Asia has achieved more in controlling the bird flu than Europe in the past few years, _______ the number of people infected with the virus is going up sharply.
A.when
B.that
C.so that
D.where
网友回答
D解析本题易误选A。where引导的是非限制性定语从句，以说明欧洲在控制the bird flu病毒方面的情况，从而与亚洲形成对比。