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
17
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] A good mixed diet______.
选项
A、normally contains enough vitamins
B、still needs special provision of vitamins
C、is suitable for losing weight
D、is composed of fruits and vegetables
答案
A
解析
细节推断题。根据题干关键词“a good mixed diet”定位到第一段第一句话,可知混合性的食物一般来说能够提供足够的维生素。因此选择A。B项错误,应该是restrict—ed diet需要特别补充。C项未提到。D项由蔬果组成,显然也不对,因为后文还提到了rice。
转载请注明原文地址:https://tihaiku.com/zcyy/3376905.html
相关试题推荐
[originaltext]Risinglevelsofobesityandunhealthyweightscouldbelinke
Itisquitenecessaryforaseniormanagertohavegoodmannersand_____knowled
Becausethecompanywasdoingmorebusiness,itwasnecessaryto________thefa
Itisnecessarythatwe________haveagoodcommandofEnglishatcollege.A、mus
Thevitaminsnecessaryforahealthybodyarenormallysuppliedbyagoodmi
Thevitaminsnecessaryforahealthybodyarenormallysuppliedbyagoodmi
Thevitaminsnecessaryforahealthybodyarenormallysuppliedbyagoodmi
Itisnecessaryforstudentstotaketestsatmonthly______.A、intervalsB、times
Saltisasnecessarytolifeaswater.InmanyareasofAfricapeopleonced
Saltisasnecessarytolifeaswater.InmanyareasofAfricapeopleonced
随机试题
[originaltext]M:IamsorelievedIjustfinishedthestoryIwasworkingonfo
YourLaptopCareGuideYourlaptop(笔记本电脑)isnot
患者女性,57岁,自觉心慌、呼吸困难,X线检查心影呈"梨状",超声表现左房扩大,
华法林不会在乳汁中出现的机制是()A:解离度大 B:呈弱碱性 C:呈弱酸性
关于保险合同的主体,下列叙述不正确的是()。A.保险人,又称承保人,是指
证券公司、证券投资咨询机构应当严格执行发布证券研究报告与其他证券业务之间的(
在手术协议中要求病人本人或其家属签字,这是尊重病人的()权利。A.知情同
成人脊柱结核区别于脊柱肿瘤X线特点有( )。A.椎体骨质破坏 B.椎间隙狭窄
从2005年7月开始,敦煌研究院对莫髙窟采用了预约参观办法。这一措施合理有效地调
公司信贷的还款方式—般分为一次性还款和分次还款,分次还款分分为等额还款和约定还款
最新回复
(
0
)