6.In Antarctica(南極),when spring comes,ice begins to melt,and the sun stays in the sky all night long.
In the brightly world,the large gray head of a Weddell seal (威德爾海豹) appears through a crack (裂縫) in the ice.The seal takes several deep breaths,and then she opens her mouth,turning her head from side to side.With her teeth,she gets rid of bits of ice.Seals are mammalOs(哺乳動(dòng)物),and they need to breathe air,for which Weddell seals use their teeth to make sure their breathing holes stay open.
The seal makes the hole bigger,and when she can fit her large body through it,she jumps out onto the ice-she is getting ready to have a baby.On the ice shelf,the seal gives birth to a baby.The baby is about three feet long and is covered with thick fur that protects it from the cold wind.The baby drinks its mother's milk and grows quickly.With a few weeks,it is more than six feet long.Under the seal's skin is thick layer of fat called blubber,which keeps the seal warm in its frozen world.
When the baby seal is about two weeks old,it begins to dive with its mother.They slide through the breathing hole into the water below the ice,where the baby seal learns to swim,diving deeper and deeper.In order to stay underwater,it must learn to hold its breath and control its heart rate.
Below the ice,the sun shines brightly through the hole.Finding the opening to breathe is easy,but getting back onto the slippery ice can be difficult for a young seal.With practice and its mother's help,the baby seal soon feels at home both on the ice and under it.
The young seal spends more and more time below the ice,where it learns to hunt for food.When the young seal is about two months old,it will have to feed itself independently.When it becomes an adult,it will swim farther out in search of food,but it will always live on or under the ice.
71.Paragraph 2is mainly aboutD.
A.the function of Weddell seals'teeth
B.the living conditions of Weddlel seals
C.how Weddell seals move under the ice
D.how Weddell seals keep their breathing holes open
72.According to Paragraph 3,the baby sealD.
A.grows slowly
B.is still short after a few weeks
C.is born under the ice
D.is covered with thick fur
73.The baby seal begins learning to swim and dive when it is aboutB.
A.two days old B.two weeks old
C.two months old D.two years old
74.For a young Weddell seal,C.
A.its father's help is important
B.getting onto the ice shelf is easy
C.finding the breathing hole is easy
D.learning to hunt for food is unnecessary
75.The text is mainly aboutA.
A.Weddell seals'life
B.a(chǎn)nimals on and under the ice
C.how Weddell seals keep warm
D.what the winter in Antarctica is like.
分析 文章內(nèi)容主要講述了維爾德海豹的生活習(xí)性以及小海豹的細(xì)小的特點(diǎn).
解答 71.D 推理題.根據(jù)文章第二段最后一句With her teeth,she gets rid of bits of ice.Seals are mammals,and they need to breathe air,for which Weddell seals use their teeth to make sure their breathing holes stay open.可知本段講述的海豹如何讓自己呼吸的洞打開著所使用的具體的做法.故D正確.
72.D 細(xì)節(jié)題.根據(jù)文章第3段第3句The pup is about three feet long and is covered with thick fur that protects it from the cold wind.可知小海豹出生的時(shí)候身上有很厚的皮毛,可以幫助它抵御寒冷跟的氣候.故D正確.
73.B 細(xì)節(jié)題.根據(jù)文章第4段第一句When the pup is about two weeks old,it begins to dive with its mother.可知在2周大的時(shí)候,小海豹就跟著媽媽學(xué)習(xí)游泳了.故B正確.
74.C 細(xì)節(jié)題.根據(jù)文章第五段第2句Finding the opening to breathe is easy,but getting back onto the slippery ice can be difficult for a young seal.可知對(duì)于小海豹來說,找到一個(gè)洞呼吸空氣是比較容易的.故C項(xiàng)正確.
75.A 主旨大意題.根據(jù)文章內(nèi)容主要講述了維爾德海豹的生活習(xí)性以及小海豹的細(xì)小的特點(diǎn),結(jié)合選項(xiàng),答案為A.
點(diǎn)評(píng) 本文是人文地理類閱讀理解.做這類題材閱讀理解時(shí)要求考生對(duì)文章通讀一遍,做題時(shí)結(jié)合原文和題目有針對(duì)性的找出相關(guān)語句進(jìn)行仔細(xì)分析,結(jié)合選項(xiàng)選出正確答案.推理判斷題也是要在抓住關(guān)鍵句子的基礎(chǔ)上合理的分析才能得出正確答案,切忌胡亂猜測(cè),一定要做到有理有據(jù).