(Question)
Read the article and select the best answer. Article: Surfing--the art of riding a wave on a pointed board--is the wildest, fastest natural water sport known to man. In recent years, it has developed into a major sport around the world, from Australia to South Africa. Australians brave men--eating sharks to ride the green waves Down Under, Hawaiian experts risk(...) their lives on huge, thirty foot swells against the wind of Oahu; Californians of all ages go out the year-round. In the winter, surf-riders put on life-suits to ride grave waves so cold that their flesh turns blue. Surfing is no sport for weak persons. Swimming a quarter of a mile or more, and pushing a surfboard out to where the swells are just right for riding, can be real work. Then, at exactly the right moment, you climb up the wave and go fast across the face of a powerful swell with the white water jumping at your feet. The huge wave bites at your shoulder, threatening at any moment to smash your flat. In the next several seconds, a cool head and lightning--quick action back to the pressure of the attacking wave will bring your board under control for that great ride down the back of the great, green mountain of water. Once on the beach, you know why surfing is growing in popularity as an international sport, and you're glad to be a member of this new water world. Question: In order to experience what real surfing is, _ . Options: A: you must first swim a quarter of a mile to warm your body B: you will first ride on a board to reach the swells C: you must first put on your life-suits before doing surfing D: you must first swim to the swells with your board
(Answer)
D

(Question)
Read the article and select the best answer. Article: Every fall, like clockwork, Linda Krentz of Beaverton, Oregon, felt her brain go on strike. "I just couldn't get going in the morning," she says. "I'd get depressed and gain 10 pounds every winter and lose them again in the spring." Then she read about seasonal affective disorder, a form of depression that occurs in fall and winter, and she saw the light literally. Every morning now she turns on a specially constructed light box for half an hour and sits in front of it to trick her brain into thinking it's still enjoying those long summer days. It seems to work. Krentz is not alone. Scientists estimate that 10 million Americans suffer from seasonal depression and 25 million more develop milder versions. But there's never been definitive proof that treatment with very bright lights makes a difference. After all, it's hard to do a double-blind test when the subjects can see for themselves whether or not the light is on. That's why nobody has ever separated the real effects of light therapy from placebo effects. Until now, in three separate studies published last month, researchers report not only that light therapy works better than a placebo but that treatment is usually more effective in the early morning than in the evening. In two of the groups, the placebo problem was resolved by telling patients they were comparing light boxes to a new anti-depressant device that gives off negatively charged ions . The third used the timing of light therapy as the control. Why does light therapy work? No one really knows. "Our research suggests it has something to do with shifting the body's internal clock," says psychiatrist Dr. Lewey. The body is programmed to start the day with sunrise, he explains, and this gets later as the days get shorter. But why such subtle shifts make some people depressed and not others is a mystery. That hasn't stopped thousands of winter depressives from trying to heal themselves. Light boxes for that purpose are available without a doctor's prescription. That bothers psychologist Michael... Question: What is psychologist Michael Terman's major concern? Options: A: Winter depressives will be addicted to using light boxes. B: No mental patients would bother to consult psychiatrists. C: Bad light boxes will give off harmful ultraviolet lights. D: Light therapy could be misused by certain mental patients.
(Answer)
D

(Question)
Read the article and select the best answer. Article: Does school start too early? Judging from the teenagers who yawn in class, it does. And those students aren't just lazy. Scientific studies have shown that school does start too early for young students. According to a series of studies done across the U.S., the later classes begin, the more academic performance improves. Boys and girls naturally stay up later and sleep in later. The trend begins around age 13 or 14 and peaks between 17 and 19.The teens also need more sleep in general, so forcing them to be up early for school cuts into their sleep time as well as their sleep rhythm, making them less ready to learn during those first-period classes. Practice is proving the science. Hundreds of school districts in the U.S. have experimented with later start times and the academic performance of students has improved as a result. A study of 9,000 high school students in three states showed that grades in science, math, English and social studies all rose when school began at 8:35 or later. What's more, attendance goes up and student depression goes down. The later school starts, the better the result, too. According to a study, delaying the opening bell from 7:30 a.m. to 8:30 a.m. paid off more than delaying only until 8:00 a.m. Students who get at least eight hours of sleep, and preferably nine, perform better than those who do not, so a greater delay raises the chances of achieving those numbers. So, it turns out morning class is just too early for students to learn chemistry equations or study an ancient poem. If you cannot change the school schedule, adjusting your own timetable to ensure eight hours' sleep can also help you perform better at school. Question: It is implied in the passage that in the morning _ . Options: A: there should be no classes B: students' sleep should be guaranteed C: there should be Chinese lessons D: there should be no science lessons
(Answer)
D