2. 外语
  3. The sun rises in the east and sets in the west, so it seems as if the sun ______ round the earth.

The sun rises in the east and sets in the west, so it seems as if the sun ______ round the earth.

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问题 The sun rises in the east and sets in the west, so it seems as if the sun ______ round the earth.
选项 A、circles
B、should circle
C、was circling
D、were circling
答案D
解析 考查虚拟语气。as if／though引导的虚拟从句中，谓语动词虚拟式的变化要根据对过去、现在、将来等不同的假设选择适当的动词虚拟式。题中是对现在事实的虚拟，太阳并不绕着地球转，故用过去时，由于谓语是be动词，对现在的虚拟要用were形式，答案为D。
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