首页
登录
职称英语
Nowadays it is understood that a diet, which contains nothing harmful may y
Nowadays it is understood that a diet, which contains nothing harmful may y
游客
2023-07-26
8
管理
问题
Nowadays it is understood that a diet, which contains nothing harmful may yet result in serious disease if certain important dements are missing. These elements are called "vitamins". Quite a number of such substances are known and they are given letters to identify them, A, B, C, D, and so on. Different diseases are associated with deficiencies of particular vitamins. The vitamins necessary for a healthy body are normally supplied by a good mixed diet, including a variety of fruit and green vegetables, h is only when people try to live on a very restricted diet, say during extended periods of religious fasting, or when trying to lose weight, that it is necessary to make special provision to supply the missing vitamins.
One example of the dangers of a restricted diet may be seen in the disease known as beriberi(脚气病), which used to afflict large numbers of Eastern peoples who lived mainly on rice. In the early years of this century, a Dutch scientist called Eijkman was trying to discover the cause of beriberi. At first he thought it was transmitted by a germ. He was working in a Japanese hospital, where the patients were fed on rice which had had the outer husk removed from the grain. It was thought this would be easier for weak, sick people to digest. Eijkman thought his germ theory was confirmed when he noticed, the chicken in the hospital yard, which were fed on scraps from the patients’ plates, were also showing signs of the disease. He then tried to isolate the germ fie thought was causing the disease, but his experiments were interrupted by a hospital official, who claimed that the huskless rice, even though left over by the patients, was too good for chickens. It should be recooked and the chickens fed on cheap, coarse rice with file outer covering still on the grain. Eijkman noticed that the chickens began to recover on the new diet. He began to consider the possibility that eating unmilled rice somehow prevented or cured beriberi—even that a lack of some ingredient in the husk might be the cause of the disease.
Indeed this was the case. The element needed to prevent beriberi was shortly afterwards isolated from rice husk and is now known as vitamin B. The milled rice, though more expensive, was in fact perpetuating the disease the hospital was trying to cure. Nowadays, this terrible disease is much less common; thanks to our knowledge of vitamins. [br] Fresh fruit and vegetables______.
选项
A、contain more vitamin C than any other food
B、decrease our resistance to colds
C、contain every kind of vitamin
D、increase our susceptibility to influenza
答案
C
解析
推断题。本题问的是:新鲜蔬菜和水果______。依据文章第1段最后两句“The vitamins necessary for a healthy body are normally supplied by a good mixed diet,including a variety of fruit and green vegetables.It is only when people try to live a very restricted diet,say during extended periods of religious fasting,or when trying to lose weight,that it is necessary to make special provision to supply the missing vitamins”可知,健康身体所需的维生素包含在各种蔬菜和水果当中,除非有特殊情况,人们不需要再额外补充维生素了。因此,我们可以推断出蔬菜和水果里面包含了人体所需的所有维生素,可见选项C 为正确答案。
转载请注明原文地址:https://tihaiku.com/zcyy/2871932.html
相关试题推荐
____________(所有的航班都被取消了),thepassengerscoulddonothingbuttakethetrain.Al
DifferentKindsofMeetingsNowadays,therearetho
DifferentKindsofMeetingsNowadays,therearetho
DifferentKindsofMeetingsNowadays,therearetho
DifferentKindsofMeetingsNowadays,therearetho
DifferentKindsofMeetingsNowadays,therearetho
Hereallydidnothingpractical,forhe____________(不是看电视就是睡觉).eitherwatched
Yourlossesintradethisyeararenothing____________(与我的相比).comparedwithmine
Inourwork,itis____________(司空见惯的)tobeconfrontedwith,failures.nothingu
Acoeducational(男女合校的)schoolOfferschildrennothinglessthanatruevers
随机试题
(frighten)______bytheexplosion,weallrushedoutofthehall.Frightened过去分词
[originaltext]WhenMidoriwastwoyearsold,sheoftenclimbedontothepian
结合实际,论述如何有效促进大学生的学习迁移。
计划编制时,()按分类规定属于施工质量验收文件。A.质量控制资料核查记录 B.
费用支出最高的企业是()。 A.甲企业B.乙企业C.丙企业D.丁企
28岁已婚妇女。停经37周,腹胀、行动不便1周,加重1日。检查见孕妇半卧位,腹部
下列不属于体育课健康分组的是( )A.痰病组 B.基本组 C.准备组 D
流行性腮腺炎主要病变经脉是A.心肝 B.胆 C.脾 D.肺 E.
《注册房地产估价师管理办法》规定,注册房地产估价师有下列情形()之一的,其
用于企业方针目标展开的工具有()。[2010年真题] A.排列图B.
最新回复
(
0
)