It is the prevention of disease its successful treatment that has led to the rapid increase of the world’s population.
A. more than
B. rather than
C. other than
D. less than
网友回答
A. more than
(答案→)B. rather than
C. other than
D. less than
解析：考查than短语。A不仅仅；超过；分词；B代替，而不是；C除…之外；D少于…；结合句意可知B正确。句意：不是成功的治疗疾病而是预防疾病导致了世界人口的迅速增加。