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
Most animals have little connection with animals of a different kind, / unless they hunt them for food. / Sometimes, however, tw
Most animals have little connection with animals of a different kind, / unless they hunt them for food. / Sometimes, however, tw
admin
2010-01-10
62
问题
Most animals have little connection with animals of a different kind, / unless they hunt them for food. / Sometimes, however, two kinds of animals come together in a partnership / which docs good to both of them. I You may have noticed some birds sitting on the backs of sheep. /This is not because they want a ride, / but because they find easy food in the parasites on sheep. / The sheep allow the birds to do so/ because they remove the cause of discomfort. / So although they can manage without each other, they do better together. / Sometimes an animal has a plant partner. / The relationship develops until the two partners cannot manage without each other. / This is so in the corals of the sea. / In their skins they have tiny plants which act as" dustman", / taking some of the waste products from the corals / and giving in return oxygen which the animal needs to breathe. / If the plants are killed, / or are even prevented from light so that they cannot live normally, / the corals will die.
选项
答案
Most animals have little connection with animals of a different kind, / unless they hunt them for food. / Sometimes, however, two kinds of animals come together in a partnership / which docs good to both of them. I You may have noticed some birds sitting on the backs of sheep. /This is not because they want a ride, / but because they find easy food in the parasites on sheep. / The sheep allow the birds to do so/ because they remove the cause of discomfort. / So although they can manage without each other, they do better together. / Sometimes an animal has a plant partner. / The relationship develops until the two partners cannot manage without each other. / This is so in the corals of the sea. / In their skins they have tiny plants which act as" dustman", / taking some of the waste products from the corals / and giving in return oxygen which the animal needs to breathe. / If the plants are killed, / or are even prevented from light so that they cannot live normally, / the corals will die.
解析
转载请注明原文地址:https://kaotiyun.com/show/cc6K777K
0
专业英语四级
相关试题推荐
Payingkidstodochoreshasbeenoneofthemosthotly-debatedparentingtopicsforalongtime.Someholdthatpayingchildren
(1)Sometimesyoucanknowtoomuch.Theaimofscreeninghealthypeopleforcanceristodiscovertumourswhentheyaresmallan
ThefollowingtwoexcerptsareaboutartificialintelligenceorAI,anoldtechnologywithrecentprogress,thankstoDeepLearn
ThePressConferenceI.AdvantagesofthePressConference—theeventitselfhaving【T1】________
Humanityusesalittlelessthanhalfthewateravailableworldwide.Yetoccurrencesofshortagesanddroughtsarecausingf
ScientistssaidThursdaythatanewAIDSvaccine,thefirsteverdeclaredtoprotectasignificantminorityofhumansagainst
PassageTwoWhatkindofideadoesSiliconValleyrepresentsinceBillHewlettandDavidPackardstartedtheirownbusiness?
PassageTwo(1)Britain’seconomywilllosemomentumthisyearamidsqueezedlivingstandardsanduncertaintyoverBrexita
Humanbeingshaveusedtoolsforaverylongtime.Insomepartsoftheworldyoucanstillfindtoolsthatpeopleusedmoretha
随机试题
划线蓝油是由适量的龙胆紫、虫胶漆和酒精配制而成的。( )
新生儿皮下坏疽皮肤出现暗红及有"漂浮感"时,应采取下列哪一项治疗措施
A.胰岛素B.胰高血糖素C.胃泌素D.血管活性肠肽E.生长激素释放抑制素D1细胞产生
郭某应聘到天天饭店做厨师,双方于2008年1月签订了劳动合同。合同中约定试用期为1年,试用期间包食宿,不支付工资,不为郭某缴纳社会保险费用,试用期满进行考试,若考试不合格则不予录用,合格则录用为正式员工,每月工资2000元。天天饭店称由于是餐饮行业,为食品
1987年下半年,()率先开展土地使用权有偿出让和转让的试点,做法是国家出让土地使用权及允许进行土地使用权抵押。
在课程内容选择上,斯宾塞认为科学知识最有价值,其判断依据是他的()。(2012年)
在我国,规定国家领导人任职限任制的是()。
数据管理技术发展阶段中,文件系统阶段与数据库系统阶段的主要区别之一是数据库系统______。
下面对对象概念描述正确的是
Whathappenedinthemorning?
最新回复
(
0
)