假设ABC公司的股票现在的市价为30元。有1份以该股票为标的资产的看涨期权，执行价格为30.5元，到期时间是6个月。6个月以后股价有两种可能：上升35%，或者降低20%。无风险利率为每年4%。拟利用复制原理，建立一个投资组合，包括购进适量的股票以及借入必要的款项，使得该组合6个月后的价值与购进该看涨期权相等。
要求：
（1）计算利用复制原理所建组合中股票的数量为多少
（2）计算利用复制原理所建组合中借款的数额为多少
（3）期权的价值为多少
A．条件(1)充分，但条件(2)不充分．
B．条件(2)充分，但条件(1)不充分．
C．条件(1)和(2)单独都不充分，但条件(1)和条件(2)联合起来充分．
D．条件(1)充分，条件(2)也充分．
E．条件(1)和(2)单独都不充分，条件(1)和条件(2)联合起来也不充分．
For me, scientific knowledge is divided into mathematical sciences, natural sciences or sciences dealing with the natural world (physical and biological sciences), and sciences dealing with mankind (psychology, sociology, all the sciences of cultural achievements, every kind of historical knowledge). Apart from these sciences is philosophy, about which we Will talk later. In the first place, all this is pure of theoretical knowledge, sought only for the purpose of understanding, in order to fulfil the need to understand what is intrinsic and consubstantial to man. What distinguishes man from animal is that he knows and needs to know. If man did not know that the world existed, and that the world was of a certain kind, that he was in the world and that he himself was of a certain kind, he wouldn’t be man. The technical aspects or applications of knowledge are equally necessary for man and are of the greatest importance because they also contribute to defining him as man and
A. Astronomy
B. Literature
C. Chemistry
D. Economics
Last month Hanson Transmissions International, a maker of gearboxes for wind turbines, was listed on the London Stock Exchange. Nothing noteworthy about that, you might say, despite the jump in the share price on the first day of trading and the handsome gain since: green technology is all the rage, is it not But Hanson exemplifies another trend too, which should prove every bit as durable: the rise of multinational companies from emerging economies. Its parent is Suzlon, an Indian firm that began life as a textile manufacturer but is now among the world’s five leading makers of wind turbines. Along the way, Suzlon has acquired not only Hanson, originally Belgian, but also REpower, a German wind-energy firm, spending over $ 2 billion on the pair.
The world is now replete with Suzlons: global companies from emerging economies buying businesses in rich countries as well as in poorer places. Another Indian company, Tata Motors, looks likely to add to the list soon, by
A. It’s a multinational company characterized by green technology.
B. It was originally a Belgian company acquired by an Indian firm.
C. It’s an example of emerging economies buying businesses in rich countries.
D. The parent of the company started from a business in wind energy.
我来回答:
