The traditional view is ________ we sleep because our brain is“programmed”to make us do so.


  1. A.
    When
  2. B.
    why
  3. C.
    whether
  4. D.
    that
D
句意:傳統(tǒng)的觀點是:我們睡覺是因為我們的大腦被預(yù)囂使得我們這樣做。此題考查連詞引導(dǎo)表語從句。表語從句是名詞性從句之一,連詞的使用要以連詞在從句中所充當(dāng)?shù)某煞侄ǎB接代詞在從句中作主語、表語、賓語,連接副詞在從句中作狀語,但that, whether, as if, because在表語從句中不充當(dāng)成分,此表語從句中不缺成分,故選D。
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