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The National Geographic Society headquarters, _________ in Washington,D.C , is well- known
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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______.
The underlined word "significant" in paragraph 3 most probably means______.
Famous American Foods
What, besides children, connects mothers around the world and across the seas of time？ It's chicken soup, one prominent American food expert says.
From Russian villages to Africa and Asia, chicken soup has been the remedy for those weak in body and spirit. Mothers passed their knowledge on to ancient writers of Greece, China and Rome, and even 12th century philosopher and physician Moses Maimonides extolled (赞美)its virtues.
Among the ancients, Aristotle thought poultry should stand in higher estimation than four-legged animals because the air is less dense than the earth. Chickens got another boost (吹捧)in the Book of Genesis, where it is written that birds and fish were created on the fifth day, a day before four-legged animals.
But according to Mimi Sheraton, who has spent much of the past three years exploring the world of chicken soup, much of the reason for chicken's real or imagined curative (治愈的)powers comes from its color.
Her new book, "The Whole World Loves Chicken Soup", looks at the beloved and mysterious brew, with dozens of recipes from around the world. Throughout the ages, she said, "There has been a lot of feeling that white-colored foods are easier to eat for the weak woman and the ill".
In addition, "soups, or anything for that matter eaten with a spoon" are considered "comfort foods" Sheraton said. "I love soup and love making soup and as I was collecting recipes I began to see this as an international dish. It has a universal mystique as something curative, a strength builder," Sheraton said from her New York home.
Her book treats the oldest remedy as if it was brand new.
The National Broiler Council, the trade group representing the chicken industry, reported that 51 percent of the people it surveyed said they bought chicken because it was healthier, 50 percent said it was versatile, 41 percent said it was economical and 46 percent said it was low in fat.
Which of the following can be the best title of the passage？ ______
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