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"What courses are you going to do next semester?""I don't know. But it's about time ______ on something."
A.I'd decide B.I decided C.I decide D.I'm deciding
"What courses are you going to do next semes">
"What courses are you going to do next semester?""I don't know. But it's about time ______ on something."
Kepler reconciled astronomy with physics, and substituted for fictitious clockwork a universe of material bodies not unlike the earth, freely floating and turning in space, moved by forces( ).
The belief that the mind plays an important role in physical illness goes back to the earliest days of medicine. From the time of the ancient Greeks to the beginning of the 20th century, it was generally accepted by both physician and patient that the mind can affect the course of illness, and it seemed natural to apply this concept in medical treatments of disease. After the discovery of antibiotics, a new assumption arose that treatment of infectious or inflammatory disease requires only the elimination of the foreign organism or agent that triggers the illness. In the rush to discover antibiotics and drugs that cure specific infections and diseases, the fact that the body’s own responses can influence susceptibility to disease and- its course was largely ignored by medical researchers.It is ironic that research into infectious and inflammatory disease first led 20th-century medicine to reject the idea that the mind influences physical illness, and now research in the same field — including the work of our laboratories and of our collaborators at the National Institutes of Health 一 is proving the contrary. New molecular and pharmacological tools have made it possible for us to identify the intricate network that exists between the immune system and the brain,a network that allows the two systems to signal each other continuously and rapidly. Chemicals produced by immune cells signal the brain, and the brain in turn sends chemical signals to restrain the immune system. These same chemical signals also affect behavior and the response to stress. Disruption of this communication network in any way, whether inherited or through drugs, toxic substances or surgery, exacerbates the diseases that these systems guard against: infectious, inflammatory, autoimmune, and associated mood disorders.The clinical significance of these findings is likely to prove profound. They hold the promise of extending the range of therapeutic treatments available for various disorders, as drugs previously known to work primarily for nervous system problems are shown to be effective against immune maladies, and vice versa. They also help to substantiate the popularly held impression (still discounted in some medical circles) that our state of mind can influence how well we resist or recover from infectious or inflammatory diseases.The brain’s stress response system is activated in threatening situations. The immune system responds automatically to pathogens and foreign molecules. These two response systems are the body’s principal means for maintaining an internal steady state called homeostasis. A substantial proportion of human cellular machinery is dedicated to maintaining it.When homeostasis is disturbed or threatened, a repertoire of molecular, cellular and behavioral responses comes into play. These responses attempt to counteract the disturbing forces in order to reestablish a steady state. They can be specific to the foreign invader or a particular stress, or they can be generalized and nonspecific when the threat to homeostasis exceeds a certain threshold. The adaptive response may themselves turn into stressors capable of producing disease. We are just beginning to understand the interdependence of the brain and the immune system, how they help to regulate and counter-regulate each other and how they themselves can malfunction and produce disease.
1.The passage supplies information to suggest that ()2.Which of the following best states the mind-body interaction in disease?3.Which of the following statements about clinical significance of the new findings can be bestsupported by the passage?4.Which of the following statements can be inferred from the passage?5.According to the passage, in order to maintain an internal steady state called homeostasis,( ).
A.it has always been the belief of both physician and patient that one’s state of mind can affectphysical disease B.the popular belief that stress exacerbates inflammatory illness has always been discredited by thedoctors C.the discovery of antibiotics sheds light on peop1.Which of the following is "an illusion"?
2.Many researchers are currently trying to ______.
3.The cutist prejudice probably refers to the fact that ______.
'>For a nation of pet lovers, Britain conducts a surprising number of experiments on animals some 3 m a year. America appears to use fewer animals—just 1.1 m a year, according to official statistics—but that is an illusion. Unlike Britain's government, America's does not think rats and mice worth counting. Japan and China have even less comprehensive data than America, and animals used in research in those two countries are not protected to the same extent that they are in the West. Even so, academic centers supporting alternatives to animal testing have emerged in both places in recent years. In July China issued its first set of guidelines governing the use of animals in research.In an ideal world, there would be no animal testing. It is expensive and can be of dubious scientific value, since different species often react differently to the same procedure. That is why many researchers are working on ways of reducing the number of animal experiments needed and of making those that still happen more effective. However, the transition is proving easier for some types of experiment than for others, as a group of researchers in the field discussed at the sixth World Congress on Alternatives and Animal Use in the Life Sciences, held last week in Tokyo.The most important message from the congress was that things are going in the right direction. The number of animals used in experiments has fallen by half in the past 30 years, at least in those countries that record such things. There has also been a shift in the sort of animal used. Most of those employed today are rodents rather than dogs, cats, rabbits and monkeys. (That public opinion generally welcomes this is, however, a good example of "cutist" pre
There are too many complaints about society having to move too fast to keep up with the machine.
( ) sermons retained their preeminence in religious life during most of the twentieth century, they are gradually losing that central places as churches devote more energy to social activities.