2. 外语
  3. Several centuries ago people did not believe that the earth______round the sun.

Several centuries ago people did not believe that the earth______round the sun.

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问题 Several centuries ago people did not believe that the earth______round the sun.
选项 A、revolved
B、had revolved
C、revolves
D、has been revolving
答案C
解析 本题考查动词的时态。据题意，几个世纪前人们不相信地球绕着太阳转。虽然时间状语是过去，但"地球绕着太阳转"是自然规律，所以仍然用一般现在时。
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