心脏骤停最容易发生不可逆转损害的器官是
A．肺B．凝血系统C．胃肠道D．脑E．脾
参考答案：D
（）最先提出用期望收益率和收益率的方差来衡量投资的预期收益水平和风险。
A.马柯威茨
B.詹森
C.特雷诺
D.夏普
No one in the office, I dare say, will agree to the choice you ______ at the conference. [ ]
A. faced
B. gave
C. made
D. had
