问题
选择题
Despite their __________ of interest, Fleming kept trying to develop the chemical ___________ it would be safe and effective.
A．lacking; in order to
B．lack; so that
C．lack; so as to
D．lacking; so that
答案
答案：B
题目分析:考查名词和目的状语。根据their可知后面填名词lack，排除A、D选项；而in order to和so as to后面跟动词原形，so that引导目的状语从句， 由此可知B选项正确。.句意：尽管他们对此缺少兴趣，弗莱明坚持努力去研究这种化学物质，为的是让它更安全有效。