首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
The vitamins necessary for a healthy body are normally supplied by a good mixed diet (饮食),including a variety of fruits and gree
The vitamins necessary for a healthy body are normally supplied by a good mixed diet (饮食),including a variety of fruits and gree
admin
2012-09-11
46
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 "beri-beri". 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 "beriberi"—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.
The disease "beri-beri"______.
选项
A、kills large numbers of Eastern peoples
B、is a vitamin deficiency (缺乏) disease
C、is caused by diseased rice
D、can be caught from diseased chickens
答案
B
解析
本题考查考生根据文章内容的推理判断的能力。A项是对第二段第二句话的曲解,distress(使忧伤)不等于kill。C项和D项是对rice和chicken的曲解。而根据第二段第一句可知这种病与restricted diet有关,而第一段说若只以restricted diet为食,需要额外补充维生素,因此可以推断出脚气病是一种维生素缺乏症。
转载请注明原文地址:https://kaotiyun.com/show/VsDO777K
0
成人本科学位英语
相关试题推荐
Smoking,whichmaybeapleasureforsomepeople,isaserioussourceofdiscomfortfortheirfellows.Further,medicalauthorit
Mostchildrenwithhealthyappetitesarereadytoeatalmostanythingthatisofferedtothemandachildrarelydislikesfood__
Thefirmshouldmakeasubstantialprofit______satisfactorylaborrelationsaremaintained.
Themostimportant______ofhisspeechwasthatweshouldallworkwholeheartedlyforthepeople.
AuniquelaboratoryattheUniversityofChicagoisbusyonlyatnight.Itisadream【C1】______whereresearchersareatworkstu
Youshouldn’tchangejobsconstantly,orpeoplewillbecomesuspiciousofyourabilityto______anyjob.
HavingpassedTOEFL,hewas______fromtakingEnglishcourses.
Though______inNewYork,Davehadalwayspreferredtoliveinasmalltown.
Collegehasmanysocialattractions,someofwhichcanbedistractions.Sports,concerts,parties,anddormitorybull(废话)session
Collegehasmanysocialattractions,someofwhichcanbedistractions.Sports,concerts,parties,anddormitorybull(废话)session
随机试题
道路右侧白色实线标示机动车道与人行道的分界线。
正确贮存的情况下,硫酸庆大霉素注射剂的外观性状为
某孕妇,无业,26岁,经产妇,孕42周,临产25小时仍不能娩出小孩前来就医。检查:阴道口脱出一上肢,恰好与接生者的右手相握,子宫呈葫芦状,子宫下段压痛,胎心不清,胎头在母体右侧,宫口开全,血尿。与本产妇目前疾病诊断无关的是
接触式探测火灾的常用参数有()
粉尘溶解度大小与对人危害程度的关系是()。
受赠人有下列行为,赠与人可以撤销赠与的有()。
下列选项中不属于结构化程序设计方法的是______。
请在【答题】菜单下选择【进入考生文件夹】命令,并按照题目要求完成下面的操作。注意:以下的文件必须都保存在考生文件夹下。在某展会的产品展示区,公司计划在大屏幕投影上向来宾自动播放并展示产品信息,因此需要市场部助理小王完善产品宣传文稿的演示
Whatarethemaindemandsofthedemonstrators?
Peoplewholiveinheavilyindustrializedareasdonotgetasmuchsunlightastheyshould.Dust【C1】______overacityataltitud
最新回复
(
0
)