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
2024-01-19
61
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 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
文意推断题。A项是对第二段第二句话的曲解,distress(使痛苦)不等于kill。C项和D项是对rice和chicken的曲解。根据第二段第一句话可知,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因为缺乏维生素而引起的。
转载请注明原文地址:https://tihaiku.com/zcyy/3376906.html
相关试题推荐
[originaltext]Risinglevelsofobesityandunhealthyweightscouldbelinke
Criticismandselfcriticismisnecessary______ithelpsustofindandcorrecto
Itisquitenecessaryforaseniormanagertohavegoodmannersand_____knowled
Stressfulenvironmentsleadtounhealthysuchaspooreatinghabits,which_____
Becausethecompanywasdoingmorebusiness,itwasnecessaryto________thefa
Vitaminsdonotprovideenergy,nordotheyconstructorbuildanypartoftheb
Itisnecessarythatwe________haveagoodcommandofEnglishatcollege.A、mus
Thevitaminsnecessaryforahealthybodyarenormallysuppliedbyagoodmi
Itisnecessarytoputbottlesofpillsoutof______.A、reachB、handC、holdD、pla
Saltisasnecessarytolifeaswater.InmanyareasofAfricapeopleonced
随机试题
Changesinthetechnologyofcommunicationareoccurringsorapidlythatwe
[originaltext]MymotherwasborninasmalltowninnorthernItaly.[16]She
请回答有关路基路面几何尺寸测试方法的问题。(4)路基边坡坡度测试方法有()
某省民政厅为了制定本省医疗改革方案,需要对本省的医疗机构和就医人员情况进行调查。
《招标投标法实施条例》规定,招标人发售资格预审文件、招标文件收取的费用应当包括(
脐中至横骨上廉(耻骨联合上缘)的骨度分寸是( )。A.13寸 B.12寸
凡妊娠12周内,胚胎自然殒堕者,称为A.滑胎 B.堕胎 C.小产 D.胎动
药敏试验时无须加入补充物质的细菌是A、流感嗜血杆菌B、淋病奈瑟菌C、脑膜炎奈
黄女士于2010年4月30日在某股份制银行申购了甲基金公司的某款基金,下列关于该
某小型排涝枢纽工程,由排涝泵站、自排涵闸和支沟口主河道堤防等建筑物组成。泵站和自
最新回复
(
0
)