下述哪一项属于概率抽样方法()。
A.偶遇抽样
B.立意抽样
C.系统抽样
D.雪球抽样
E.判断抽样
参考答案:C
— What impresses you most about your hometown?
— The street, the width of which is three times ______ it was ten years ago. [ ]
A. that
B. as
C. than
D. what
配制酒是酒与酒或酒与非酒精原料()而成的。