Based on a recent survey of the attitudes of people on Medicare is ______.

A．the capital city of the United States of America

B．a textbook on American politics

C．what the author is going to write

D．a statement that the American government cannot fool its people

超声诊断脑积水(中期)的指征是

A．双顶径增大，胎儿水肿

B．四肢伸展，脑室扩大

C．羊水过多，头-体比例失调

D．侧脑室率＞0.5，脑中线偏移

E．侧脑室率＞0.6，脑中线偏移