是：太空站在太空慢慢地旋轉(zhuǎn)，模仿地球重力的影響。選B。
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For centuries people dreamed of going into space. This dream began to seem possible when high-flying rockets were built in the early 1900s.

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Information concerned

Early 1900s

High-flying rockets were built.

It made the ancient dream of going to space possible to come 66)  ▲  

1903

Konstantin Tsiolkovsky (67) ▲  out a way to use rockets for space travel.

He planned to put correct scientific calculation to use in rocket science.

Around (68) ▲

Robert Goddard built new rockets.

The rockets could fly very (69) ▲ in the sky.

During and after World War II

German scientists built large rockets that could travel very far and carry dangerous explosives.

Germany was ahead of all the other countries in building space rockets and later it (70)   ▲   the Soviet Union and the United States

The Soviet Union and the United States competed to get to space first.

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1969

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1970s

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Astronauts can live and work in space stations.

1980s--

Space shuttles are used as new vehicles for space (75)  ▲   .

Shuttles are also used to help put satellites into space.

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