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1、2022-2023年广东省潮州市大学英语6级大学英语六级知识点汇总（含答案）学校:_ 班级:_ 姓名:_ 考号:_一、2.Reading Comprehension (Skimming and Scanning)(20题)1.The way a lot of researchers use to study anxiety is by _.2.People with social anxiety disorder have a _ of being watched and judged by others and of doing things that will embarrass them
2、.3.Higher-income households purchased less _ RTE cereal than low-income house-holds.4. According to the passage, many people who travel overseas expect to_.A.see the locals living in a primitive wayB.learn technology developed by foreignersC.challenge the stereotype about their motherlandD.experienc
3、e changes taking places in another country5.The ice tongue growing out from the Greenland coast used to reject salt back into the water, making _ heavier and helping it to sink.6.The developed nations will make more efforts to increase their population growth.A.Y B.N C.NG7.It may take large bodies o
4、f water and ice decades to respond to changes in temperature.A.Y B.N C.NG8.To babies from birth to six months of age, the preferred food is_as it contains many protective and immunological factors.9. 4G wireless communication can take the place of _ to send images back to central command center.10.O
5、Donnell thinks that the cause of her 22-year-old sons suicide is _.11.According to some researchers, _ in the body can give rise to. certain mental changes.12.The Science of AnxietyAll animals, especially the small kind, appear to feel anxiety. Humans have felt it since the days they shared the plan
6、et with saber-toothed tigers. But we live in a particularly anxious age. A recent study found that eight months after the September 11 event, nearly two-thirds of Americans think about the terror attacks at least several times a week. And it doesnt take much for all the old fears to come rushing bac
7、k. What was surprising about the recent drumbeat of terror warnings was how quickly it triggered the anxiety so many of us thought we had put behind us.This is one of the mysteries of anxiety. While it is a normal response to physical danger and can be a useful tool for focusing the mind when theres
8、 a deadline looming-anxiety becomes a problem when it persists too long beyond the immediate threat. Sometimes theres an obvious cause. Other times, we dont know why we cant stop worrying.Anxiety disorderwhich is what health experts call any anxiety that persists to the point that it interferes with
9、 ones lifeis the most common mental illness in the US which in its various forms, afflicts 19 million Americans.In recent years, researchers have made significant progress in nailing down the underlying science of anxiety. In just the past decade, they have come to appreciate that whatever the facto
10、rs that trigger anxiety, it grows out of a response that is rooted in our brains. They have learned, among other things:-There is a genetic component to anxiety; some people seem to be born worriers.-Brain scans can reveal differences in the way patients who suffer from anxiety disorders respond to
11、danger signals.-Due to a shortcut in our brains information-processing system, we can respond to threats before we become aware of them.-The root of an anxiety disorder may not be the threat that triggers it but a breakdown in the mechanism that keeps the anxiety response from careering out of contr
12、ol.Before we dig into the latest research, lets define a few terms. Though we all have our own intuitive sense of what the words stress and fear mean, scientists use these words in very specific ways. For them, stress is an external stimulus that signals danger, often by causing pain. Fear is the sh
13、ort-term response such stresses produce in men, women or lab rats. Anxiety has a lot of the same symptoms as fear, but its a feeling that lingers long after the stress has lifted and the threat has passed.In general, science has a hard time pinning down emotions because they are by nature so slipper
14、y and subjective. Most people are as clueless about why they have certain feelings. But fear is the one aspect of anxiety thats easy to recognize. Humans break out in a cold sweat. Heartbeats race, and blood pressure rises. That gives scientists something they can control and measure.Indeed, a lot o
15、f what researchers have learned about the biology of anxiety comes from scaring rats and then cutting them open. The researchers destroy small portions of the rats brains to see what effect that has on their reactions. By painstakingly matching the damaged areas with changes in behavior, scientists have, bit by bit, created a road map of fear as it travels through the rats brain.The journey begins when a rat feels the stress, in this case an electric shock. The rats senses immediately send a message to the central portion of its brain, where the stimulus activates two neu
