2. 职称英语
  3. Although we are not sure why we sleep, there is no doubt ______ we need to do so

Although we are not sure why we sleep, there is no doubt ______ we need to do so

游客2024-02-15  77
问题 Although we are not sure why we sleep, there is no doubt ______ we need to do so.
选项 A、whether
B、why
C、what
D、that
答案 D
解析 尽管我们不确定睡觉的原因，但毫无疑问我们需要这样做。There is no doubt that…为固定句型，意为“毫无疑问……”。
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