黑河市和绥芬河市的市民可以很容易购得下列哪个国家的商品[ ]
A．韩国
B．朝鲜
C．俄罗斯
D．蒙古
答案：C
请用括号中所给词的适当形式完成下列句子。
1. How many ______________ (ruler) are there on your desk?
2. My father ______________ (like) sports.
3. Look at the girl. ______________ (she) name is Bai Lin.
4. It's ______________ (rain) today.
5. I like ______________ (play) computer games.
背越式跳高弧线助跑的优点是什么？
