__________knowledge comes from practice is known to all.


  1. A.
    If
  2. B.
    What
  3. C.
    Where
  4. D.
    That
D
試題分析:考查主語從句:分析句子可知is是謂語,前面的句子是主語從句,因為主語從句是完整的句子,用that連接主語從句,而且不可以省略,句意:知識來自于實踐是眾所周知的。選D。
考點:考查主語從句
點評:主語從句是在復(fù)合句中充當(dāng)主語的從句,通常放在主句謂語動詞之前或由形式主語it代替,而本身放在句子末尾。解答這類題目,關(guān)鍵在于分析清楚句子結(jié)構(gòu)。通過判斷引導(dǎo)詞在從句中所作的成分及意義,來選擇正確的引導(dǎo)詞。連接主語從句的從屬連詞主要有that, if, whether,和疑問詞(what how where when ...)。that引導(dǎo)表示陳述句的主語從句,if和whether,whether...or not引導(dǎo)表示“是否”,引導(dǎo)一般疑問句。連接代詞主要有who,whom, whose, what, whoever, whomever,whosever,whatever,whichever等。連接代詞一般指疑問,但what, whatever除了指疑問外,也可以指陳述。
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