行为人没有代理权、超越代理权或者代理权终止后以被代理人名义订立合同,相对人有理由相信行为人有代理权的,该代理行为()
A.有效
B.无效
C.效力待定
D.可撤销
参考答案:A
I was told that by 1990 things were beginning to improve, _________ quickly enough.
A.even if not
B.even I didn’t improve
C.if not improved
D.if even to improve not
在下列血管中,血液含氧浓度最大的是 ( )
A.肺动脉
B.肺部毛细血管
C.肺静脉
D.脑静脉