题目内容
The fact that blind people can "see" things using other parts of their bodies apart from their eyes may help us to understand our feelings about color. If they can sense color differences, then perhaps we, too, are affected by color unconsciously.
Manufacturers have discovered by trial and error that sugar sells badly in green wrappings, that blue foods are considered unpleasant, and the cosmetics should never be packaged in brown. These discoveries have grown into a whole discipline of color psychology that now finds application in everything from fashion to interior decoration. Some of our preferences are clearly psychological. Dark blue is the color of the night sky and therefore associated with passivity and calm, while yellow is a day color with associations of energy and incentive. For primitive man, activity during the day meant hunting and attacking, while he soon saw as red, the color of blood and rage and the heat that came with effort. And green is associated with passive defence and self-preservation. Experiments have shown that colors, partly because of their physiological associations, also have a direct psychological effect. People exposed to bright red show an increase in heartbeat, and blood pressure; red is exciting. Similar exposure to pure blue has exactly the opposite effect; it is a calming color. Because of its exciting connotations, red was chosen as the signal for danger, but closer analysis shows that a vivid yellow can produce a more basic state of alertness and alarm, so fire engines and ambulances in some advanced communities are now rushing around in bright yellow colors.
Manufacturers found out that color affects sales______.
查看答案
搜索结果不匹配？点我反馈
更多问题
Before his death last year, Professor Talline decided that he _________ leave $100,000 to
The National Geographic Society headquarters, _________ in Washington,D.C , is well- known
On the long list of worries that Mom and Dad have when a child goes to college-grades, home-sickness, partying there's a new issue gaining prominence: the apparent rise in mental illness on campus. More than 1,100 college students commit suicide each year, according to estimates by mental-health groups. And even when students aren't in acute distress, they're suffering in surprisingly large numbers. In a 2003 survey by the American College Health Association, more than 40 percent of students reported feeling "so depressed that it was difficult to function" at least once during the year. Thirty percent identified themselves as suffering from an anxiety disorder or depression.
While there is debate over why the numbers seem to be rising, there's also concern that colleges aren't dealing with the problem adequately. In January 2004 the Crimson, Harvard's student newspaper, published a widely discussed five-part series which concluded that "an overwhelming majority" of Harvard undergraduates experience mental-health problems, and that the university's shortcomings in helping them were creating "a pervasive mental-health crisis" on the campus.
Given that kind of assessment, it's inevitable that mental-health issues are starting to filter into admissions conversations. One counselor at an East Coast private high school says that during the 2003-04 admissions cycle, officials from two colleges confided they were particularly focused on admitting a class that was "rock solid" emotionally-both to help prevent suicides and to reduce the toll on overbooked school therapists. MIT Admissions Dean Marilee Jones says she's looking to enroll "emotionally resilient" students. "If we think someone will crumble the first time they do poorly on a test, we're not going to admit them," she says. "So many kids are coming in, feeling the need to be perfect, and so many kids are medicated now. If you need a lot of pharmaceutical support to get through the day, you're not a good match for a place like MIT."
Since the admissions process requires students to appear flawless, many families avoid disclosing a child's history of emotional problems, especially before they get an acceptance letter. How-ever, parents are starting to ask tough questions about just which kind of mental-health services they can expect from schools. Those inquiries become particularly acute at colleges that suffer high-pro-file student suicides.
The main idea of the passage is _______.
Nuclear Power and Its Danger
Nuclear power's danger to health, safety, and even life itself can be summed up in one word: radiation.
Nuclear radiation has a certain mystery, about it, partly because it cannot be detected by human senses. It can't be seen or heard, or touched, or tasted, even though it may be all around us. There are other things like that. For example, radio waves are all around us but we can't detect them, sense them, without a radio receiver. Similarly, we can't sense radioactivity without a radiation detector. But unlike common radio waves, nuclear radiation is not harmless to human beings and other living things.
At very high levels, radiation can kill an animal or human being outright by killing masses of cells in vital organs. But even the lowest level of radiation can do serious damage. There is no level of radiation that is completely safe. If the radiation does not hit anything important, the damage may not be significant. This is the case when only a few cells are hit, and if they are killed outright. Your body will replace the dead cells with healthy ones. But if the few cells are only damaged, and if they reproduce themselves, you may be in trouble. They reproduce themselves in a deformed way. They can grow into cancer. Sometimes this does not show up for many years.
This is another reason for some of the mystery about nuclear radiation. Serious damage can be done without the victim being aware at the time that damage has occurred. A person can be irradiated and feel fine, then die of cancer five, ten, or twenty years later as a result. Or a child can be born weak or liable to serious illness as result of radiation absorbed by its grandparents.
Radiation can hurt us. We must know the truth.
According to the passage, the danger of nuclear power lies in______.
微信支付 
支付宝支付