筛漏斗的前上部为（）
A.筛泡
B.钩突
C.上颌窦开
D.额隐窝
E.额骨鼻突
参考答案：D
在根据统计图进行比较、判断时，要注意统一______长度所表示的数量．
is known to us all, the earth is round.
That is to say is known to us all is that the earth is round .
A．As, what
B．As, as
C．what ,as
D．What ,what
