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
Animals have different ways of protecting themselves against wintertime weather. Some animals grow heavy coats of fur or feather
Animals have different ways of protecting themselves against wintertime weather. Some animals grow heavy coats of fur or feather
admin
2014-02-10
102
问题
Animals have different ways of protecting themselves against wintertime weather. Some animals grow heavy coats of fur or feathers, while others dig into the ground to find a warm wintertime home. Some animals spend the winter in a deep sleep because by going to sleep they avoid the time of the year when food is scarce and the temperatures are low. Their sleep is known as
hibernation
.
There is much about hibernation that puzzles scientists. For example,they are wondering how hibernation came into being. Some scientists have explored the possibility that animals release a chemical that starts them hibernating.
One thing that scientists are certain about is that animals hibernate only when it is cold. Hibernation is a seasonal practice.
Some animals that fall into a wintertime sleep are not true hibernators because they spend only a part of the cold season asleep. Bears,for example, can easily be awakened from their winter nap. They are not true hibernators.
Sometimes it is difficult to determine whether a particular animal is a true hibernator. For example,some mice hibernate,but others do not. The same is true of bats. Some of them hibernate. Other do not.
Hibernation is a seasonal practice. This means it______.
选项
A、takes place only during a particular season
B、occurs only during the night
C、is a daily practice
D、only happens when a species becomes over-populated
答案
A
解析
“hibernation”既然是一个“seasonalpractice(季节性的做法)”,那它可能跟季节有关,即它可能仅发生在特定的季节。只有A项符合题意。故选A。
转载请注明原文地址:https://www.kaotiyun.com/show/wnYC777K
本试题收录于:
英语题库成考专升本分类
0
英语
成考专升本
相关试题推荐
Wedevelopourimpressionsofothercountriesandtheirpeoplethroughbooks,movies,television,magazines,fellowstudents,an
Youmaygoearlierifyoureallyhaveto,butI’dratheryou______forme.
Eversincehumanshaveliveontheearth,theyhavemadeuseofvariousformsofcommunication.Generally,thisexpressionofth
TelevisioncarriesmorenationaladvertisingthananyothersintheUnitedStates.Thesameistrueinsomesmallercountriessu
IfEuropeansthoughtadroughtwassomethingthathappened.onlyinAfrica,theyknowbetternow.Afterfouryearsofbelow-norm
It’sChristmasagain.Weliveonadirtystreetinashabbyhouseamongpeoplewhoaren’tmuchgood.Youcan’tseehowpitiful
FromMondayuntilFridaymostpeoplearebusy【21】,butintheeveningsandonweekendstheyarefreeandenjoythemselves.Some
_______moreattention,theyoungtreescouldhavegrownmuchbetter.
Nearlyeveryoneenjoyschicken,andthemostfamousnameinchickenisKentuckyFriedChicken.Mr.Sanders,themanwhostarted
Nearlyeveryoneenjoyschicken,andthemostfamousnameinchickenisKentuckyFriedChicken.Mr.Sanders,themanwhostarted
随机试题
神经衰弱最主要的症状是
在MSSQLServer中,建立表stu(no,name,sex,birthday),no为表的主键,表中信息如题5表所示,能够正确执行的插入操作是()
男性,42岁,突然大量呕血,既往无腹痛史,体温37℃,脉搏98次/分,血压100/80mmHg,巩膜黄染,肝未触及,脾季肋下3cm,质硬,未叩出移动性浊音,红细胞2.24×1012/L,Hb72g/L,白细胞9×109/L,血小板80×109/L,可能诊断
甲、乙二人以按份共有的形式共有一间房屋,后甲、乙二人将该房屋出租给丙,约定的租期是3年。在丙的租期到期前,甲以共有人的名义同丁签订了一份房屋买卖合同。对此,下列哪项表述是正确的?()
德育过程是思想内部矛盾转化的过程。()
(2014年真题)下列选项中,属于春秋时期公布成文法活动的有()。
在下列功能中,哪一个最好地描述了OSI(开放系统互联)模型的数据链路层?()。
在VisualFoxPro中,如果希望跳出SCAN…ENDSCAN循环体外执行ENDSCAN后面的语句,应使用
JourneyinCatastrophes:ThreeFormsofViolentStormsI.WindsandstormsA.Winds’movinginviolentstorms—bringingabout
A、Theyhaveover150students.B、There’snochancetomakefriends.C、Theyareheldeverytwoweeks.D、Theyareinstructedbyso
最新回复
(
0
)