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问题 单项选择题

下列存储器中，存取周期最短的是______。

A．硬盘存储器

B．CD-ROM

C．DRAM

D．SRAM

答案

参考答案：D

解析： SRAM是英文Static RAM的缩写，它是一种具有静止存取功能的内存，不需要刷新电路即能保存它内部存储的数据。而DRAM(Dynamic Random Access Memory)每隔一段时间，要刷新充电一次，否则内部的数据即会消失，因此SRAM具有较高的性能。

填空题

已知m是方程x2-x-1=0的一个根，则代数式m2-m的值等于______．
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问答题

Ang is a director of Water UnLimited, a company specialising in water treatment. At a board of directors’ meeting, the directors were informed that the company’s research and development department had come up with a revolutionary water treatment method that was less costly than current methods. The lower cost of water treatment was expected to result in increased profits for the company, and a rise in its share price. As the new water treatment process was market sensitive information, it was not to be released to the public until the press conference scheduled in a week’s time.That night, Ang telephoned his father-in-law, Boo, and told him to buy Water Unlimited shares quickly as the price was expected to go up soon. Without asking any further questions, Boo purchased 50,000 Water UnLimited shares. When the new water treatment works was announced the following week, Water UnLimited’s share price rose sharply. Boo sold his shares at a substantial profit.Required:Discuss the liabilities of Ang and Boo under the Securities and Futures Act (Cap 289). (10 marks)
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