【单选题】{{B}}第三篇{{/B}}
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.
"Sleeping like a dormouse" 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, 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 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 theArctic reindeer ofEurope, 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 theArctic fox, the rabbit and the ermine, and the little field-mice.
B．They sleep soundly inside their burrows in winter.
C．They dig out burrows and store them with enough fooD、
D．They stay in their burrows and live on the food stored there.
网考网参考答案：D
网考网解析：
[解析] 利用题干中的特征词“ermines”，作为答案线索，发现答案相关句：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 (填) out with straw(稻草)，leaves，moss(苔)and fur．In it they have a“secret place”containing food which they hope will last the winter through!(揭示答案)Animals which fall into this class include the Arctic fox，the rabbit and the ermine，and the little field-mice．从上面划线句的内容看出，ermines(貂)会挖洞，在洞里储存食物，冬天就呆在温暖的洞里，靠洞里存储的食物过冬。 Dig out，v．“掘出，发现” Fall in to，v．“落入，陷于(某种状态等)，属于(类别)” document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>
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