All of us cannot live_______air or water.

43 Which of the following networking methods allows us to show that the last 10% of one element cannot be completed until 62% of a previous element has been completed？

A. PERT

B. ADM

C. PDM

D. All of the above.

E. A and C only.

161 Which of the following networking methods allows us to show that the last 10% of one element cannot be completed until 62% of a previous element has been completed？

A. PERT

B. ADM

C. PDM

D. All of the above.

E. A and C only

A.Historical and geographical features of where they liv

B.Climate features of where they liv

C.Their ways of lif

D.All of the above answers are correct.

A.We pollute Mother Earth in pursuing a better life,which, consequently, hurts ourselves

B.We are never satisfied with what we have, and we do not make good use of natural resources

C.If Mother Earth is ill, we, as her children, cannot live a complete life

D.Though we have created the environmental problem, we try to separate ourselves from it

Passage Three

When it comes to singling out those who have made a difference in all our lives, you cannot overlook Henry Ford. A historian a century from now might well conclude that it was Ford who most influenced all manufacturing, everywhere, even to this day, by introducing a new way to make cars--one, strange to say, that originated (超源于) in slaughterhouses (屠宰场).

Back in the early 1900's, slaughterhouses used what could have been called a "disassembly line". Ford reversed this process to see if it would speed up production of a part of an automobile engine called a magneto (磁电机). Rather than have each worker completely assemble a magneto, one of its elements was placed on a conveyer, and each worker, as it passed, added another part to it, the same one each time. Professor David Hounshell of the University of Delaware, an expert on industrial development, tells what happened.

"The previous day, workers carrying out the entire process had averaged one assembly every 20 minutes. But on that day, on the line, the assembly team averaged one every 13 minutes and 10 seconds per person."

Within a year, the time had been reduced to five minutes. In 1913, Ford went all the way. Hooked together by ropes, partially assembled vehicles were pulled past workers who completed them one piece at a time. It wasn't long before Ford was turning out several hundred thousand cars a year, a remarkable achievement then. And so efficient and economical was this new system that he cut the price of his cars in half, to ＄260, putting them within reach of all those who, up until that time, could not afford them. Soon, auto makers the world over copied him. In fact, he encouraged them to do so by writing a book about all of his innovations (革新), entitled Today and Tomorrow. The Age of the Automobile has arrived. Today, everything from toasters to perfumes is made on assembly lines.

To what extent does the writer agree with the historian a century from now？

A．He agrees only slightly.

B．He agrees almost completely.

C．He almost disagrees.

D．He disagrees completely.

11. A. the number

B. a number

C. number

D. numbers

A scientist is apt to think that all the problems of philosophy will ultimately be solved by science. I think this is true for a great many of the questions on which philosophers still argue. For example, Plato thought that when we saw something, one ray of light came to it from the sun, and another from our eyes and that seeing was something like feeling with a stick. We now know that the light comes from the sun, and is reflected into our eyes. We don't know in much detail how the changes in our eyes give rise to sensation. But there is every reason to think that as we learn more about the physiology of the brain, we shall do so, and that the great philosophical problems about knowledge are going to be pretty fully cleared up.

But if our descendants know the answers to these questions and others that perplex us today, there will still be one field of which they do not know, namely the future. However exact our science; we cannot know it as we know the past. Philosophy may be described as argument about things of which we are ignorant. And where science gives us a hope of knowledge it is often reasonable to suspend judgment. That is one reason why Marx and Engels quite rightly wrote to many philosophical problems that interested their contemporaries.

But we have got to prepare for the future, and we cannot do so rationally without some philosophy. Some people say we have only got to do the duties revealed in the past and laid down by religion, and god will look after the future. Others say that the world is a machine and the course of future events is certain, whatever efforts we may make. Marxists say that the future depends on ourselves, even though we are part of the historical process. This philosophical view certainly does inspire people to very great achievements. Whether it is true or not, it is powerful guide to action.

We need a philosophy, then, to help us to tackle the future. Agnosticism easily becomes an excuse for laziness and conservatism. Whether we adopt Marxism or any other philosophy, we cannot understand it without knowing something of how it developed. That is why knowledge of the history of philosophy is important to Marxists, even during the present critical days.

What is the main idea of this passage？

A．The argument whether philosophy will ultimately be solved by science or not.

B．The importance of learning philosophies, especially the history of philosophy.

C．The difference between philosophy and science.

D．A discuss about how to set a proper attitude towards future.

Whatever it' s underlying reasons, there is no doubt that much of the pollution caused could be controlled if only companies, individuals and governments would make more efforts In the home there is an obvious need to control litter and waste Food comes wrapped up three or four times in packages that all have to be disposed of: drinks are increa singly sold in bottles or tins which cannot be reused.This not only causes a litter problem, but also is a great waste of resources, in term of glass metals and paper.Advertising has helped this process by persuading many of us not only to buy things we neither want nor need, but also to throw away much of what we do buy Pollution and waste combine to be a problem everyone can help to solve by cutting out unnecessary buying, excess consumption and careless disposal of the products we use in our daily lives.

21.The main cause of pollution is

A the release of artificial or natural substances into the envIronment

B.the production of new industrial goods

C.increased amounts of a natural substance

22.Much of the pol lut ion could be controlled if only

A.people would pay more attention to the problem

B.governments would take effective measures

C.all sides concerned would make more efforts

23.Food packages, bottles and tins for drinks can cause

A.air and water pollution

B.both a litter problem and a waster of resources

C.to pay for the service

24.Which of the following cannot help solving the problem of pollution？()

A.Cutting out unnecessary buying

B.Eating.

C.Reduce excess us

25.What does the underlined word "litter" mean in Para.2？()

A.not many

B.serious problem

C.bits of waste things