卫生类AB级：复习资料完形填空精选Diet
Diet 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 Kev，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 1 0 countries and their risk of cancer，will provide some __12__.
Early results of the study have revealed that Norway，Sweden and Denmark have the 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 __ 1 5 __colorectal，breast and prostate.
词汇：
obesity n.肥胖
bowel n.肠
dietary adi.饮食的
prostate/ adi.前列腺的
obese adj.肥胖的
womb n.子宫
Colorectal adj.结肠直肠的
1. A. course B. cause C. court D. reason
2. A. on B. up C. in D. down
3. A. cancer B. health C. disease D. man
4. A. dance B. turn C. take D. play
5. A. while B. if C. unless D. since
6. A. percent B. countries C. people D. number
7. A. at B. in C. of D. for
8. A. risk B. degree C. presence D. place
9. A. reduced B. increased C. mysterious D. seen