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
2025-03-13
2
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 "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. [br] According to Eijkman, polished rice______.
选项
A、was cheaper than unpolished rice
B、was less nourishing (有营养的) than unpolished rice
C、was more nourishing than unpolished rice
D、cured "beri-beri"
答案
B
解析
本题考查考生根据文章内容进行推断的能力。文章中说精米缺乏某种物质,而改吃糙米后能够改善这种状况,说明糙米比精米更有营养。A、D两项与文意相反。
转载请注明原文地址:https://tihaiku.com/zcyy/3995717.html
相关试题推荐
Itisnecessarytoputbottlesofpillsoutof______whentherearesmallchild
【B1】[br]【B11】A、necessaryB、ableC、nogoodD、beatAnecessary,必要的。新鲜空气对良好的睡眠来说是必
TounderstandhowAmericansthinkaboutthings,itisnecessarytounderstan
Theysuppliedthefirstlandanimalswithfoodnecessarytolive,sincetheyare
【B1】[br]【B11】A、helpfulB、heavyC、healthyD、highC根据后一句话“Ifhehadagoodmothe
Afterabusydayofworkandplay,thebodyneedstorest.Sleepisnecessary
Inordertolearnaforeignlanguagewell,itisnecessarytoovercomethefe
Inordertolearnaforeignlanguagewell,itisnecessarytoovercomethefe
Saltisasnecessarytolifeaswater.InmanyareasofAfricapeopleonc
Saltisasnecessarytolifeaswater.InmanyareasofAfricapeopleonc
随机试题
SavingfortheFuture.Purposeofsaving1.Womens
Itiscommonknowledgethatcottoncloth,______inhotwater,tendstoshrink.A
Inagrarian(农业的),pre-industrialEurope,"you’dwanttowakeupearly,start
根据柯尔柏格道德判断发展阶段论的观点,只根据行为后果来判断对错的儿童,其道德判断
任何一棵二叉树的叶结点在前序、中序、后序序列中的相对次序()。A.不发生改变
下述哪项不是血管外溶血A.丙酮酸激酶缺陷症B.先天性球形红细胞增多症C.微血管病
鳞癌可发生于 A.宫颈B.肾盂C.口腔黏膜D.支气管
心肌梗死后心绞痛是不稳定性心绞痛的一种,它是指 A.急性心肌梗死发生后1个月内
关于可行性研究及其报告内容编制深度要求的说法,正确的有()。A.重点研究项
下列法律责任中,属于行政处罚的有( )。2014 A.减低资质等级
最新回复
(
0
)