问题 阅读理解

阅读理解

     British scientists may have discovered the reason why red wine appears to protect the heart. They

say natural chemicals found in red wine appear to protect against blocked blood vessels(血管). The

chemical substances are called poly-phenols(多酚). They come from the outer covering of grapes. They

are not present in other alcoholic drinks.

     Researchers say their discovery explains why many people in southern Europe can eat fatty foods and

still have a low risk of heart disease. People in France, for example, have lower rates of heart disease

than Americans do. Yet the traditional French diet includes butter, cheese and other foods high in

cholesterol(胆固醇). This led the British scientists to examine another important part of the French

diet - red wine. Several earlier studies have suggested that people who drink proper amounts of alcohol

may reduce their risk of heart disease.

     The British team experimented with cells from the blood vessels of cows. The scientists studied the

effects of twenty-three kinds of red wine on the cow cells. They found that poly-phenols from all of the

red wines stopped production of a protein called endothelin(内皮素). This protein causes blood vessels

to become smaller. Scientists believe endothelin is linked to hardening of the blood vessels, which is a

cause of heart disease.

    The scientists found that the decrease in endothelin levels was linked to the amount of poly-phenols in

the wines. The British team performed similar experiments with two other kinds of wine, white and rose.

These wines contain little or no poly-phenols because the grape skins are removed before the wine is

made. White and rose wines had no effect on endothelin levels.

     The scientists also studied the effect of non-alcoholic juice made from red grapes. They found that

grape juice slowed the production of endothelin, but was much less effective than the red wines.

1. So far as grapes are concerned,           is more effective on reducing the risk of heart disease.

A. the outer part of grapes

B. the inner part of grapes

C. the seeds of grapes

D. the juice in grapes

2. What made the British scientists study another important part of the French diet?

A. Traditional French diet.

B. Lower risk of heart disease of the French.

C. The reason why people drink wine.

D. Poly-phenols not existing in other things.

3. From this passage, we may know people's health is linked to           .

A. diet habits  

B. their genes

C. their education

D. living surroundings

4. What's the best title for this passage?

A. A Healthy Diet

B. Protecting Your Heart

C. Red Wine and Health

D. A Study on Health

答案

1-4: ABAC

多项选择题
材料分析题

2011年5月27日至29日,第二次全国对口支援新疆工作会议在北京召开。会议要求,贯彻落实好新形势下新疆工作的指导思想和目标任务,必须始终按照科学发展观的要求推进新疆跨越式发展,必须始终把提高各族人民生活水平作为一切工作的根本出发点和落脚点,必须始终把握各民族共同团结奋斗、共同繁荣发展的主题,必须始终把促进改革发展同维护社会稳定有机结合起来。要着力推进经济建设,加快经济发展步伐,加快推动资源优势向经济优势转化,扶持优势特色产业发展,加强农业综合生产能力建设,推进基础设施建设,优先安排便民基础设施项目。着力推进社会建设,把更多财力投到公共服务领域、落实到重大公益性项目上,大幅提高社会事业发展水平,加快提高公共服务水平,逐步使各族群众过上现代文明生活。着力推进生态文明建设,加快构建生态安全屏障,积极发展循环经济,确保新疆山川秀美绿常在。着力推进体制改革, 加快对内对外开放步伐,努力把新疆打造成我国对外开放的重要门户和基地。着力加强对口支援新疆工作,充分发挥我国社会主义制度优越性。

分析材料中中央关于推动新疆跨越式发展的精神是如何正确坚持矛盾观点的?

________________________________________________________________________________________________________________________________________________________________