自2002年1月1日起，进口关税设（）。
A.最惠国税率
B.协定税率
C.特惠税率
D.普通税率
E.优惠税率
参考答案：A, B, C, D
It is said that many kids are worried about the year 2012, ____they think the earth will be destroyed
by disasters. [ ]
A. when
B. where
C. as
D. which
肾炎型肾病综合征
