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Most Adults in U. S. Have Low Risk of Heart Disease More than 80 percent of US adults have a less than 10 percent risk of developing heart disease in the next 10 years, according to a report in the Journal of the American College of Cardiology. Just 3 percent have a risk that exceeds 20 percent. "I hope that these numbers will give physicians, researchers, health policy analysts, and others a better idea of how coronary heart disease is distributed in the US population, " lead author Dr. Earl S. Ford, from the Centers for Disease Control and Prevention in Atlanta, said in a statement. The findings are based on analysis of data from 13,769 subjects, between 20 and 79 years of age, who participated in the Third National Health and Nutrition Examination Survey from 1988 to 1994. Overall, 82 percent of adults had a risk of less than 10 percent, 15 percent had a risk that fell between 10 to 20 percent, and 3 percent had a risk above 20 percent. The proportion of subjects in the highest risk group increased with advancing age, and men were more likely than women to be in this group. By contrast, race or ethnicity had little effect on risk distributions. Although the report suggests that most adults have a low 10-year risk of heart disease, a large proportion have a high or immediate risk, Dr. Daniel S. Berman, from Cedars-Sinai Medical Center in Los Angeles, and Dr. Nathan D. Wong, from the University of California at Irvine, note in a related editorial. Aggressive treatment measures and public health strategies are needed to shift the overall population risk downward, they add. There was a greater proportion of men than women in the survey.

A. Right
B. Wrong
C. Not mentioned

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Ice Cream For Dogs1. Humans not only love eating ice cream, they enjoy feeding it to their pets(宠物). Market studies show that two-thirds of all dog owners give ice cream to their dogs. Unfortunately, says William Tyznik, an expert on animal nutrition(营养)at Ohio State University, ice cream is not good for dogs. "It has milk sugar in it," he says," which dogs cannot digest very well. "2. Bothered by that knowledge but aware of the desire of dog owners to please their companions, Tyznik invented a new frozen treat for dogs that, he says, is more nutritious than ice cream—and as much fun to eat. The product, called Frosty Paws, is made of a liquid by-product (副产品) of cheese and milk with the sugar removed. Frosty Paws also contains refined soy flour, water, vegetable oil, vitamins and minerals. It took Tyznik, who has also invented a horse feed (called Tizwhiz)and another dog food (named Tizbits), three years to perfect the Frosty Paws formulas, and two attempts to commercialize it. After losing B 25, 000 trying to market the invention himself, Tyznik sold the rights to Associated Ice Cream of Westervile, Ohio, which makes the product and packages it in cups.3. Tyznik claims that Frosty Paws has been tested extensively and that "dogs love it". Of 1,400 dogs that have been offered the product, he says, 89 percent took it on the first try. Three out of four preferred it to Milk-Bone or sausages. The product, which will be available in the ice-cream section of supermarkets, comes in packs of three or four cups, costing between 6 1. 79.4. What would happen if a human should mistake Frosty Paws for real ice cream Nothing, says Tyznik. Its harmless, but frankly, he says, it wont taste very good.A. The price of Frosty PawsB. No harm to humanC. The creation of a new kind of ice cream for dogsD. Harm to humanE. Feeding ice-creams to dogsF. Attraction to dogs

A. It is sold in packs of 3 or 4_________.

某单位职工陈某,已按规定交纳住房公积金,现陈某准备购置个人住房。 贷款人自收到贷款申请及符合要求的资料之日起,审核后在( )内向借款人正式答复。

A. 一周
B. 两周
C. 三周
D. 四周

大肠埃希菌RNA聚合酶中的6亚基是

A. 肝素结合位点
B. 利福平作用位点
C. DNA模板结合位点
D. 与四聚体核心形成有关
E. 识别启动子

It took me a whole hour to (solve) the problem.

A. work at
B. work on
C. work out
D. work over

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