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、Cud. B、Reticulum. C、Bacteria. D、Grass. C信息明示题。根据短文中Bacteria in cow’s stomachs aid in digesting the cellulose in stems of grass
A、Cud. B、Reticulum. C、Bacteria. D、Grass. C信息明示题。根据短文中Bacteria in cow’s stomachs aid in digesting the cellulose in stems of grass
admin
2014-11-27
22
问题
Cattle have served humanity since prehistoric days as beasts of burden and as suppliers of leather, meat, and milk. Some of the earliest written records concern the sale of cattle. These valuable animals are unusual in that they do not have front teeth in their upper jaw. Instead they chew with their rear teeth and gums. Cows swallow their food quickly and store it in the paunch or rumen, the first of the four compartments in their stomachs. Later the food passes into the second stomach or reticulum where it is rolled into little balls or cuds. While resting, cows cough up these cuds and chew them more thoroughly. This time the food passes into the third and then into the fourth stomach, where digestion takes place. Bacteria in cow’s stomachs aid in digesting the cellulose in stems of grass or hay.
Over one hundred million head of cattle are raised in the United States. Dairy cattle produce more than fifteen and one-half billion gallons of milk every year. Although dairy cattle are bred primarily to produce milk, about half the beef used in the United States comes from dairy breeds. This is because when dry(no longer producing milk)they fatten quickly and produce high-quality beef.
Questions 16 to 18 are based on the passage you have just heard.
16. According to the passage, what is the rumen?
17. What is the cow’ s second stomach used primarily for?
18. Which of the following is essential in the digestion of cellulose in the cow’ s stomach?
选项
A、Cud.
B、Reticulum.
C、Bacteria.
D、Grass.
答案
C
解析
信息明示题。根据短文中Bacteria in cow’s stomachs aid in digesting the cellulose in stems of grass or hay.可知牛胃里的细菌帮助消化纤维素。故正确答案为C。
转载请注明原文地址:https://kaotiyun.com/show/xlv7777K
0
大学英语四级
相关试题推荐
DoesPersonalityDecideDestiny?1.有人认为性格决定命运2.也有人认为命运是自己把握的3.我的观点
DoesPersonalityDecideDestiny?1.有人认为性格决定命运2.也有人认为命运足自己把握的3.我的观点
Forthispart,youareallowed30minutestowriteashortessayentitledGrammarorCommunication.Youshouldwriteatleast12
A、May,29.B、June,29.C、July,29.D、August,29.B细节推断题。男士提到,学生报名的截止日期一般是在开学前两个月。因此,如果8月29日开学,那么报名的截止日期就是6月29日。
Althoughtheenjoymentofcolorisuniversalandcolortheoryhasallkindsofnamestoit,colorremainsaveryemotionalands
A、English,FrenchandGerman.B、English,GermanandItalian.C、English,FrenchandItalian.D、English,GermanandItalian.C信息明示
A、Sheagreeswiththeman.B、Shedoesn’twanttogoout.C、Shewouldrathergoswimming.D、Shedoesn’tthinkitisafineday.C
It’slikethis:Youpassapersononthesidewalk【B1】______apairofstylishshoesmadeoflightbrownleather,witharounded
It’slikethis:Youpassapersononthesidewalk【B1】______apairofstylishshoesmadeoflightbrownleather,witharounded
A、Thewomandidmostofthetalking.B、Themandidmostofthetalking.C、Thewomanwaswearingablacksweater.D、Themanandt
随机试题
为了提高电话交流的效率,我们应遵循的基本准则是
公文登记的具体范围有哪些方面()
硬膜外血肿的意识障碍典型变化是
在项目环境现状调查方法中,工作量大,需占用较多的人力、物力和时间,有时还可能受季节、仪器设备条件的限制,但直接可以直接获得一手数据和资料的调查方法是()。
利率期货最早是在()推出的。
在某公司财务目标研讨会上,张经理主张“贯彻合作共赢的价值理念,做大食业的财富蛋糕”;李经理认为“既然企业的绩效按年度考核,财务目标就应当集中体现当年利润指标”;王经理提出“应将企业长期稳定的发展放在首位,以便创造更多的价值”。上述观点涉及的财务管理目标有(
冬天大规模袭击我国的寒潮大都来自西伯利亚,西伯利亚成为寒潮生成地的最不可能的原因是()。
沈阳故宫东、中、西路重要建筑依次是()。
(),我国正式使用《国际健美规则》,这标志着我国竞技健美操正式与国际接轨。
Forpeoplesufferingfromdepression,theadviceisusuallythesame:seekhelp.Thissimple-soundingdirective,moreover,is【M1
最新回复
(
0
)