Many theories about the origin of the ocean have b... - 搜题云问答

第1题

Passage Three Many theories about the origin of the ocean have been proposed by scientis

Passage Three

Many theories about the origin of the ocean have been proposed by scientists. The most widely accepted one is that the earth at some time in its very early history became hot enough to melt the materials from which it was formed. While in this molten state, lighter rock-forming materials (造岩材料) floated on the surface of the heavier ones. Then, between four and a half four billion (十亿) years ago, the molten earth cooled sufficiently to form. a crust of rock that was many miles thick.

Surrounding the earth was an unbroken canopy of clouds miles thick and made up mostly of water vapor. Rain falling toward the still-hot earth was heated to steam and rose to the clouds again. After many millions of years, as the earth continued to cool, its surface temperature fell below the boiling point of water. Rainwater could now remain on the earth, covering its whole surface except for the higher places on earth that had been formed from the lighter rock materials.

In 1970, scientists had pieced together evidence that the lighter rock materials had formed one huge continent by a vast ocean. Then, about 200 million years ago, the great continent began to break up, the pieces moving slowly apart.

The onrushing waters of the single huge ocean now entered and filled the spaces between the separating continents--and became the several oceans and seas we know today.

41. This passage mainly talks about ______.

A. the origin of the earth

B. the origin of the ocean

C. the history of the earth

D. the forming of the earth's crust

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第2题

Humans are unique in the extent to which they can reflect on themselves and others. Humans

are able to (21) , to think in abstract terms, to reflect on the future. A meaningless, (22) world is an insecure world. We do not like extensive insecurity. When it (23) to human behavior. we infer meaning and (24) to make the behavior. understandable.

(25) all this means is that people develop "quasi theories" of human behavior, that is, theories that are not developed in a (an) (26) , scientific manner. When doing so, people believe they know (27) humans do the things they do.

Let's consider an example. In the United States people have been (28) with the increasing amount of crime for several years. The extent of crime bothers us; we ourselves could be victims. But it (29) bothers us that people behave in such ways. Why can such things happen？ We develop quasi theories. We (30) concerned about the high crime rate, but we now believe we (31) it: our criminal justice system is (32) ; people have grown selfish and inconsiderate as our moral values weaken (33) the influence of liberal ideas; too many people are (34) drugs. These explanations suggest possible solutions. (35) the courts; put more people in jail as examples to other lawbreaker. There is now hope that the problem of crime can be solved if only we (36) these solutions. Again, the world is no longer meaningless nor (37) so threatening. These quasi theories (38) serve a very important function for us. But how accurate are they？ How (39) will the suggested solutions be？ These questions must be answered with (40) to how people normally go about developing or attaining their quasi theories of human behavior.

A．reason

B．consider

C．understand

D．regard

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第3题

All that we really need to plot out the future of our universe are a few good measurements

. This does not mean that we can sit down today and outline the future course of the universe with anything like certainty. There are still too many things we do not know about the way the universe is put together. But we do know exactly what information we need to fill in our knowledge, and we have a pretty good idea of how to go about getting it.

Perhaps the best way to think of our present situation is to imagine a train coming into a switchyard. All of the switches are set before the train arrives, so that its path is completely determined. Some switches we can see, others we can not. There is no ambiguity if we can see the setting of a switch: we can say with confidence that some possible futures will not materialize and others will. At the unseen switches, however, there is no such certainty. We know the train will take one of the tracks leading out, but we have no idea which one. The unseen switches are the true decision points in the future, and what happens when we arrive at them determines the entire subsequent course of events.

When we think about the future of the universe, we can see our "track" many billions of years into the future, but after that there are decision points to be dealt with and possible fates to consider. The goal of science is to reduce the ambiguity at the decision points and find the true road that will be followed.

According to the passage, it is difficult to be certain about the distant future of the universe because we ______.

A．have too many conflicting theories

B．do not have enough funding to continue our research

C．are not sure how the universe is put together

D．have focused on investigations of the moon and planets

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第4题

All that we really need to plot out the future of our universe are a few good measurements

. This does not mean that we can sit down today and outline the future course of the universe with anything like certainty. There are still too many things we don't know about the way the universe is put together. But we do know exacdy what information we need to fill in our knowledge, and we have a pretty good idea of how to go about getting it. Perhaps the best way to think of our present situation is to imagine a train coming into a switchyard(调车场). All of the switches(转辙器) are set before the train arrives, so that its path is completely determined. Some switches we can see, others we cannot. There is no ambiguity if we can see the setting of a switch; we can say with confidence that some possible futures will not materialize and others will. At the unseen switches, however, there is no such certainty. We know the train will take one of the tracks leading out, but we have no idea which one. The unseen switches are the true decision points in the future, and what happens when we arrive at them determines the entire subsequent course of events.

When we think about the future of the universe, we can see our "track" many billions of years into the future, but after that there are decision points to be dealt with and possible fates to consider. The goal of science is to reduce the ambiguity at the decision points and find the true road that will be followed.

According to the passage, it is difficult to be certain about the distant future of the universe because we______.

A．have too many conflicting theories

B．do not have enough funding to continue our research

C．are not sure how the universe is put together

D．have focused our investigations on the moon and planets

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第5题

Part ADirections: Read the following four texts. Answer the questions below each text by c

Part A

Directions: Read the following four texts. Answer the questions below each text by choosing A, B, C or D. (40 points)

All that we really need to plot out the future of our universe are a few good measurements. This does not mean that we can sit down today and outline the future course of the universe with anything like certainty. There are still too many things we do not know about the way the universe is put together. But we do know exactly what information we need to fill in our knowledge, and we have a pretty good idea of how to go about getting it.

Perhaps the best way to think of our present situation is to imagine a train coming into a switchyard. All of the switches are set before the train arrives, so that its path is completely determined. Some switches we can see, others we cannot. There is no ambiguity if we can see the setting of a switch: we can say with confidence that some possible futures will not materialize and others will. At the unseen switches, however, there is no such certainty. We know the train will take one of the tracks leading out, but we have no idea which one. The unseen switches are the true decision points in the future, and what happens when we arrive at them determines the entire subsequent course of events.

When we think about the future of the universe, we can see our "track" many billions of years into the future, but after that there are decision points to be dealt with and possible fates to consider. The goal of science is to reduce the ambiguity at the decision points and find the true road that will be followed.

According to the passage, it is difficult to be certain about the distant future of the universe because we ______.

A．have too many conflicting theories

B．do not have enough funding to continue our research

C．are not sure how the universe is put together

D．have focused our investigations on the moon and planets

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第6题

Many theories have been ______ as to why some women suffer from depression.A．referred toB．

Many theories have been ______ as to why some women suffer from depression.

A．referred to

B．put forward

C．rest assured

D．left out

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第7题

&8226;Read this text taken from an article on theories of management,&8226;Choose the best

&8226;Read this text taken from an article on theories of management,

&8226;Choose the best sentence from the opposite page to fill each of the gaps.

&8226;For each gap 9-14, mark one letter (A-H) on your Answer Sheet.

&8226;Do not use any letter more than once.

&8226;There is an example at the beginning (O).

Don't follow that theory - think for yourself!

In the 1990s, according to US author Eileen Shapiro, managers have abandoned the right to manage. She argues that managers in the USA have lost confidence. (0) H

She describes a corporate culture which is extremely defensive and which has as its motto 'Managers should always follow the latest short-lived management theory, no matter how irrelevant it may be'. (9) In turn, these have been followed blindly by managers who have given up their central responsibility - taking decisions about their own business in their own particular circumstances.

"I really believe a manager's job is to manage", she says. But increasingly, she feels, they do everything but that. (10) That's because this, the identification of problems and opportunities, is the scariest part of management. Managers try to avoid the anxiety it brings by simply applying the latest theory to any problem. (11) Managers should, she believes, confront these head-on.

It is not that Ms Shapiro does not believe in cutting out unnecessary management layers and opening up organisations. Her criticism is that theories are often presented unthinkingly as solutions and are applied by managers who do not really understand what they are saying.

"Theories are often regarded as if they are some sort of miraculous cure for any type of problem", she says. "However, many projects have failed because theories have been applied which were not appropriate to the situation." (12) The blame for this inappropriate application of theories lies, she claims, mainly at the door of consultancy firms. It is difficult for big firms of consultants to specialise sufficiently. They cannot hope to offer exactly the service that a company requires at a price which the client is able to afford. (13) This is worse than having no help at all.

One of the most serious potential consequences of following theories without considering whether they are appropriate or not is a loss of staff morale and motivation. Obviously, this is something to be avoided. (14) However, Ms Shapiro believes that, unfortunately, unless managers begin again to take responsibility for their own actions that is exactly what will happen.

A. They therefore end up developing generalised solutions which are offered to clients regardless of an organisation's specific problems.

B. There are many firms of consultants offering help to companies.

C. No manager in their right mind would want to work with an angry, cynical or alienated workforce.

D. Just because a course of action has succeeded in one context, it does not mean it will be right in other circumstances.

E. From 'mission statements' to 're-engineering' she shows how one theory has replaced another in quick succession.

F. But in doing so, they often fail to address the real issues.

G. They fail to tackle the central management task, which is diagnosis.

H. They therefore no longer have the courage or the ability to take responsibility for their decisions.

(9)

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第8题

Many theories for predicting the relationship between cause and effect ______.A．testify th

Many theories for predicting the relationship between cause and effect ______.

A．testify their complete conformity with general scientific principles

B．justify the identity of dependent, independent, and intervening variables

C．specify the time periods of bodily cycles in terms of psychological tests

D．verify their prediction by variables inconsistent with conventions of science

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第9题

The main purpose of the text is toA．introduce some theories about alcoholism.B．help alcoho

The main purpose of the text is to

A．introduce some theories about alcoholism.

B．help alcoholics and others to understand the cause of alcoholism.

C．explain the application of a psychological approach to alcoholism.

D．show the most effective new treatment of alcoholism.

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第10题

Many Native Americans closely resemble Asians. This has led most scientists to （1) believe somet

Many Native Americans closely resemble Asians. This has led most scientists to(1)believe something about Native Americans. They think that most Native Americans(2)from a distant group of people. These people(3)from Siberia across the Bering Strait, between 17,000-11,000 years ago. The exact time and 4 is still under question. That is, it is still a(n)(5)of debate. The time they traveled and the route they took is still being argued, as is whether it happened(6).

(7)recently, some anthropologists (人类学家) argued that the migration occurred 12,000 years ago. However, there are a number of difficulties with this theory —(8)particular, the presence of people in the Americas earlier than one might think. There is growing evidence of human(9)in Brazil and Chile 11,500 years ago or earlier. There is also(10)of humans living in the Americas some 50,000 years ago.(11), other possibilities have been suggested.

They may have(12)the land bridge several thousand years earlier or they may have sailed along the western coast. However, some(13)this theory. They think that humans(14)skills for sailing during that era.

Some consider the genetic and cultural evidence for an Asian origin overwhelming. It should be noted,(15), that some other people are very upset at this idea. Many present-day Native Americans(16)the above theories. They say those who put forward such theories have political(17)They have their own traditional stories that offer(18)of where they came from. Their own stories claim that their(19)are different from what scientists say. Those accounts, though, have mostly been(20)by scholars. Therefore, the origin of Americans still remains a mystery to be explored.

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