问题 单项选择题 A1型题

关于真菌的描述错误的是()

A.真菌又称霉菌

B.真菌的基本结构成分是黏多糖和蛋白质

C.放线菌和白色念珠菌不是真菌

D.由于抗生素的广泛应用导致几年来真菌感染的发病率增高

E.免疫缺陷患者真菌感染的概率增加

答案

参考答案:C

解析:真菌又称霉菌,其种类较多,常见的如毛霉菌、曲霉菌、新型隐球菌,放线菌和白色念珠菌也是真菌。近年来由于抗生素、激素、化疗和免疫抑制剂的广泛应用,使人体的抵抗力下降,导致发病率增高。真菌的基本结构成分是黏多糖和蛋白质。

阅读理解

阅读理解。

     In recent years many countries have been faced with the problem of how to make their workers more

productive. Some experts believe that the answer is to make jobs more varied. Do more varied jobs lead

to greater productivity? There is something to suggest that while variety certainly makes the worker's life

more enjoyable, it does not make him work harder. So variety is not important.

     Other experts feel that giving the worker freedom to do his job in his own way is important and there is no doubt that this is true. The problem is that this kind of freedom cannot easily be given in the modern factory with its complicated machinery which must be used in a fixed way. Thus while freedom of choice may be important, there is very little that can be done to achieve this.

     Another important consideration is how much each worker contributes to the product he is making. In most factories the worker sees only one small part of the product. Some car factories are said to be

experimenting with having many small production lines rather than a large one, so that each worker

contributes more to the production of the cars on his line.It would seem then that the degree of workers'

contribution is important.

     To what extent does more money lead to greater productivity? The workers themselves cartainly think

this is important, but perhaps they want more money only because the work they do is so boring. Money

just lets them enjoy their spare time more. A similar argument may explain demands for shorter working

hours. Perhaps if companies succeed in making workers' jobs more interesting, they will neither want more money, nor will shorter working hours be so important to them.

1. Which of the following things will not increase productivity?

A. Making jobs more varied.

B. Giving workers freedom to do their jobs in their own way.

C. Increasing workers' contribution to production.

D. Longer working hours.

2. The last sentence in this passage means that if companies manage to make workers' jobs more

interesting, _____.

A. they will want more money

B. they will demand shorter working hours

C. more money and shorter working hours are important

D. more money and shorter working hours will not be so important to them

3. In this passage, the writer tells us _____.

A. how to make workers more productive

B. possible factors leading to greater productivity

C. more money leads to greater productivity

D. how to make workers' jobs more interesting

4. The writer of this passage is probably a _____.

A. teacher  

B. worker  

C. manager  

D. physicist

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