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《完形填空之词语辨析》麻雪玲
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The sky usually looks light blue. But if you went to the top of the highest mountain， went to the top of the highest mountain， where there is less air between you and the sun to scatter the sunlight， the sky would be deep， dark blue. And if you rode in a rocket high above the earth， where there is no air at all to scatter the sunlight， the sky would be so dark that it would be black. Sometimes the sky doesn't look blue. At sunrise and sunset， the light from the sun sometimes is scattered in such a way that you see red， orange， and other colors in the sky. 65. The sky usually looks light blue because _____. A. the sun is light and blue B. the air is light and blue C. the air scatters the sunlight D. the sunlight is blue 66. The sky looks dark blue when _____. A. there is less air between you and the sun B. there is high mountain C. the mountain is highest D. you climb a mountain
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