冠状动脉粥样硬化好发部位（）
A.左前降支
B.右冠脉
C.左旋支
D.左主干
E.右后降支
参考答案：A
As an investor continues to move downward on the efficient frontier, which of the following best describes the change in the: slope of the efficient frontier incremental return per unit of incremental risk（）
A. Increases Increases
B. Increases Decreases
C. Decreases Increasea
当乌苏里江畔的人们迎来曙光时，新疆喀什的天空还是[ ]
A、烈日当空
B、天色微明
C、满天星斗
D、一片晚霞
