The smart phone benefits us a lot, but the bad effect __________ has on the youth can not be ignored.A.that B.whichC.it D.one
The smart phone benefits us a lot, but the bad effect __________ has on the youth can not be ignored.
A.that
B.which
C.it
D.one
B.which
C.it
D.one
参考解析
解析：考查复合句及代词知识。句意：智能手机使我们受益很多，但是它对青少年们的不良影响不可忽视。此处填人it，代替前面已提到的事物the smart phone，以避免重复。此处相当于省略了关系代词that的定语从句“the bad effect(that)it has on the youth”。that，it与one三者均可代替前面提到的事物，区别是：0ne表示泛指，that和it表示特指。that与所指名词为同类，但不是同一个．而it与所指名词为同一个，另外从句中明显缺少主语．it作主语很恰当。which也可指物，一般用于引导非限制性定语从句。故选C。
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