Passage 2 Questions 6 to 10 are based on the following passage:
The vitamins necessary for a healthy body are normally supplied by a good mixed diet (饮食) , including a variety of fruits and green vegetables. (78) It is only when people try to live on a very restricted diet that it is necessary to make special provision to supply the missing vitamins.
An example of the **ers of a restricted diet may be seen in the disease known as“beri-beri”. (79) It used to distress large numbers of Eastern peoples who lived mainly on rice. In the early years of this century, a scientist named Eijkman was trying to discover the cause of “beri-beri”. At first he thought it was caused by a germ. He was working in a Japanese hospital, where the patients were fed on polished rice which had the outer husk (外壳) removed from the grain. It was thought this would be easier for weak and sick people to digest.
Eijkman thought his germ theory was confmned when he noticed the chickens in the hospital yard, which were fed on leftovers
(剩饭) from the patients' plates, were also showing signs of the disease. He then tried to isolate the germ, but his experiments were interrupted by a hospital official, who declared that the polished rice, even though left over by the patients, was too good for chickens. It should be recooked for the patients, and the chickens should be fed on cheap rice with the outer layer still on the grain.
Eijkman noticed that the chickens began to recover on the new diet. He began to consider the possibility that eating unpolished 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 thiswas the case. The element needed to prevent “beri-beri” was shortly afterwards isolated from Ace husks and is now known as vitamin B. Nowadays, this terrible disease is much less common thanks to our knowledge of vitamins.
第6题: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
第1题
A.火腿汉堡包
B.粥
C.煮鸡蛋
D.炒空心菜
E.萝卜干
第2题
根据下列题干,回答 82~83 题:
某小学,6月1次中午进食火腿汉堡包、粥、煮鸡蛋、炒空心菜、萝卜干,4小时后部分学生表现为头痛、恶心、食欲缺乏,继而出现呕吐、腹泻、腹痛。个别有发热,体温38~40℃。
第 82 题 引起学生食物中毒的可能病原是
第3题
(129~130题共用题干)
某小学,6月一次中午进食火腿汉堡、粥、煮鸡蛋、炒空心菜、萝卜干,4小时后部分学生出现头痛、恶心、食欲缺乏,继而出现呕吐、腹泻、腹痛,个别有发热,体温38~40℃。
129.引起学生食物中毒的可能病原是
A.沙门菌
B.副溶血性弧菌
C.葡萄球菌肠毒素
D.变形杆菌
E.黄曲霉毒素
第4题
引起学生食物中毒的可能食品是()
A.火腿汉堡包
B.粥
C.煮鸡蛋
D.炒空心菜
E.以上都是
第5题
B、副溶血性弧菌
C、葡萄球菌肠毒素
D、变形杆菌
E、黄曲霉毒素
引起考生食物中毒的可能食品是A、火腿汉堡包
B、粥
C、煮鸡蛋
D、炒空心菜
E、萝卜干
第6题
A.沙门菌
B.副溶血性弧菌
C.葡萄球菌肠毒素
D.变形杆菌
E.黄曲霉毒素
第7题
A.沙门菌
B. 副溶血性弧菌
C. 葡萄球菌肠毒素
D. 变形杆菌
E. 黄曲霉毒素
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