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Life, like science and art, is a theory about the world: a theory that in our case takes b
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Science and Human Life
In modern times science to human beings is like food to our bodies. ____________
But when it is wrongly used, its destructive power is uncontrollable and terrible. ____________
People are trying hard to make better use of science. ____________
Chronobiology might sound a little futuristic – like something from a science fiction novel, perhaps – but it’s actually a field of study that concerns one of the oldest processes life on this planet has ever known: short-term rhythms of time and their effect on flora and fauna. This can take many forms. Marine life, for example, is influenced by tidal patterns. Animals tend to be active or inactive depending on the position of the sun or moon. Numerous creatures, humans included, are largely diurnal – that is, they like to come out during the hours of sunlight. Nocturnal animals, such as bats and possums, prefer to forage by night. A third group are known as crepuscular: they thrive in the low-light of dawn and dusk and remain inactive at other hours. (摘选自雅思学术阅读训练题) Guess the meaning of the underlined words. Q1: Futuristic means:
A、Advanced technology
B、Science fiction technology
C、Scientific
D、/
听力原文: Science has told us so much about the moon that it is quite easy to form. an idea of what it would be like to go there. It is certainly not a friendly place. As there is no air or water, there can be no life of any kind. Mile after mile there are only plains of dust with mountains around them. Above, the sun and stars shine in a black sky. If you step out of the mountain shadows, it will mean moving from terrible could in to great heat. The moon is also a very' silent world, for sound waves can only travel through air. But from the moon, you can see a friendly sight. Our earth is shining more brightly than the stars. It looks like a huge ball, colored blue and green and brown.
(30)
A.It's a lovely place.
B.It's a friendly place.
C.It's a nice place for man to live.
D.It's a lifeless place.
The greatest scientific dead of her life—proving the existence of radioactive elements and isolating them—owes its accomplishment not under the most extreme hardships imaginable, such as the history of experimental science has not often witnessed.
If but a small part of Mme. Curie's strength of character and devotion were alive in Europe's intellectuals, Europe would face a brighter future.
Which expression is NOT true according to the conversation?
A.Biology is an exact science.
B.Robotics is a branch of science.
C.Science may also bring about disasters.
D.Science is knowledge of facts and laws.
听力原文: Good morning. I' d like to welcome you to your first yoga class. Before we begin our exercises, it is important that we undid a few facts about yoga. First of all, it is not a religion. Yoga is a way of life and can serve only to improve your present way of life. Yoga is an exact science and a delicate art. Secondly, be as methodical and mechanical as possible. Never tug, swain, or pull strenuously. Forcing will cause your body to resist and will actually slow down or even prevent your progress. Go gently, stretch up to the point where it would start to hurt, and then stop immediately. The key is proper breathing through the nostrils with the mouth shut. Many times it is best to practice alone in a well-ventilated room, preferably wearing little or no clothing. Never practice on a full stomach because an empty one permits greater flexibility. Exercise will benefit your general health. Yoga cannot add or subtract pounds from your figure; only eating more or less food, that is, increasing or decreasing your caloric intake, can do that. Always member that diet affects weight, while exercise affects shape. Neither can do the job of the other. Now, Let's begin with our first yoga exercise.
According to the speaker, yoga should NOT be described as ______
A.a delicate art
B.a religion
C.an exact science
D.a way of life
M: Yes, well, I've been looking into the ability of certain animals to freeze themselves for a certain amount of time, and then to come back to life when the circumstances around them change. And, what I've been working on over the past two years is the particular process that enables them to do this.
W: What have you actually discovered?
M: I think it's a particular chemical in the animals' bodies which begins to work under certain circumstances. And I'm now experimenting with this chemical to see if I can get other animals that wouldn't normally be able to freeze themselves to be able to do this.
W: Have you had any success?
M: I have so far. It's been going very well. And I'm reasonably confident that perhaps within ten years from now I'll be able to freeze human beings for as long or as short a time as I would like to, and then bring them back to life again in exactly the same state that they were in before they were frozen ... just as you can do with animals.
W: And what's the main application of your research?
M: I think the main application of this for human beings would be for people with terminal illnesses, such as certain types of cancer, AIDS. we could freeze them, find a cure for the illness and then bring them back to life again and administer the cure.
W: I see. Well, this obviously is going to create great debate I would think as to the rights and wrongs of whether we should be actually doing this.
What does Professor Morgan do?
A.He is a film director of Science Fiction.
B.He is a writer of Science Fiction.
C.He is a scientist who researches on how to freeze a body and bring it back to life later.
D.He is a doctor who treats terminal illnesses.
Message to young Chinese in the 21 st century
Fundamental Science has provided us with an increasingly detailed and accurate understanding of Nature and the world around us. Progress in Science is based on the premises that:
Everything, including existing knowledge, is open to critical, unprejudiced inquiry. Science is often built on the destruction of existing paradigms and is a continuously evolving process.
Our minds, reason, and our powers of observation are the tools we use to advance knowledge. There are no mysteries that will resist scientific investigation.
Science is the property of mankind and not of any one nation or people and is our most precious human asset.
Scientists have been extremely successful in the last century in all fields, physics, chemistry, biology, and genetics.Their discoveries have had a dramatic impact on medicine and our life pattern. We are gaining the power but not necessarily always the wisdom to control our lives, our environment, our fate on this earth and galaxy.
In my own field, immunology, a division of biomedical science, it has been my privilege to witness in the last 40 years spectacular advances. The cells of the immune system have been identified, the specific molecules they produce, (antibodies, cell receptors, transplantation antigens, lymphokines ) have been purified and sequenced and the genes that code for them have been cloned.
Such basic knowledge is being translated into increasing benefits to health through applied technology and should soon contribute to vaccine development against AIDS and cancer. Enormous advances have similarly been made in other areas of biomedical science, with the discovery of the structure of nucleic acids, the genetic code, the control of growth and differentiation at the cellular level, which should soon permit the development of new generations of therapeutic drugs against cancer.
Of my own work in the laboratory over the last 45 years, I would like to share with you two of the most exciting aspects which are very well worth the years of efforts and the difficulties encountered. These are:
The exhilarating feeling that one experiences when Nature, for the first time, reveals its closely guarded secrets, and one begins to finally understand some of the complexities that have eluded us for many years.
The warm and intimate intellectual relationships that are established between teacher and student in the laboratory in the course of conducting research together, which constitute the. training process. I have had the pleasure and personal gratification of training in my laboratory more than 80 younger scientists, many of whom have made very successful careers, and made important contributions themselves. Several of my students have been of Chinese descent.
What about the future? I am convinced that the future will be even more exciting than the past. As I told my grandson, I very much envy him and I would like to be his age and have the opportunity to become again a scientist, starting in another field, and to have a chance to push further the frontiers of knowledge. I urge many of you, who read these line, to do the same. Science is a very exciting experience as well as a worthwhile life goal, because only those undertakings that challenge us to develop our minds and energies to attempt the unattainable are worthy of us.
If I had been given the chance to live another life as a scientist in the 21st century I would study the brain and investigate the mechanism of consciousness, reasoning, logic and memory, and I would try to understand how this marvelous machine, that evolution has developed, is capable of analyzing itself and of understanding the world and reality. This is the ultimate challenge, which I dare you to devote your life to, and to solve for the glory and benef
A.Y
B.N
C.NG
听力原文: Science fiction writers have often imagined human beings going to live on Mars. But these days scientists are taking the idea seriously. It has a great deal to recommend it since it might solve the problem of overcrowding on the earth, but obviously it would not be worth making the effort unless people could live there naturally. If the were like that of Earth, this might be possible. But m fact, it s mostly carbon dioxide(CO2). Apart from that, there are other problems to be overcome. For example, the temperature would have to be raised from 60~C below zero to 15~C above it. Scientists who study Mars have laid down the program that they can follow. To begin with, they will have to find out whether life has ever existed on planet Mars in the past. Secondly, they will have to make a reliable map of its surface, and finally they will have to make a list of the gases. Above all, they will have to discover how much nitrogen it possesses, since nitrogen is four-fifths of the air we breathe. They're surprisingly optimistic about raising the temperature on Mars and believe it could be done in 200 years. It would take a bit longer, though, to transform. the atmosphere so that human beings could live there. Scientists estimate that this will take 100,000years.
(33)
A.Because people might have to migrate there someday.
B.Because it is very much like the earth.
C.Because it is easier to explore than other planets.
D.Because its atmosphere is different from that of the earth.
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