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问题 单项选择题

In the dominant firm model of oligopoly, it is least likely that one firm:（）

A. is the innovation leader in product development.

B. has a significant cost advantage over its competitors.

C. produces a relatively large share of the industry’s production.

答案

参考答案：A

解析：

The dominant firm mode1 of oligopoly is based on the assumption that one firm has a significant cost advantage which allows it to set the price in the market and control a relatively large share of the industry’s production and sales. It does not assume that the firm will be the innovation leader in product development. In fact, being more innovative is one of the factors that allow smaller competitors that work at a cost disadvantage to survive.

多项选择题

企业因( )资金管理的需要，可以向银行申请开立专用存款账户。

A．更新改造资金

B．商品收购款

C．期货交易保证金

D．财政预算外资金
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填空题


Throughout history has (1) changed his physical environment in order to improve his (2) of life. With the tools of technology he has (3) many physical features of the earth. He has (4) woodlands and prairies into farms and made lakes and reservoirs (5) of rivers for irrigation purposes or hydroelectric (6) . Man has also modified the face of the earth by (7) marshes and cutting through mountains to (8) roads and railways.
However, man’s (9) to the physical environment have not always had beneficial results. Today, (10) of the air and water is an increasing danger to the health of the (11) . Each day thousands of tons of gases come out of the exhausts of motor vehicles. (12) from factories pollutes the air of industrialized areas and the surrounding (13) of the countryside. The pollution of water is equally harmful. The whole ecological (14) of the sea is being changed and (15) wastes have already made many rivers lifeless.
Now (16) protection is more pressing than ever before. As we know, massive destruction of the environment has brought about (17) effects and even poses a great (18) to man’s existence. Indifference to these problems will mean committing suicide. Therefore, effective (19) should be taken and laws passed to (20) the environment. Otherwise, man is certain to suffer from the serious consequences caused by this lack of care for his living surroundings.
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