A:鼻毛能阻挡灰尘
B:鼻腔与多种管腔相通
C:鼻黏膜能温暖吸入的空气
D:黏膜分泌的黏液能使吸入的空气变得湿润
种类
数量(枚)
合计/元(列式计算)
1元硬币
4
____
5角硬币
7
2角硬币
12
5分硬币
5
总计
—Can you do your homework?
—______.
--- You're relaxing yourself here?
--- Yes. It feels to walk slowly along the river.