日喀则有()的美誉。
A.青稞之乡
B.酥油之乡
C.藏海之乡
D.牦牛之乡
参考答案:A
This is the factory _______we visited last year. [ ]
A. where
B. which
C. the one
D. at which
《保密法》的作用是什么