This problem may lead to more serious ones if _D___ unsolved.x05

题目

This problem may lead to more serious ones if _D___ unsolved.x05
A.makingx05 B.remainedx05 C.keeping x05D.left
这题为什么不能选B
To what extent will future scientific discoveries ___B_____ the prolonging of human life?
A.be made possible B.make possible
C.make it possible D.be made it possible
为什么不选C?

答案

This problem may lead to more serious ones if _D___ unsolved.x05
A.makingx05 B.remainedx05 C.keeping x05D.left
这题为什么不能选B
答：本题考状语从句的省略.
译：这个问题如果不解决,将导致更多严重的问题.
析：if left unsolved= if it is left unsolved ,从句是leave sth.unsolved 的被动语态.意思是听之任之,不去解决它.状语从句的主语如果与主句主语相同,从句谓语中有be动词,可以省略主语加be.
而remain为系动词,它可以跟形容词作表语：如：the problem remained unsolved.
也可以作不及物动词,其现在分词作前置定语：the remaining 20 dollars.
if remained unsolved,如果成立,则=If it is remained unsovled,则是错误的.
如改为：if it remains unsolved,也可以.
待续.
To what extent will future scientific discoveries ___B_____ the prolonging of human life?
A.be made possible B.make possible
C.make it possible D.be made it possible
为什么不选C?
答：因为被动、疑问、定语从句等原因,会引起句子的倒装,而使句子的结构混乱,理解困难.只要将它们还原成正常的句子,理解,选择会变得容易得多.
些题是一般将来时,程度状语又提到了句首,我们试着还原成一个陈述句：
Future scientific discoveries will make possible the prolonging of human life to what extent?
译：未来的科学发现会使人类寿命的延长到何种程度呢?
make这里是一个复宾动词.宾补是形容词possible:　make sth.possible,使.成为可能.
如果宾语是不定式,从句时,应用形式宾语it,而将真正的宾语后置：make it possible to do sth.
make it a rule that sb.should do sth.
但是这句话中make的宾语并不是不定式也不是从句,而是一个名词短语：the prolonging of human life,不需要形式宾语.但是由于这个宾语相对（possible),较长,在不影响理解的前提下,为了句子的平衡,将宾语后置（/补语提前）了.