问题
选择题
It is the prevention of disease______its successful treatment that has led to the rapid increase of the world’s population.
A．rather than
B．less than
C．in addition to
D．in the direction of
答案
答案：A
短语辨析。rather than而不是；less than 少于； in addition to 除……之外；in the direction of朝……方向。句意：是疾病的预防而不是成功的治疗疾病导致了世界人口的快速增长。故选A。