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问题 单项选择题

利率是各国发展国民经济的重要杠杆之一，下列不属于利率高低决定因素的是（）

A.社会平均利润率的高低

B.借出资本的期限长短

C.金融市场上借贷资本的供求情况

D.宏观经济管理

答案

参考答案：D

解析：利率是各国发展国民经济的重要杠杆之一，利率的高低由以下因素决定：（1）利率的高低首先取决于社会平均利润率的高低，并随之变动。（2）在社会平均利润率不变的情况下，利率高低取决于金融市场上借贷资本的供求情况。（3）借出资本要承担一定的风险，风险越大，利率也就越高．（4）通货膨胀对利息的波动有直接影响，资金贬值往往会使利息无形中成为负值。（5）借出资本的期限长短。

单项选择题

The number of speakers of English in Shakespeare’s time is estimated to have been about five million. Today it is estimated that some 260 million people speak it as a native language, mainly in the United States, Canada, Great Britain, Ireland, South Africa, Australia and New Zealand. In addition to the standard varieties of English found in these areas, there are a great many regional and social varieties of the language as well as various levels of usage that are employed both in its spoken and written forms.
In fact, it is impossible to estimate the number of people in the world who have acquired an adequate working knowledge of English in addition to their own languages. The purpose for English learning and the situations in which such learning takes place are so varied that it is difficult to explain and still more difficult to judge what forms an adequate working knowledge for each situation.
The main reason for the widespread demand for English is its present-day importance as a world language. Besides serving the indefinite needs of its native speakers, English is a language in which some of important works in science, technology, and other fields are being produced, and not always by native speakers. It is widely used for such purposes as meteorological and airport communications, international conferences, and the spread of information over the radio and television networks of many nations. It is a language of wider communication for a number of developing countries, especially former British colonies. Many of these countries have multilingual populations and need a language for internal communication in such matters as government, commerce, industry, law and education as well as for international communication and for entrance to the scientific and technological developments in the West.

What type of developing countries would be most likely to use English

A. Those geographically close to the United States.
B. Those interested in the culture of the United States.
C. Former colonies of Great Britain.
D. Countries where international conferences are held.
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单项选择题 A1/A2型题

石膏模型材料的性能特点是（）。

A.混水率越大，凝固时间越长，最后的生成物强度越低

B.混水率越大，凝固时间越短，最后的生成物强度越低

C.混水率越大，凝固时间越长，最后的生成物强度越高

D.混水率越大，凝固时间越短，最后的生成物强度越高

E.混水率与凝固时间及最后的生成物强度无关
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