岛屿数量最少的洲是哪个洲？
参考答案：
非洲
The students their pens when the teacher told them to stop writing.
A. turn down B. put down C. put off
对已到期其他企业债进行五级分类，一般应划分为（）类。
A.关注
B.次级
C.可疑
D.损失
