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
Man has invented ways to keep warm, but how do animals defend themselves? They cannot reason in the sense that man can, but natu
Man has invented ways to keep warm, but how do animals defend themselves? They cannot reason in the sense that man can, but natu
admin
2013-12-08
53
问题
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. One of these instincts is known as hibernation(冬眠).
"Sleeping like a dormouse(睡鼠)" is not only a common saying but 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, 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, sleep during coldest weather but are roused by a warm spell. During hibernation, the temperature of an animal’s body drops drastically. Breathing and heartbeats almost cease.
Another instinctive methods 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 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 soft and warm by padding 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 ermine(貂)and the little field-mice.
According to the passage, what is "migration"?
选项
A、Moving from one place to another with the season.
B、Living in burrows in winter.
C、Traveling in the winter months.
D、Leaving one’s own country for another.
答案
A
解析
本题为推理判断题,提问的是根据文章内容,什么叫做“迁徙”。根据文章第三段可知,它是指动物的季节性迁徙,而不是如选项C)或选项D)所讲的旅行或者出国。所以答案为A)。
转载请注明原文地址:https://kaotiyun.com/show/hgDO777K
0
成人本科学位英语
相关试题推荐
Treesshouldonlybepruned(修剪,整枝)whenthereisagoodandclearreasonfordoingsoand,fortunately,thenumberofsuchrea
Treesshouldonlybepruned(修剪,整枝)whenthereisagoodandclearreasonfordoingsoand,fortunately,thenumberofsuchrea
Theoldideathattalentedchildren"burnthemselvesout"intheearlyyears,and,therefore,aresubjectedtofailureandatwo
Fearanditscompanionpainaretwoofthemostusefulthingsthatmenandanimalspossess,iftheyareproperlyused.Iffire
Ithasbeenrevealedthatsomegovernmentleaders______theirauthorityandpositiontogetillegalprofitsforthemselves.
Forthispart,youareallowedthirtyminutestowriteacompositionofnolessthan120wordsonthetopic"TheReasonsWhyAdu
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsforreducingtheeffectsofextremeheat.Oneadaptat
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsforreducingtheeffectsofextremeheat.Oneadaptat
随机试题
A.易发生肱动脉损伤B.易发生胭动脉损伤C.易发生坐骨神经损伤D.易发生桡神经损伤股骨颈骨折
通常所说的血型是指
某女,少腹隐痛不休,带下增多,大便时结时溏,时有低热,舌苔薄,脉虚弦。妇科检查:双附件增厚、压痛。其证型是:
多于5岁以前发病,腹部有巨大包块是本病的特点,常有发热和高血压,血中肾素活性和红细胞生成素可高于正常( )。多见于老年人,间歇性无痛肉眼血尿是其早期表现,IVP可有阳性发现( )。
分销是指产品从生产领域向消费领域转移时所经过的路线、环节、方式、机构等的总称。按照不同的划分标准,分销渠道有很多种,邮寄属于()渠道的分销方式。
非财产性质的最轻微的一种补救性行政责任形式是()。
( )是防止内地不合格货物运抵口岸的一项有效措施。
马列主义同中国实践相结合有两次历史性飞跃,产生了“毛泽东思想”和“邓小平理论”两大理论成果。()
光照强度对某种C4植物和C3植物光合作用的影响如下图,回答下列问题:在光合作用过程中,C4植物吸收的CO2被固定后首先形成_________化合物。
Whatdoestheword"afish"(Para.1)probablyreferto?Thebesttitleforthetextmaybe______.
最新回复
(
0
)