2. 外语
  3. The author’s main purpose in writing the article is to warn of______. What will happen if the dust aerosol layer develops?

The author’s main purpose in writing the article is to warn of______. What will happen if the dust aerosol layer develops?

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问题 The author’s main purpose in writing the article is to warn of______.
What will happen if the dust aerosol layer develops?
选项 A、The earth will get extremely hot.
B、The balance between the amount of heat absorbed from the Sun and the amount lost could hardly be maintained.
C、The light of the Sun could no longer reach the surface of the Earth.
D、Infrared radiation could no longer be transmitted from the Earth to outer space.
答案B
解析 选用“dust aerosol layer浮尘层”为答案线索词，在第4段第2句中找到答案相关句 build up(堆积)对应develop，所以答案为B。
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