如图:矩形ABCD的对角线AC=10,BC=8,则图中五个小矩形的周长之和为( )
A:14
B:16
C:20
D:28
我们生活的亚洲,地形和气候复杂,人口众多,文化多样.结合所学知识回答
亚洲东部和南部,经常都会造成不同程度的旱涝灾害的影响,主要原因是( )
____ ____ do you go to the movies?
─ Do you drink much coffee as before?
─ No, at all. My sleeping problem is getting worse.