消息一般都采用特殊的结构方式,这种方式被称为“倒金字塔式”。( )
参考答案:对
---- Mary quitted the job again last week.
---- Why did she do a thing like that? It seems to make no__________.
A.comment
B.sense
C.meaning
D.difference
测量双顶径时,如果中线回声呈连续而不中断,说明扫查平面()
A.正常
B.太高
C.太低
D.探头损坏
E.以上都不是