首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A、All animals drink in the same way. B、Animals drink in different manners. C、Cats and dogs drink in the same way. D、No result ha
A、All animals drink in the same way. B、Animals drink in different manners. C、Cats and dogs drink in the same way. D、No result ha
admin
2021-07-23
56
问题
Why is it that when dogs drink, water seems to go everywhere? When my dog drinks from her bowl, there is no question that water will end up on the floor. It looks like an unorganized way to get a good drink of water. Researchers at Virginia Tech University have been studying how dogs drink They say dogs know exactly what they are doing. The animals are actually making precise movements at a high speed. This helps them get the fluid they need when they are thirsty. It turns out that neither dogs, nor cats, have a full set of cheeks. This means they cannot suck water like humans or elephants and horses. Dogs lap, or take up the water with their tongues curled backward. As they lap, they move their tongues very quickly to build up momentum. That forces the water into a column and up into their mouths. The Virginia Tech researchers filmed 19 dogs of different sizes and breeds as they drank water. They created different laboratory models to measure tongue motion, and the amounts of water taken in. Using the data from these experiments, the researchers were able to make a model that shows how a dog drinks water. The researchers said that since the mouths of dogs and cats are structured nearly the same way, they thought they would drink water the same way, too. But here is a surprise. The studies showed each family of animals has its own special drinking method "We know cats and dogs are quite different in terms of behavior and character," said Sunghwan "Sunny" Jung, a study author and an associate professor of biomedical engineering and mechanics at Virginia Tech. "But before we did fundamental studies of how these animals drink fluids, our guess was dogs and cats drink about the same way. Instead we found out that dogs drink quite differently than cats," he said.
What is the difference? Dogs must quickly move their tongues down into the water using momentum to bring the water up and into their mouths. Cats don’t bend their tongues to drink like dogs. Cats use less momentum and a more gentle action. They just skim, or barely touch, the surface of the water to drink it. "Cats tend to be viewed as neater, dogs are messier, but dogs really have to accelerate their tongues to make good use of the way the fluid column works," said researcher Sean Gart, a Virginia Tech graduate student. Their findings were published in the Proceedings of the National Academy of Sciences.
20. Why does the water seem to go everywhere when dogs drink?
21. What do we learn about animal’s drinking method?
22. How do cats drink water?
选项
A、All animals drink in the same way.
B、Animals drink in different manners.
C、Cats and dogs drink in the same way.
D、No result has been reached so far.
答案
B
解析
录音提到,研究发现每个科的动物都有其独特的饮水方式,故B项“动物的饮水方式不同”为正确答案。由于猫狗的骨架相似,所以人们普遍认为它们的喝水方式是一样的,但研究结果表明猫狗的饮水方式也不一样,故排除A项和C项。D项“研究尚未有结果”与录音内容不符。
转载请注明原文地址:https://kaotiyun.com/show/1aJ7777K
0
大学英语六级
相关试题推荐
改革开放近40年,中国成为世界上制造业最大的国家,制造业产量超过美国。中国作为“世界工厂”,以物美价廉的优势在世界市场上占有重要地位。但中国是制造大国,却不是制造强国。“MadeinChina”曾是山寨、低品质的代名词,在国际市场上一度遭到抵制(boy
A、Therearedifferentkindsofsoundwaves.B、Differentpeoplehavedifferentabilitiesofsense.C、Therearedifferentkindsof
A、Itdisturbsthelocalpeoplewithnoises.B、Itcausesthedamageonthepavement.C、Itstopspeopleandcarsmovingfreely.D、
国际上将65岁以上人口占总人口的比重达到7%作为国家或地区进入老龄化社会的标准。中国是世界上老龄人口最多的国家。截至2016年年底,我国60岁及以上老年人口数接近2.4亿。中国步人老龄化社会使独生子女一代面临着巨大的工作和生活压力。近年来,健康老龄化的观念
A、Inwords.B、Byeyecontact.C、Byclappinghands.D、Byraisinghand.C该题问面对演讲者的问题,听众如何互动,在录音最后,演讲者让听众通过拍手的方式来表示yes,故C为正确答案。
A、TheOpenUniversity.B、TheYoungFoundation.C、TheBritishgovernment.D、TheSchoolofEverything.B该题问新型学校的想法来自哪里,录音开头说到这个想法源
A、It’stheultimatecauseofwinds.B、Itcausesverticalmovementsofair.C、Itreducesdifferencesinairpressure.D、It’suse
Whilethe1970spoppsychotherapymovementfocusedontheimportanceoflettingangerout,morerecentresearchsuggeststhatth
随机试题
下列关于近曲小管的描述,错误的是
下列不是临床死亡期特征的是
患者,男,46岁,体重60kg。因急性肠梗阻3天入院,发病后未进食,现诉口渴,全身乏力,不能起坐。检查:脉搏100次/分,血压100/60mmHg,眼窝凹陷,皮肤弹性差,24小时尿量1000ml。血红蛋白170g/L,血细胞比容0.53,血清钠134mmo
根据《工程建设项目勘察设计招标投标办法》的规定,招标文件要求投标人提交投标保证金的,保证金数额一般不超过勘察设计费投标报价的(),最多不超过10万元人民币。
用友软件中,下列关于操作员的说法正确的是()。
在Excel数据清单中,按某一字段内容进行归类,并对每一类作出统计的操作是()。
从所给的四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律。
大学生身处国家发展的重要战略机遇期,面临着难得的人生机遇,也面临着艰巨的生活挑战,在人生实践中会遇到各种各样的矛盾和困难,需要端正人生态度。端正人生态度,应当做到()
关于政府采购法的描述,正确的是(6)。
Thisroadaccidentpromptedareviewofschoolsafetypolicyregardingschoolbuses.
最新回复
(
0
)