创新的原则（）。
A.遵守科学原理原则
B.市场评价原则
C.相对较优原则
D.机理简单原则
参考答案：A, B, C, D
. Just like a voyage at sea, our life journey, ______ time is limited, is full of difficulties as well as opportunities.
A．what
B．of which
C．while
D．whose
有人将文艺复兴称作“人”的发现，怎样理解？
