2. 外语
  3. The temperature at the center of the Sun is much higher than it is at the surface. The corona rays become weak and invisible wh

The temperature at the center of the Sun is much higher than it is at the surface. The corona rays become weak and invisible wh

admin2009-06-15  64
问题 The temperature at the center of the Sun is much higher than it is at the surface.
The corona rays become weak and invisible when they reach the Earth, because the Earth is far away from the Sun.
选项 A、Right
B、Wrong
C、Not mentioned
答案C
解析 文中提到“The rays of gas thin out as they reach the space around the planets，但没有提及是否因为距离远的缘故。
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