首页
登录
职称英语
[originaltext] A study of monkeys over a 20-year period suggests that eating
[originaltext] A study of monkeys over a 20-year period suggests that eating
游客
2024-04-30
21
管理
问题
A study of monkeys over a 20-year period suggests that eating less may extend life and prevent disease. American researchers said they believe their findings could apply to people as well. Richard and his team did the research. Half of the monkeys were permitted to eat as much as they wanted. The other half ate a controlled diet. They were fed 2/3 of the calories they would otherwise choose to eat. The researchers found that 37% of the monkeys that ate as much as they wanted had died of causes related to aging after 20 years. In comparison, only 13% of the monkeys on restricted diets had died. On average, monkeys live about 27 years in captivity, that is, when they live with humans and not in the wild. Richard says researchers do not know why reducing calories increases the length of life. But they believe there is a helpful change in the way the body processes energy in the monkeys that eat fewer calories. Extended life was not the only observable difference between the two groups. The monkeys that ate less had half the amount of heart disease and cancer. The study was paid for by the US National Institute on Aging. Some critics say more research is needed to prove that calorie restriction extends life in monkeys. Richard says his study is not complete and that his team will continue to observe the remaining monkeys throughout their lives. Scientists first studied the effects of calorie restriction on aging in the 1930s. Since then, similar studies have shown life-extending effects of reduced diets on rodents(啮齿动物)and worms. Scientists are currently studying the effects of restricted diets on people. However, this is more difficult because it is harder to control the diets of people and because they live longer than other animals.
20. What can we learn from the study?
21. What needs to be done according to some critics?
22. Why is it hard to study the effects of restricted diets on people?
选项
A、There is not enough financial support.
B、It is difficult to measure calories in humans.
C、It is harder to control humans’ diets.
D、The rules for monkeys don’t apply to humans.
答案
C
解析
目的原因题。短文末尾提到科学家们正在研究控制饮食对人类的影响,但这一研究更为困难,因为人类的饮食更难控制,而且人类的寿命比动物的寿命更长。C)项所述是原文提到的第一个原因,为正确答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3577438.html
相关试题推荐
[originaltext]Earlyin1920,theAmericanwriterF.ScottFitzgeraldwaspo
[originaltext]Astudyofmonkeysovera20-yearperiodsuggeststhateating
[originaltext]Astudyofmonkeysovera20-yearperiodsuggeststhateating
[originaltext]AneighborhoodbarbershopmightseemtosomeAmericanslikea
[originaltext]M:So,yourfriend’sgettingmarriedonSaturday.Whathaveyoub
[originaltext]M:So,yourfriend’sgettingmarriedonSaturday.Whathaveyoub
[originaltext]M:So,yourfriend’sgettingmarriedonSaturday.Whathaveyoub
[originaltext]M:ThereareadvertisementseverywherehereinHongKong.Thecit
[originaltext]M:Iwantabiggercarformyfamily.ButI’mnotsureifanyof
[originaltext]M:Iwantabiggercarformyfamily.ButI’mnotsureifanyof
随机试题
A-PowerSupplyPreparationsL-Holeforhandstrap
Educationofexceptionalchildrenmeansprovisionofspecialeducationalser
患者,男性,45岁。右上腹撞击伤、肝区剧痛伴寒战、高热4小时。查体:巩膜轻度黄染
甲亢的典型临床表现有()。A.基础代谢率升高,甲状腺肿 B.基础代谢率升高、
发于体表的化脓性疾病即A、疡 B、疮疡 C、肿疡 D、溃疡 E、结核
A.储存铁B.血清铁C.循环铁D.组织铁E.细胞内铁机体缺铁时最先减少的铁是
甲亢出现浸润性突眼的患者夜间应取何种卧位休息?()A.平卧位 B.高枕卧位
2011-77.位于面部颧弓下缘中央与下颌切迹之间凹陷中的穴位的 A.颧髎
合同终止的,不影响合同中独立存在的有关解决争议方法条款的效力。()
最可能是特异性感染的是A.疖病 B.臀部脓肿 C.腰椎旁冷脓肿 D.下肢丹
最新回复
(
0
)