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《完形填空之词语辨析》麻雪玲
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67. The sky looks black if ______.
A. you ride in a rocket
B. the rocket is high in the sky
C. the rocket is high above the earth
D. there is no air to scatter the sunlight
68. Sometimes the sky doesn't look blue because ______.
A. the sun is rising B. the sun is setting
C. the air has different colors
D. the light from the sun is scattered in a different way
69. A good title for this passage would be _______.
A. The Sky Looks Blue
B. Why the Sky Looks Colorful
C. The Beautiful Sunlight
D. Something About the Air