Question

Despite their______of interest, Fleming kept trying to develop chemical     ______ it would be safe and effective.

A．lack, so as to	B．lacking, so as to
C．lack, so that	D．lacking, so that

Answer 1

C

試題分析：考查短語用法。Lacking要與介詞in連用；名詞lack與介詞of連用，表示缺少…；so as to后面不能接句子，只能接短語；so that后面接句子。句意：盡管他們?nèi)鄙倥d趣，但是Fleming 還是不停地發(fā)展化學(xué)品，以至于那些化學(xué)品安全有效。故C正確。
點評：Lacking要與介詞in連用；名詞lack與介詞of連用，表示缺少…；so as to后面不能接句子，只能接短語；so that后面接句子。