—Nancy, remember _______ the window before you go to bed!
—OK, Mom!
A:close
B:closing
C:to close
D:closed
如图一个圆柱形饮料罐,底面半径是5,高是12,上底面中心有一个小圆孔,则一条到达底部的直吸管在罐内部分a的长度(罐壁的厚度和小圆孔的大小忽略不计)范围是( )
Her doctor said: " work so hard."