For as long as humans have raised crops as a source of food and other products, insects ha
A.corn borer
B.Japanese beetle
C.gypsy moth
D.fire ant
A.corn borer
B.Japanese beetle
C.gypsy moth
D.fire ant
In the long run, environmentalists argue, nuclear energy wastes valuable resources and disturbs the ecology to an extent which could bring about the destruction of the human race.
What is the great advantage of robots over human workers?
A.They are much cheaper than humans.
B.They never complain about the difficulties.
C.They can handle all the problems of the job.
D.They can work for long periods without rest.
It is human, perhaps, to appreciate little that which we have and to long for that which we have not, but it is a great pity that in the world of light the gift of sight is used only as a mere convenience rather than as a means of adding fullness to life.
But that, Pearson points out, is only the start of man-machine integration: "It w
But that, Pearson points out, is only the start of man-machine integration: "It will be the beginning of the long process of integration that will ultimately lead to a fully electronic human before the end of the next century."
But that,Pearson points out,is only the start of man-machine integration:“It will be
But that,Pearson points out,is only the start of man-machine integration:“It will be the beginning of the long process of integration that will ultimately lead to a fully electronic human before the end of the next century.”
What conclusion can we get from the passage?
A.Engineering a perfect human is not feasible for the time being.
B.It's impossible for scientists to engineer a perfect tomato.
C.Many diseases will never be conquered by human beings.
D.Doctors will be able to cure all sorts of flaws in DNA in the long run.
It is the author's view that in human civilization agriculture______.
A.is the most important step man has ever made
B.is only less important than the discovery of fire
C.had long been practiced since 3000B.C.
D.can be ranked in importance with the invention of machines
听力原文: We are now living in a world in which robots are taking over much of the work.Robots make our cars, fly our planes and work out wages.
But these robots are not mechanical men and women.They do not look like us.They are machines specially built to do some of the things that human beings can.
Although they may not look like us,robots need some human features in order to be able to do human work.First of all they need some kind of brain.Their "brain" is a computer,which has a memory to human member instructions and ability to control other equipment.Another essential feature of many robots is an arm that can do the kind of things that human beings can with their arms.One-armed robots are now coming into widespread use in industry.They are being used,for example,on car assembly lines.
The great advantage of robots over human workers is that they can work non-stop for long periods. They never get tired,and always work with the same accuracy.They can also work in conditions that humans could not bear.Last but not least,as more robots are built,their cost will come down.
Although robots are rapidly taking over many jobs in industry, they seem a long way from taking over in the home. The problem is that it would take a very complex and costly robot to perform. half the tasks involved in housework.
According to the speaker,what can the present-day robots do?
A.Drive cars.
B.Fly planes.
C.Pay wages.
D.Repair machines.
A、Society is the sum of the relationships formed by living things and the environment
B、Human production, consumption, entertainment, politics, education, etc, all belong to the scope of social activities
C、Society refers to the organisms living together in a specific environment, which can be maintained for a long time and cannot be separated from each other. It is a kind of structure that cannot be easily changed
D、Society is a collection of individuals who live together united through a variety of relationships
I think it certain that in decades, not centuries, machines of silicon (硅) will arise first to rival and then exceed their human ancestors. Once they exceed us they will be capable of their own design. In a real sense they will be able to reproduce themselves. Silicon will have ended carbon’s long control. And we will no longer be able to claim ourselves to be the finest intelligence in the known universe.
As the intelligence of robots increases to match that of humans and as their cost declines through economies of scale we may use them to expand our frontiers, first on earth through their ability to withstand environments, harmful to ourselves. Thus, deserts may bloom and the ocean beds be mined. Further ahead, by a combination of the great wealth this new age will bring and the technology it will provide, the construction of a vast, man-created world in space, home to thousands or millions of people, will be within our power.
第16题:In what way can we make a machine intelligent?
A) By making it work in such environments as deserts, oceans or space.
B) By working hard for 10 or 20 years.
C) By either properly programming it or changing its structure.
D) By reproducing it.
Passage 2
When you think about the growth of human population over the last century or so, it is all too easy to imagine it merely as an increase in the number of humans. But as we _1_, so do all the things associated with us, including our livestock. At present, there are about 1.5 billion _2_ and domestic buffalo and about 1.7 billion sheep and goats. With pigs and poultry, they form. a _3_ part of our enormous biological footprint upon this planet. Just how enormous was not really _4_ until the publication of a new report, called “Livestock’s Long Shadow,” by the Food and Agriculture Organization of the United Nations. Consider these numbers. Global livestock grazing and feed production use “30 percent of the land surface of the planet.” Livestock—which consume more food than they _5_—also compete directly with humans for water. And the drive to expand grazing land destroys more biologically sensitive land, rain forests _6_, than anything else. But what is even more striking, and _7_, is that livestock are responsible for about 18 percent of the global warming effect, more than transportation’s _8_. Greenhouse gases, such as methane and nitrogen,are resulted from their digestion. Grazing land, which destroys forests, adds to the effect. There are no easy trade-offs when it comes to global warming—such as cutting back on livestock to make room for care. The human _9_ for meat is certainly not about to end anytime soon. As “Livestock’s Long Shadow” makes clear, our health and the health of the planet depend on pushing livestock production in more _10_ directions.
A)yield
B)contribution
C)stain
D)ideally
E)apparent
F)multiply
G)cattle
H)passion
I)scrape
J)critical
K)liable
L)sustainable
M)deposit
N)alarming
O)especially
第1空答案是: