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问题

图为1492年开辟的一条新航路示意图，此次航海活动产生的直接影响是（  ）

A．美洲被发现

B．到达了印度

C．发现了好望角

D．实现了环球航行

答案

答案：A

本题难度低，考查学生识记能力，由时间提示可知是1492年哥伦布发现美洲大陆，答案选A。

单项选择题 A1/A2型题

患者，疮疡溃久难敛，脓水清稀，皮面色淡，气短乏力，舌淡脉细弱，治疗宜首选的药物是（）

A.吉林的人参

B.江苏的薄荷

C.内蒙古的黄芪

D.山西的党参

E.宁夏的枸杞
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单项选择题

An analyst is comparing two bonds and has collected the following data: Bond A: Nominal spread of 125 basis points, zero-volatility spread of 125 basis points, and option-adjusted spread of 65 basis points. Bond B: Nominal spread of 95 basis points, zero-volatility spread of 95 basis points, and option-adjusted spread of 95 basis points. Each bond is similar in all respects except that bond A is a mortgage pass-through security and bond B is a non-callable corporate bond. Based only on this information, which of the following statements is most accurate（）

A. The yield curve is perfectly flat.

B. Bond A is preferred over Bond B because its nominal spread is 30 basis points higher.

C. The option-adjusted spread measures the relative curvature of the yield curve and its effect on option cost.
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