首页
登录
职称英语
The vitamins necessary for a healthy body are normally supplied by a good mi
The vitamins necessary for a healthy body are normally supplied by a good mi
游客
2025-03-10
27
管理
问题
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. 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 dangers of a restricted diet may be seen in the disease known as " beriberi". 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 confirmed 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 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. [br] The chickens Eijkman noticed in the hospital yard______.
选项
A、couldn’t digest the polished rice
B、proved "beri-beri" is caused by germs
C、were later cooked for the patients’ food
D、were suffering from "beri-beri"
答案
D
解析
细节推断题,可用排除法解题。A项未提到。B项是对文章第三段第一句话的曲解,这句话说,艾克曼开始认为鸡吃了精米后生病是因为细菌的传染,但是后来第四段说,当鸡吃了糙米以后逐渐恢复健康,这使得艾克曼放弃了自己之前的理论,开始觉得这种疾病是由于精米中缺乏某种物质造成的。C项未提及。因此选D。
转载请注明原文地址:https://tihaiku.com/zcyy/3991469.html
相关试题推荐
Saltisasnecessarytolifeaswater.InmanyareasofAfricapeopleonc
Saltisasnecessarytolifeaswater.InmanyareasofAfricapeopleonc
Saltisasnecessarytolifeaswater.InmanyareasofAfricapeopleonc
Becausethecompanywasdoingmorebusiness,itwasnecessaryto________thefa
Itisnecessarythatanefficientworker______hisworkontime.A、accomplishesB、
Itisnecessaryforstudentstotaketestsatmonthly______.A、intervalsB、times
Thevitaminsnecessaryforahealthybodyarenormallysuppliedbyagoodmi
Thevitaminsnecessaryforahealthybodyarenormallysuppliedbyagoodmi
Itisnecessarythatshe______tothehospitalatonce.A、sendB、wassentC、have
Itisnecessarythatwe________haveagoodcommandofEnglishatcollege.A、mus
随机试题
Duringanearthquake,ifyouareinsideabuilding:Staywhereyouareuntilthe
[originaltext]M:Whatareyougoingtodoafteryourreturnfrom.NewYork?W:
SarrElysetookasipfromaplasticcup.Likeapractisedwinetaster,she
【教学过程】 环节一:导入新课 教师在多媒体上出示“中共一大上海会址”和“南湖游船”两幅图片,并说明中共一大上海会址已经成为了中国的红色回忆,南湖游船每天都
53岁妇女,绝经2年,阴道分泌物增多伴腰痛2个月,偶有少量阴道出血。妇科检查:宫
医师开具处方时,除特殊情况外必须注明的是A、患者体重 B、药品的拉丁文o C
朴某系知名美容专家。某医院未经朴某同意,将其作为医院美容专家在医院网站上使用了朴
窝沟封闭术中酸蚀的目的A:使牙面呈酸性 B:沟底清洁牙面 C:强化树脂与釉质
某项目建筑安装工程目标造价2000元/m3,项目四个功能区重要性采用0-1评分法
根据《组合钢模板技术规范》GB/T50214—2013的规定,钢框胶合板模板的组
最新回复
(
0
)