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Diet, Alcohol Linked to Nearly One Third of CancersDiet is second only to tobacco as a leading (1) of cancer and，along with alcohol，is responsible for nearly one third of cases of the disease (2) developed countries, a leading researcher said on Tuesday.Dr. Tim Key, of the University of Oxford, told a cancer conference that scientists are still discovering how certain foods contribute to (3) , but they know that diet, alcohol and obesity (4) a major role."Five percent of cancers could be avoided (5) nobody was obese," he said.While tobacco is linked to about 30 (6) of cancer cases, diet is involved in all estimated 25 percent and alcohol (7) about six percent.Obesity raises the (8) of breast, womb, bowel and kidney cancer, while alcohol is known to cause cancers of the mouth, throat and liver. Its dangerous impact is (9) when combined with smoking.Key told the meeting of the charity Cancer Research UK (10) other elements of diet linked to cancer are (11) unknown but scientists are hoping that the EPIC study, which is comparing the diets of 500, 000 people in 10 countries and their risk of cancer, will provide some (12) Early results of the study have revealed that Norway, Sweden and Denmark have the (13) consumption of fruit and vegetables among European countries while Italy and Spain have the highest. Eating at (14) five portions of fruit and vegetables a day is recommended to reduce the risk of cancer.Key, principal scientist on the EPIC study, said it is looking at dietary links to some of the most common cancers (15) colorectal, breast and prostate. 62（）
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Road Trip Vacation It’s summer. In the United States, it’s the season of swimming pools, barbeques (户外烤肉), camping and road trips. Road trip vacations where the car Journey is part of the fun are especially with college students, who like to explore the country on wheels. These budget trips are ideal for students who often have plenty of free time but little money. "Ever since I went to college, I’ve been traveling around a lot, exploring the country." said Austin Hawkins, a 19-year-old college student from New York. This summer, Hawkins and his friends have spent weekends traveling in New England. The best part about car trips, said Hawkins, is that you can be spontaneous. "On a road trip, if you get interested in things you see along the way you can stop and explore." Matt Roberts, a 20-year-old student from Ohio Who drove to Montreal, Canada, agrees. "With road trips you don’t have to plan in advance, you can just get into a car and drive." Even with high gas prices, driving with friends is cheaper than flying. Roberts paid about 40 dollars for gas, but a round trip plane ticket would have cost nearly 400 dollars. Driving trips first became popular in the 1920s. Newly paved roads and improved cars made it possible to travel longer distances. Motels (洗车旅馆) started, apppearing outside cities. By the 1950s, car ownership became the norm. Construction of the US interstate (州) highway system began in 1956 and motel and restaurant chains popped up (突然出现) everywhere making long distance trips easier. Today, the US has the highest car ownership rate in the world. Only 8 percent of American homes have no ear, according to the most recent US census. Though many college students don’t own a car, most have access to one. On many of Hawkins’ trips, they used a borrowed van. Hawkins’ most memorable road trip took place over spring break. He and two friends drove from New York to New Orleans to volunteer, helping rebuild the city after Hurricane (风暴) Katrina hit it last July. They crossed the country in two days and slept in their car in church parking lots. Roberts’ road trip to Canada last winter was even more eventful. Upon arriving in Montreal, they were lost in a blizzard and shivering in the—25°cold. To find their hotel, they turned on a laptop (笔记本电脑) and drove around in circles until they found a spot with wireless Internet coverage. "I know we should have planned better, but we’re young. Now, when I see those guys I always say, ’Remember when we were lost in the snow storm! ’I’ll never forget that.\ Which of the following words can best describe Hawkins trip to New Orlends
女性患者，45岁，肥胖，无明显"三多"症状，空腹血糖7．3mmol/L，治疗首先考虑
鉴别甲状腺功能亢进和单纯甲状腺肿最有价值的一项是
注射用水是注射剂的溶剂，其检查( )
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