Scientists would like to place a huge mirror in space above the earth. It might be sixty miles wide. It would be used to catch the rays of the sun. It would direct the sun’s rays upon the earth as a child might do to make sunlight dance on the wall with a hand mirror.
Why do they want to do this? The sun’s rays could be helpful in many ways. They could light up cities by night. The warm rays could stop frosts which might come at night and hurt fruit crops. They could melt dangerous icebergs in the ocean. Perhaps they could hang cloud movements and bring rain where it is needed.
1. The huge mirror would _________.
A.stand 60 miles in height. B.be 60 miles from side to side
C.cover 60 miles above the earth D.be 60 miles above the earth.
2. The strong light from the mirror could possibly _________.
A.hurt fruit crops B.set fire to cities
C.bring longer daytime D.shine brighter than the moon
3. The huge mirror is __________.
A.something in a story B.is being made
C.just an idea D.to be made soon.
BCC
A. Profits enlarging B. Technology developing C. Education investing D. Benefits transferring E. Dominance disappearing F. A nation rising |
The following is an imaginary diary entry written by US president. This diary is part of Global Trends 2025, which was written by the US National Intelligence Council
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The
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The
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Global wealth and economic power will shift from West to East.
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The transition from old fuels to new will be slow, as will the development of new technologies that present feasible alternatives to fossil fuels or help eliminate food and water problems. All current technologies are inadequate, and new ones will probably not be commercially possible by 2025