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关于what和which的单选题

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关于what和which的单选题
As a result of ____is now known in physics and chemistry ,scien-tists have been able to make important discoveries in biology and medicine.   A.it B.what  C.which D.that  问题是为什么选what不选which.
The young author has published three novels so far,none of_______ I  really enjoyed  .  A.then  B.which C.whom D.what 问题是为什么选which不选what
关于what和which的单选题
 As a result of后面接名词性成分,所以这里用what引导名词从句(这里对应的是作介词的宾语从句),而which不能引导名词从句.
注意:as a result of表示“由于”之意,这句话的大意是这样的:科学家们能够在生物学和医学上获取重要的发现,是由于物理学和化学上现已取得的(某些)成果.
 
2.  none of which I  really enjoyed , 是由which引导的非限定性定语从句,what不能引导定语从句.
再问: none of 后面难道不接接名词性成分吗
再答: of which 是“介词+关系代词”的定语从句的一些用法,of之前可以加表示数和量的词,指整体中的一部分。 none of which(这里which就是指代名词,且又起连词作用) 整体是名词成分,在从句中充当宾语,I really enjoyed none of which(three novels) 注意:这与第一题是不同的,what is now known in physics and chemistry整个从句是个名词成分 这种用法又如: Both players,neither of whom reached the final,played well. The treasure some of which has been recovered has been sent to the British Museum. 这样说理解不?