D
The advantages and disadvantages of a large population have long been a subject of
discussion among economists. It has been argued that the supply of good land is limited. To feed a large population, poor land must be cultivated and good land made full use of. Thus, each person produces less and this means a lower average income than could be obtained with a smaller population. Other economists have argued that a large population gives more opportunities for specialization such as ports, roads, and railways, which are not likely to be built unless there is a big demand to justify them.
One of the difficulties in carrying out a world-wide birth control program lies in the fact that official attitudes to population growth vary from country to country depending on the level of industrial development and the availability of food and raw materials. In a developing country where a vast expanding population is pressing hard upon the limits of food, space and natural resources, it will be the first concern of the government to place a limit on the birthrate, whatever the consequences may be. In a highly industrialized society the problem may be more complex. A decreasing birthrate may lead to unemployment because it results in a declining market for products. When the pressure of the population on housing declines, prices also decline and the building industry is weakened. Faced with considerations such as these, the government of a developed country may well prefer to see a slowly increasing population, rather than one which is stable or in decline.
54．According to the first paragraph, a smaller population may mean______ if land is limited.
A．lower productivity, and a lower average income
B．lower productivity, but a higher average income
C．higher productivity, and a higher average income
D．higher productivity, but a lower average income
55．In a developed country, people will perhaps go out of work if the birthrate_______.
A．goes up B．goes down C．remains stable D．is limited
56．It is not easy to carry out a worldwide birth-control program because______.
A．there are too many underdeveloped countries in the world
B．developing countries are short of food and raw materials
C．even developed countries may have some complex problems of population
D．different governments show quite opposite views to the population
阶梯计算系列答案科目：高中英语 来源：素质教育新教案·高中英语·第一册(上) 题型：054
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I consider myself something of an expert of apologies. A quick temper has 1 me with plenty of opportunities (机会) to make them. In one of my earliest 2 , my mother was telling me, “Don’t watch the 3 when you say I’m sorry. Hold your head up and look the person in the 4 , so he’ll know you 5 it. ”
My mother thus made the key point of a (n) 6 must be direct. You must never 7 to be doing something. You do not 8 a pile of letters while apologizing to a person 9 in position after blaming him or her for a mistake that turn out to be your 10 . You do not apologize to a hostess (主人), whose guest of your honor you treat 11 , by sending flowers the next mentioning your bad 12 .
One of the important things you should do for an 13 is a readiness to 14 the responsibility (责任) for our careless mistakes. We are used to making excuses, which leaves 15 for the other person to 16 us. Since most people are open-hearted, the no-excuse apology leaves both parties feeling 17 about themselves. That, after all, is the 18 of every apology. Whether the apologize is wholly or only partly 19 at fault, answering for one's 20 encourages others to take their share of the blame.
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科目：高中英语 来源： 题型：单选题
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—Are you pleased with what he has done?
—It couldn’t be____. Why didn’t he put more effort into his work?
A. any worse B. much better C. so bad D. the best
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I like __________ color of your skirt. It is __________ good match for your blouse.
A. a; the B. a; a
C. the; a D. the; the
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科目：高中英语 来源： 题型：阅读理解
What makes a person a scientist? Does he have ways or tools of learning that are different from those of others? The answer is "No". It is not a tool a scientist uses but how he uses these tools that makes him a scientist. You will probably agree that knowing how to use a power is important to a carpenter. You will probably agree, too, that knowing how to investigate, how to discover information, is important to everyone. The scientist, however, goes one step further: he must be sure that he has a reasonable answer to his question into a large set of ideas about how the world works.
The scientist's knowledge must be exact. There is no room for half right or right just half the time. He must be as nearly right as the conditions permit. What works under one set of conditions at one time must work under the same conditions at other times. If the conditions are different, any change the scientist observes in a demonstration must be explained by the change in the conditions.
This is one reason that investigations are important in science. Albert Einstein, who developed the theory of relativity, arrived at this theory through mathematics. The accuracy of his mathematics was later tested through investigation. Einstein's ideas are shown to be correct. A scientist uses many tools for measurements. Then the measurements are used to make mathematical calculations that may test his investigations.
"...knowing how to investigate, how to discover information, is important to everyone. " The author says this to show .
A. the importance of information
B. the difference between carpenters and ordinary people
C. the difference between scientists and ordinary people
D. the importance of thinking
A sound scientific theory should be one that .
A. works under one set of conditions at any time
B. leaves no room for improvement
C. does not allow any change even under different conditions
D. can be used for many purposes
Which of the following statements is NOT tree?
A. What works under one set of conditions at one time might work under the same conditions at other times.
B. Tools which a scientist uses for measurements are used to make mathematical calculations that may test his investigations.
C. A scientist should know more about other branches of knowledge to arrive in his achievement.
D. Knowing how to investigate, how to discover information is important to scientists.
What is the main idea of the passage?
A. Scientists are different from the ordinary people.
B. The theory of relativity.
C. Exactness is the secret of science.
D. Exactness and way of using tools is the key to the making of a scientist.
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