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
"Migration" in this passage means
"Migration" in this passage means
admin
2010-07-06
39
问题
"Migration" in this passage means
M: Every year, as the seasons change, many birds, fish, insects and land animals start to move. Some travel thousands of kilometers. For many it is for the first time. All of them have one thing in common: they know where they are going and they make no mistakes.
This is migration. There are many things which help animals to migrate. Birds and other animals have a body clock which tells them about changes in temperature and periods of light. Birds and some insects use their eyes to measure and compare the position of the sun from different place.
Many people now believe magnetism is very important. The earth itself is a magnet and every kind of life is affected in some way by its magnetic, fields.
But there are still many questions without answers, for example, the migration of eels. European eels travel down their rivers and into the Atlantic Ocean. They then swim 5600 kilometers to the Sargasso Sea, where they lay their eggs. The eels then die. The baby eels are carried by the Gulf Stream to Europe, a journey which takes two and a half years. They swim back up the rivers. There they live for about ten years before the return journey to the Atlantic. How do they do this? We know what happens to the eels but not how or why.
选项
A、changes in temperature to help them migrate.
B、the position of the sun to help them migrate.
C、periods of light to help them migrate.
D、the distance they have traveled to help them migrate.
答案
B
解析
本题考查细节理解。该题的考点在下面这句话中,“Birds and some insects use their eyes to measure and compare the position of the sun from different place.”所以选项B 为正确答案。
转载请注明原文地址:https://kaotiyun.com/show/jYDd777K
本试题收录于:
公共英语四级笔试题库公共英语(PETS)分类
0
公共英语四级笔试
公共英语(PETS)
相关试题推荐
Whydoesthewomansayshehasmixedfeeling?
Whydoesthewomansayshehasmixedfeeling?
Firstofall,successfullanguagelearnersare______.
Peoplemayspendtimeinmakingdecisionsabout______.People’sdecisionofthemethodofstudyingforatestoriginatesfrom
Whenitcomestofoods,Americaisnotjustthefattestcountryonearthbutprobablythemostschizophrenicaswell--hometoth
Whatarethetraditionalgamesanddancingfor?
Smogissomethingcombinedbysmokeandfog.Londonisalwaysknownforits"blackfogs".Inthewinterof1952,amilkywhitef
Althoughtherehadbeenvarioussmallcamerasdeveloped,itwasnotuntilGeorgeEastmanintroducedtheKodakin1888thatt
Allthewisdomoftheages,allthestoriesthathavedelightedmankindforcenturies,areeasilyandcheaply【21】______toal
Allthewisdomoftheages,allthestoriesthathavedelightedmankindforcenturies,areeasilyandcheaply【21】______toal
随机试题
与六味地黄丸和金匮肾气丸两方主治均不吻合的病证是
氨基酸的主要作用不包括
在盐酸溶液中,与硫氰酸铵试液反应,生成红色产物在盐酸溶液中,与氯化钡溶液反应,形成白色浑浊液
在中医五行学说中临床应用中属于五行相克规律治则的是()。
患者,女性,48岁。因上消化道出血伴休克紧急入院抢救,欠妥的护理措施是()
首先是给老王打分,老王家庭比较困难,苗经理想到自己也曾经困难过,而且老王是部门内两位副经理中工作年限较长的一位,多年来对部门各项工作的安排都积极拥护,尽管不少工作差强人意,但苗经理仍然把他评为:优秀。然后是给小赵打分,虽说小赵的各项工作干得不错,但小赵年初
为了确定T公司2008年度所有发出的原材料是否均经正确的计价,注册会计师需要考虑各种因素对相关样本量的影响并侧重考虑对样本量影响最大的因素。在以下各种因素中,与样本量成同向变动关系且对样本量影响最小的因素是()。
下列关于数据仓库中的数据描述,正确的有()。
判断以下电视剧场景,符合史实的是:
使教会学校世俗化迈出了重要一步的是()
最新回复
(
0
)