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
专升本
We know that many animals do not stay in one place. Birds, fish and other animals move from one place to another at a certain ti
We know that many animals do not stay in one place. Birds, fish and other animals move from one place to another at a certain ti
admin
2010-12-30
32
问题
We know that many animals do not stay in one place. Birds, fish and other animals move from one place to another at a certain time. They move for different reasons; most of them move to find food more easily, but others move to get away from place that are too crowded.
When cold weather comes, many birds move to warmer places to find food. Some fishes give birth in warm water and move to cold water to feed. The most famous migration(迁移) is probably the migration of the fish, which is called " salmon". This fish is born in fresh water but it travels many miles to salt water. There it spends its life. When it is cold, it returns to its birthplace in fresh water. Then it gives birth and dies there. In northern Europe, there is a kind of mouse. They leave their mountain homes when they become too crowded. They move down to the low land. Sometimes they move to the seaside and many of them are killed when they fall into the sea.
Recently, scientists have studied the migration of a kind of lobster (龙虾) . Every year, when the season of the bad weather arrives, the lobsters get into a long line and start to walk across the floor of the ocean. Nobody knows why they do this, and nobody knows where they go.
So, sometimes we know why humans and animals move from one place to another, but at other times we don’t. Maybe living things just like to travel.
Salmon is known as a creature spending most of its life in______.
选项
A、warm water
B、fresh water
C、cold water
D、salt water
答案
D
解析
转载请注明原文地址:https://kaotiyun.com/show/4lLC777K
本试题收录于:
英语题库普高专升本分类
0
英语
普高专升本
相关试题推荐
求曲线的凹凸区间与拐点.
Manypeoplekeeptheir______(save)inbanks.
About70millionAmericansaretryingtoloseweight.Thatisalmost1outofevery3peopleintheUnitedStates.Somepeopleg
Allgames______becauseoftherainstorm,manystudentscoulddonothingbutstudyintheclassroom.
Therearetwokindsofmemory:short-termandlong-term.Informationinlongtermmemorycanberememberedatalatertimewheni
InWashingtonD.C.,1600PennsylvaniaAvenueisaveryspecialaddress.ItistheaddressoftheWhiteHouse,thehomeofthe
Foryears,childrenintheindustrialareasofEuropeandAmericaseldomlefttheirsmokycitiestoseethebeautiesofthecoun
Astrongvocabularycanbeavaluableasset,bothincollegeandlaterinyoucareer.Considerableresearchevidencesuggeststh
Onceitwasconsideredgoodtokeepthecarengineidlingaminuteortwofollowingcoldstarts.Today,withmoderntechnology,
Oneofthemostimportantproblemsishowto______students’interestsinlearningEnglish.
随机试题
用于评估不同属性对消费者的相对重要性,以及不同属性水平给消费者带来的效用的统计分析方法是()
左心功能不全时发生呼吸困难的主机制是
A.描述性研究B.队列研究C.病例对照研究D.实验性研究E.理论性研究主要根据暴露状况来抽取样本的研究方法是
下列无芽孢的细菌中,抵抗力最强的是()
小刘是一名初中美术老师,在设计课后作业时,总是认为越有难度的作业,越能提高学生的水平。因此,每次布置作业时,他总是布置中等难度以上的任务,这使得一些差生完成起来总是很吃力,学习积极性也日渐下降。问题:请针对上述情况进行分析。
A、 B、 C、 D、 A图形的数量转换。将1个向上的三角形看作4个向下的三角形,则每个图中向下的三角形的个数依次是10、9、8、7,选项巾A是6个向下的三角形。[考点点拨]本题考查的是图形的数量转换,这一图
下面是关于GNP、GDP和NDP的讨论。在2011年,美国的GDP是56775亿美元;NDP是50514亿美元。解释这个差额。作为GDP的一部分的2011年的差额具有什么特征?
要使ξ1=都是线性方程组Ax=0的解,只要系数矩阵A为
Readthearticlebelowaboutsellingsandwiches.Choosethecorrectwordtofilleachgap,fromA,BorC.
Earthquakesoftenhappennearvolcanoes,butthisisnotalwaystrue.Thecentersofsomeare【L1】______.Thebottomoftheseas
最新回复
(
0
)