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问题 单项选择题

红星公司购入500吨小麦，价格为1300元/吨，为避免价格风险，该公司以1330元/吨的价格在郑州小麦3个月后交割的期货合约上做卖出保值并成交。2个月后，该公司以1260元/吨的价格将该批小麦卖出，同时以1270元/吨的成交价格将持有的期货合约平仓。该公司该笔保值交易( )。

A．亏损4000元

B．亏损2000元

C．盈利10000元

D．盈利15000元

答案

参考答案：C

解析： 该公司期货市场上的盈利为60元/吨，现货市场上的亏损为40元/吨，因此其净盈利为20元/吨，共实现盈利20×500=10000(元)。

填空题

sin155°cos35°-cos25°cos235°=______．
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单项选择题

Modern industrial society grants little status to old people. In fact, such a society has a system of built-in obsolescence. There is no formal system for continuing our education throughout our life in order to keep up with rapidly changing knowledge. When our education and job skills have grown obsolete, we are treated exactly like those who have never gained an education or job skills and are not encouraged or given the opportunity to begin anew.As a society becomes more highly developed, the overall status of older people diminishes. Improved health technology creates a large pool of old people, who compete for jobs with the young. However, economic technology lowers the demand for workers and creates new jobs for which the skills of the aged are obsolete, forcing older people into retirement. At the same time, young people are being educated in the new technology and are keeping pace with rapid changes in knowledge. Finally, urbanization creates age-segregated neighborhoods. Because the old live on fixed incomes, they must often live in inferior housing. All these factors — retirement, obsolete knowledge and skills, inferior standards of living — lower the status of the aged in society.A century ago, when one could expect to live only to 50 or so, the life span more or less coincided with the occupation and family cycle. But today the average life span allows for fifteen to twenty years of life after these cycles. It appears that our life span is outpacing our usefulness in society.

By "a system of built-in obsolescence" the author means________.

A．no formal systems exist in modern industrial society

B．old people have no status in modern industrial society

C．young people have chances in modern industrial society

D．knowledge changes rapidly in modern industrial society
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