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[主观题]

Some pessimistic experts feel that the automobile is bound to fall into disuse. They see a

day in the not-mo-distant future when all autos will be abandoned and allowed to rust. Other authorities, however, think the auto is here to stay. They hold that the car will remain a leading means of travel in the foreseeable future.

The motorcar will undoubtedly change significantly over the next 30 years. It should become smaller, safer, and more economical, and should not be powered by the gasoline engine. The car of the future should be far more pollution-free than present types.

Regardless of its power source, the auto in the future will still be the main problem in urban traffic congestion(拥挤). One proposed solution to this problem is the automated highway system.

When the auto enters the highway system, a retractable(可伸缩的) arm will drop from the auto and make contact with a rail, which is similar to those powering subway trains electrically. Once attached to the rail, the car will become electrically powered from the system, and control of the vehicle will pass to a central computer. The computer will then monitor all of the car's movements.

The driver will use a telephone to dial instructions about his destination into the system. The computer will calculate the best route, and reserve space for the car all the way to the correct exit from the highway. The driver will then be free to relax and wak for the buzzer(蜂鸣器) that will warn of his coming exit. It is estimated that an automated highway will be able to handle 10,000 vehicles per hour, compared with the 1,400 to 2,000 vehicles that can be carried by a present-day highway.

One significant improvement in the future car may probably be ______.

A．its power source

B．its driving system

C．its monitoring system

D．its seating capacity

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发布时间：2023-03-27

更多“Some pessimistic experts feel that the automobile is bound to fall into disuse. They see a”相关的问题

第1题

Man cannot go on increasing his number at the present rate. In the【56】30 years man will fa

ce a period of crisis.【57】experts believe that there will be a widespread food【58】. Other experts think this is【59】pessimistic (悲观的), and that man can prevent things from【60】.

【61】thing that man can do is to limit the【62】of babies born. The need【63】this is obvious, but it is not【64】to achieve. People have to be【65】to limit their families. In the countries of the population【66】, many people like big families. The parents think that this【67】a bigger income for the family and ensures there will be someone in the family who will look【68】them in old age.

Several governments have【69】birth control policies in recent years.【70】them are Japan, China, India and Egypt. In some【71】the results have not been successful. Japan has been an【72】. The Japanese adopted a birth control policy in 1948. People were【73】to limit their families. The birth【74】fell from 34.3 per thousand per year to about 17.0 per year【75】present.

(46)

A．second

B．recent

C．next

D．late

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第2题

阅读材料，回答题。Man cannot go on increasing his number at the present rate. In the next 30

阅读材料，回答题。

Man cannot go on increasing his number at the present rate. In the next 30 years man will faca period of crisis. Some experts believe that there will be a widespread food___ 51 ____. Other experthink this is too pessimistic (悲观的), and that man can prevent things from___ 52 ____worse tha they are now. But remember that two thirds of the people in the world are under-nourished or stmving now.

One thing that man can do is to limit the___ 53 ____of babies born. The need for this is obvious but it is not easy to achieve. People have to be___ 54 ____to limit their families. In the countries of the population___ 55 ____, many people like big families. The parents think that this makes a bigger income for the family and ensures there will be someone in the family who will look___ 56 ____them in old age.

Several governments have___ 57 ____birth control policies in recent years. Among them are Japan, China, India and Egypt. In some cases the results have not been successful. Japan has been an___ 58____The Japanese adopted a birth control policy in 1921~3. People were___ 59 ____to limit their families. The birth rate fell from 34.3 per thousand per year to about 17.0 per year___ 60 ____ present.

________ 查看材料

A.Need

B.want

C.Absence

D.shortage

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第3题

adj. 可耻的（）

A.nnoyed

B.shameful

C.iscouraged

D.pessimistic

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第4题

The Hemingway Code heroes are best remembered for their ___

A、indestructible spirit

B、pessimistic view of life

C、war experiences

D、masculinity

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第5题

How would you describe the author's personality（)？

A.Shy and under confident

B.Strong but quiet.

C.Extremely pessimistic

D.Optimistic and outgoin

E.

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第6题

For the past several decades, it seems there's bee...

For the past several decades, it seems there's been a general consensus on how to get ahead in America: Get a college education, find a reliable job, and buy your own home. But do Americans still believe in that path, and if they do, is it attainable？ The most recent National Journal poll asked respondents about the American dream, what it takes to achieve their goals, and whether or not they felt a significant amount of control over their ability to be successful. Overwhelmingly, the results show that today， the idea of the American dream—and what it takes to achieve it—looks quite different than it did in the late 20th century. By and large, people felt that their actions and hard work—not outside forces—were the deciding factor in how their lives turned out. But respondents had decidedly mixed feelings about what actions make for a better life in the current economy. In the last seven years, Americans have grown more pessimistic about the power of education to lead to success. Even though they see going to college as a fairly achievable goal, a majority—52 percent—think that young people do not need a four-year college education in order to be successful. Miguel Maeda, 42, who has a master's degree and works in public health, was the first in his family to go to college, which has allowed him to achieve a sense of financial stability his parents and grandparents never did. While some, like Maeda, emphasized the value of the degree rather than the education itself, others still see college as a way to gain new perspectives and life experiences. Sixty-year-old Will Fendley, who had a successful career in the military and never earned a college degree, thinks "personal drive" is far more important than just going to college. To Fendley， a sense of drive and purpose, as well as an effective high-school education, and basic life skills, like balancing a checkbook, are the necessary ingredients for a successful life in America. 51.It used to be commonly acknowledged that to succeed in America, one had to have _____.

A.an advanced academic degree

B.an ambition to get ahead

C.a firm belief in their dream

D.a sense of drive and purpose

52.What is the finding of the latest National Journal poll concerning the American dream_____

A.More and more Americans are finding it hard to realize.

B.It remains alive among the majority of American people.

C.Americans' idea of it has changed over the past few decades.

D.An increasing number of young Americans are abandoning it.

53.What do Americans now think of the role of college education in achieving success_____

A.It still remains open to debate.

B.It has proved to be beyond doubt.

C.It is no longer as important as it used to be.

D.It is much better understood now than ever.

54.How do some people view college education these days_____

A.It promotes gender equality.

B.It needs to be strengthened.

C.It adds to cultural diversity.

D.It helps broaden their minds.

55.What is one factor essential to success in America, according to Will Fendley_____

A.A desire to learn and to adapt.

B.A strong sense of responsibility.

C.A willingness to commit oneself.

D.A clear aim and high motivation.

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第7题

EXP[#j]=1，则#j=1。（)

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第8题

玻耳兹曼分布为（)。

A.w/(exp(a+be)-1)

B.wexp(-a-be)

C.w/(exp(a+be)+1)

D.w(exp(a+be)+1)

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第9题

试求方程组x'=Ax的一个基解矩阵，并计算exp（At)，其中A为：

试求方程组x'=Ax的一个基解矩阵，并计算exp(At)，其中A为：

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第10题

以下库函数中，属于字符串函数的是（)

A.Rnd

B.LTrim

C.CSng

D.Exp

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第11题

生成随机数的方法是（)。

A.round()

B. nextInt()

C. exp()

D. pow()

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