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问题: 模拟卷10-32

Many people fail to realize that teaching is an art,_______ needs careful training of a special kind and great patience to deal with different students with different personalities.
A.that B.whatever C.which one D.one that
请详细写出解题的过程和思路。

解答:

答案选D。

这里one作teaching的同位语,同时也是后面一个定语从句的先行词,而that是引导定语从句的关系代词,在从句中作主语。

A:that不能引导非限制性定语从句(注意逗号)。
B:含义不通
C:成分混乱 如果把which看成是引导定语从句的关系代词,它要在从句中作主语,那么one就显得多余了。