第八篇： Error Correction (15 minutes)
Some people, in all seriousness, say that
humans will be living in space within the next
hundred or so years. Planet Earth will be crowded,
dirty and lack of resources. A sort of exodus --71.
of mankind will begin.
Spaceships will be assembled so that they
revolve around the earth. Some may orbit around
Mars. These space stations will be serviced by
space buses. We saw the first space bus launch in --72.
April 1981. This was "Columbia", it made several --73.
orbits around the earth and then returned, landing
on a huge dry lake bed in California. "Columbia"
will be used again. Previous spaceships have
been abandoned, only the nose cone being used
to bring the crews back to earth. --74.
Upon established, each space station will --75.
generate its own atmosphere and have its own
agriculture. It will need to rotation to provide --76.
an artificial gravity; people will be forced inwards --77.
from the center by centrifugal force.
The moon and Mars could become new sources of
new materials. Driving through space will no --78.
longer need Earth fuel- the energy would come
from the sun. This energy would be converted from --79.
electricity to work magnetic rockets.
That all sounds quite fantastically but, with --80.
the rapid development of moderns technology, who
knows about what the future holds?答案：
71. lack--short
72. launch--launched
73. it--which
74. crews--crew
75. upon--once
76. rotation--rotate
77. inwards-outwards
78. will--would
79. from--into
80. fantastically--fantastic
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