首页
登录
职称英语
Nutritional statements that depend on observation or anecdote should be give
Nutritional statements that depend on observation or anecdote should be give
游客
2023-12-24
57
管理
问题
Nutritional statements that depend on observation or anecdote should be given serious consideration, but consideration should also be given to the physical and psychological quirks of the observer. The significance attached to an experimental conclusion depends, in part, on the scientific credentials of the experimentalist; similarly, the significance of selected observations depends, again in part, on the preconceptions of the observer.
Regimes that are proposed by people who do not look as if they enjoyed their food, and who do not themselves have a well-fed air, may not be ideal for normal people. Graham Lusk, who combined expert knowledge with a normal appreciation of good food, describes how he and Chittenden, who advocated a low-protein diet, spent some weeks in Britain eating the rations of the 1914-1918 war and then got more ample rations on board ship. Lusk attributed his sense of well-being to the extra meat he was eating; Chittenden attributed it to the sea air.
When young animals are reared for sale as meat, the desirable amount of protein in their food is a simple matter of economics. Protein is expensive, so the amount given is increased up to the level at which the increased rate of growth is offset by the increased cost of the diet. As already mentioned, the efficiency with which protein is used to build the body diminishes as the percentage of protein in the diet increases. In practice, the best diets seem to contain between 15 and 25 per cent protein. It is not certain that maximum growth rate is desirable in children; some experiments with rats suggest that rapid growth is associated with a shorter ultimate expectation of life.
There are practical and ethical obstacles to human experiments in which the effect of protein can be measured. Children do not grow as fast as the young animals in which there is a commercial interest. Their need for protein is therefore presumably smaller, but there is no evidence that the desirable protein level, after weaning, is less than 15 per cent. An argument against this percentage of protein is that in human milk only 13 per cent of the solid material is protein. That protein is, however, of better quality than any protein likely to be given to infants that are not weaned on cow’s milk.
Furthermore, milk, like other products of evolution, is a compromise. Mothers are not expendable. A species would not long survive if mothers depleted their own proteins so much in the course of feeding the first child that the prospects of later children were seriously jeopardized. Human milk is no doubt a good food, but the assumption that it is necessarily ideal is stretching belief in the beneficence and perfection of Nature too far. [br] When considering nutritional statements, apart from statements that depend on observation, we should also consider______.
选项
A、the strange low-protein diet
B、the unusual character of the observer
C、the unexpected meals provided by the observer
D、the ample rations of the 1914 - 1918 war
答案
B
解析
这是道细节题,解题句子是文章的第一句“Nutritional statements that depend on observation or anecdote should be given serious consideration, but consideration should also be given to the physical and psychological quirks of the observer.”,但是同时要考虑到身体和心理的因素。可得出答案为B,B的意思是观察者的不同寻常的性格。
转载请注明原文地址:http://tihaiku.com/zcyy/3300463.html
相关试题推荐
Whichofthefollowingstatementsistrueaccordingtowhatyouhear?[br][ori
Whichofthefollowingstatementsistrueaccordingtowhatyouhear?[br][ori
Whichofthefollowingstatementsistrueaccordingtowhatyouhear?[br][ori
Whichofthefollowingstatementsistrueaccordingtowhatyouhear?[br][ori
Whichofthefollowingstatementsistrueaccordingtowhatyouhear?[br][ori
Whichofthefollowingstatementsistrueofthenewbuilding?[br][originalte
Whichofthefollowingstatementsisthebesttitleforthepassage?[br][orig
Whichofthefollowingstatementsisthebesttitleforthepassage?[br][orig
Whichofthefollowingstatementsisthebesttitleforthepassage?[br][orig
Whichofthefollowingstatementsisthebesttitleforthepassage?[originalte
随机试题
【B1】[br]【B6】A、anotherB、theotherC、othersA
Participantobservationalsoreflectsanthropology’sdualnatureasbothasc
SmallSchoolsRisingA)Thisyear’slistofthetop1
[originaltext]Thewaterclockwasanancientclock.Itcouldbeusedonclo
股指期货的投资者应当充分理解并遵循( )的原则,承担股指期货交易的履约责任。A
激素的灭活主要在A.肾脏B.心脏C.肝脏D.大脑E.胰腺
一住店客人未付房钱即想离开旅馆去车站。旅馆服务员揪住他不让走,并打报警电话。客人
A.国家批准正式进口的药品 B.《基本医疗保险药品目录》中的西药和中成药 C
甲公司2018年度实现利润总额800万元,利息发生额为150万元,其中符合
共用题干 某汽车客运站2015年1月共售出车票8万张,其中错款车票2张,错班次
最新回复
(
0
)