收益率曲线（）的机会最多。
A.向上倾斜
B.向下倾斜
C.水平
D.隆起
参考答案：A
俄罗斯大部分地区属（ ）
A．温带季风气候
B．温带草原气候
C．地中海气候
D．温带大陆性气候
Last week, only two people came to look at the house, wanted to buy it. [ ]
A. none of them
B. both of them
C. none of whom
D. neither of whom
