20世纪70年代初，在资本主义世界中，仅次于美国的第二经济大国是 [ ]
A、英国
B、法国
C、联邦德国
D、日本
答案：D
— How much do you know about the 3D film technology?
— A little. Not until ________ the hot movie Avatar ________ some about it.
A．did I see; did I begin to learn
B．I saw; I began to learn
C．I saw; did I begin to learn
D．did I see; I began to learn
产生肝肺综合征的根本原因是（）
A.贫血
B.肺内毛细血管扩张
C.肺通气功能下降
D.内毒素进入肺循环
E.呼吸道黏膜水肿
