北京09年4月学位英语B卷真题(6)

polished rice somehow prevented or cured beri-beri —— even that a lack of some element in the husk might be the cause of the disease. Indeed this was the case. The element needed to prevent beri-beri was shortly afterwards isolated from rice husks and is now known as vitamin B. Nowadays, this terrible disease is much less common thanks to our knowledge of vitamins.

　　6. A good mixed diet 　　　　．　　　　
　　　 A. normally contains enough vitamins
　　　 B. still needs special provision of vitamins
　　　 C. is suitable for losing weight
　　　 D. is composed of fruits and vegetables

　　7. The disease beri-beri　　　　．
　　　 A. kills large numbers of Eastern peoples
　　　 B. is a vitamin deficiency （缺乏） disease
　　　 C. is caused by diseased deer
　　　 D. can be caught from diseased chickens

　　8. The chickens Eijkman noticed in the hospital yard　　　　．
　　　 A. couldn't digest the polished deer
　　　 B. proved beri-beri is caused by germs
　　　 C. were later cooked for the patients' food
　　　 D. were suffering from beri-beri

　　9. Accord