1033.The conference aims to develop business and let people think about ______ they can have a positive influence on the planet.
A.why
B.that
C.what
D.how
1034.____ is known to us all is that the old scientist, for _____ life was hard in the past, still works very hard in his eighties.
A.As;whom
B.What;whom
C.It;whose
D.As;whose
1033.答案是D;about为介词，后接宾语从句，根据句意应为:怎样产生积极的影响，故选D。
1034.答案是B;第一空what引导主语从句;第二空for后接who的宾格whom，但学生易误选whose。
