—Where’s the bag?
—I _____ know. [ ]
A. aren't
B. don't
C. isn't
答案:B
一个人站在北极点,他的前后左右方向是( )
A.都是正南
B.东西南北
C.东南西北
D.都是正北
思想政治教育的主体和客体?