题干
I don't think sixteen-year-olds should _____to go to an Internet cafe.
A：allow
B：be allowed
C：allowed
D：be allowing
答案(点此获取答案解析）
B
I don't think sixteen-year-olds should _____to go to an Internet cafe.
A：allow
B：be allowed
C：allowed
D：be allowing
, 灯塔A在观察站C的北偏东
, 
，则灯塔A与灯塔B的距离为（ ）
