首页
登录
职称英语
共用题干 第一篇How Animals Keep WarmMan has in
共用题干 第一篇How Animals Keep WarmMan has in
题库
2022-08-02
13
问题
共用题干第一篇
How Animals Keep Warm
Man has invented ways to keep warm,but how do animals defend themselves?They
cannot reason in the sense that man can,but nature has taken care of the animal kingdom
by providing animals with special instincts(本能).One of these instincts is known as
hibernation(冬眠).
" Sleeping like a dormouse(棒睡鼠)"is not only a common saying but is a reality.
When winter comes,the dormouse and other hibernating animals have reached a well-
nourished state.They eat very well in warmer days laying down fat in the tissues of their
bodies and during hibernation this keeps them alive.Safe in their nests,or burrows(地
洞),they sleep soundly until the warmth of spring arrives.
Bats,tortoises,snakes,frogs,even insects like butterflies,hibernate more or less
completely. Some, like the squirrels(松鼠),sleep during coldest weather but are roused
(弄醒)by a warm spell(暖流).During hibernation, the temperature of an animal's body
drops drastically.Breathing and heart-beats almost cease.
Another instinctive method of avoiding intense cold is to escape by means of migration.
Wild swans,seagulls,swallows and cuckoos are a few of the very many kinds of birds
which fly thousands of miles,twice a year,to avoid cold.Many animals,especially those
of the Arctic regions,have summer and winter quarters.The Arctic deer of North America,
as well as the reindeer(驯鹿)of Europe,move southward towards the forests when winter
approaches.They return to the northern area when the warmth of spring begins to be
sensed.
There are animals which do not attempt to leave at the first sign of winter cold.Their
instinctive means of defense is to dig out a deep burrow,made it soft and warm by padding
(填塞)out with straw,leaves,moss and fur. In it they have a"secret place"containing
food which they hope will last the winter through!Animals which fall into this class include
the Arctic fox,the rabbit and the little field-mouse."Sleeping like a dormouse"most probably meansA:sleeping longer on cold days.B:sleeping badly.C:sleeping with a lower heartbeat rate.D:sleeping with little breathing,
选项
"Sleeping like a dormouse"most probably means
A:sleeping longer on cold days.
B:sleeping badly.
C:sleeping with a lower heartbeat rate.
D:sleeping with little breathing,
答案
A
解析
转载请注明原文地址:https://www.tihaiku.com/zcyy/1493490.html
本试题收录于:
理工C题库理工类分类
理工C
理工类
相关试题推荐
共用题干 CreatingaWorldwithoutSmokingSm
共用题干 CreatingaWorldwithoutSmokingSm
共用题干 CreatingaWorldwithoutSmokingSm
共用题干 Animal's"SixthSense"Atsunamiwa
共用题干 Animal's"SixthSense"Atsunamiwa
共用题干 Animal's"SixthSense"Atsunamiwa
共用题干 Animal's"SixthSense"Atsunamiwa
共用题干 Animal's"SixthSense"Atsunamiwa
共用题干 Animal's"SixthSense"Atsunamiwa
共用题干 Animal's"SixthSense"Atsunamiwa
随机试题
Thatalackofwealthalltoooftentranslatesintopoorhealthmayseempai
SouthAfricaSafariTopFiveNationalParksandGameReserves[A]ASouth
Todaymanypeoplearestarvingtodeath.【C1】______ashortageoffoodandthe
Drunkendriving—sometimescalledAmerica’ssociallyacceptedformofmurder—
国家提倡________的健康公民自愿献血。A.十八周岁以上 B.二十周岁以上
材料: 记得在我上小学时,有一位教学经验丰富的英语教师,她有一个重要的教学秘诀
(2015年真题)社会工作者小马最近听到家长反映,他招募的贫困家庭家教志愿者小陈
健全的社会保障体系,是国家的一项重要的社会制度,是维护社会稳定和国家长治久安的重
下列各项中,不属于全国社会保障基金资金来源的是()。A:中央财政拨入资金B:国
与学习动机中其他内驱力相比,附属内驱力会随着年龄的增长逐步()。
最新回复
(
0
)