We live in an age____more information is available with greater ease than ever before. ...We live in an age____more information is available with greater ease than ever before. A. why B. when C. to whom D. on which 答案为B 解释

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We live in an age____more information is available with greater ease than ever before. ...We live in an age____more information is available with greater ease than ever before.            A. why  B. when   C. to whom D. on which   答案为B 解释

We live in an age____more information is available with greater ease than ever before. ...We live in an age____more information is available with greater ease than ever before. A. why B. when C. to whom D. on which 答案为B 解释
We live in an age____more information is available with greater ease than ever before. ...
We live in an age____more information is available with greater ease than ever before. A. why B. when C. to whom D. on which 答案为B 解释一下其他选项不可以的原因.要详细.!
When = In which 还是At Which啊?

We live in an age____more information is available with greater ease than ever before. ...We live in an age____more information is available with greater ease than ever before. A. why B. when C. to whom D. on which 答案为B 解释
B
我们生活在一个比以前任何一个时候都能较轻松地获取更多信息的时代
从句意不难看出,定语从句缺的是时间状语(when= in which,意为in the age)
表示时间段可用inin which 等于when,所以选B.when.表示时段不能用on,更不可用to,故排除C.D.why 是表原因的,与语境不符.
关于 when 等于in which 还是at which,就要看不同句子,不同意思了.when 可以等于in which 表时段,如此句; when 也可指代at which,表时点.如果指具体的某一天,它也可以等于on which

B

B 关系副词when此处相当于in which
选AC句子不通,D介词不对
续:关系副词换介词加关系代词时,介词视具体情况而定,此处前面有in an age,when =in which

参考如下:
B
这里是个定语从句,从句的主语、系动词、表语一应俱全,而前行词an age与从句的关系是时间状语,即In an age,故选择when

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选B,A表示原因,B表示时间,C表对象,D表地点。when=in which,where=at which根据语境而定