题目内容
9.Ears are for hearing-everyone knows that.But for a creature called the Cuvier's beaked whale,hearing starts in the throat,a new study found.The observation might help explain how all whales hear.The work might also help scientists understand how animals are affected by underwater sonar (一种探测系统).This sonar,used by some ships,sends out sound waves to locate underwater objects.
The Cuvier's beaked whale is a so-called toothed whale.Toothed whales dive deep into the ocean in search of food.As the whales hunt,they produce sounds that reach objects and then return to the whales.This allows the animals to"see"the shape,size,and location of objects,even when they're 1,000meters under the sea,where it is totally dark.
To better understand how the whale hears,researchers from San Diego State University in California took X-rays of two Cuvier's beaked whales.The whales had died and washed up on the beach.
Ted Cranford and his colleagues used the images to make a computer model of a Cuvier's beaked whale's head.Then,they modeled the process of sound traveling through the head.
The researchers knew that some sounds get to the ears of a toothed whale through a structure called"the window for sound".Found on the lower jaw,this structure is very thin on the outside and has a large pad (垫) of fat on the inside.
When the researchers used their computer model to work out how sound waves travel in the whale's head,they were surprised to find that sounds coming from right in front of the whale actually travel under the animal's jaw.From there,sound waves move through the throat,into a hole in the back of the jaw,and finally to the pad of fat near the animal's ears.
Cranford guesses that other types of whales may hear through their throats.Further testing is needed to be sure.Eventually,the insight into how whales hear might explain whether sonar testing by military ships is causing the animals to wind up on beaches.
72.Toothed whales look for food under the sea byC.
A.watching the shape and size of their objects
B.diving deep into the sea
C.sending and receiving sounds
D.making lots of noises
73.Researchers took X-rays of two Cuvier's beaked whales in order toD.
A.find out why they had died and washed up on the beach
B.make a computer model of a Cuvier's beaked whale's head
C.make sure that sound travels through the head
D.know more about the way the whale hears
74.Which of the following describes the way taken by sound waves through a Cuvier's beaked whale?B
A.A hole in the back of the jaw→the ears→the jaw→the throat.
B.The jaw→the throat→a hole in the back of the jaw→the ears.
C.The throat→the jaw→the ears→a hole in the back of the jaw.
D.The ears→the throat→a hole in the back of the jaw→the jaw.
75.What can be inferred from the last sentence of the passage?D
A.Ears are useless to the Cuvier's beaked whale.
B.Military ships send out sounds like a Cuvier's beaked whale.
C.The whale's unusual acts have nothing to do with human activities.
D.Further research might show human activities can influence whale's activities.
分析 本文主要讲了一项最新的研究发现一种叫做居维叶突吻鲸的动物使用喉咙听声音.
解答 72.C 73.D 74.B 75.D
72题答案:C考查细节推理,根据原文第三段的As the whales hunt,they produce sounds that reach objects and then return to the whales.可知本题答案为C选项.
73题答案:D考查细节推理,根据原文第三段的To better understand how the whale hears,researchers from San Diego State University in California took X-rays of two Cuvier's beaked whales.可知本题答案为D选项.
74题答案:B考查细节推理,根据原文第六段的they were surprised to find that sounds coming from right in front of the whale actually travel under the animal's jaw.From there,sound waves move through the throat,into a hole in the back of the jaw,and finally to the pad of fat near the animal's ears.可知声波接受的方式为:the jaw-the throat-a hole in the back of the jaw-the ears.故本题答案为B选项.
75题答案:D考查细节推理,根据文章最后一句Cranford guesses that other types of whales may hear through their throats.Further testing is needed to be sure.Eventually,the insight into how whales hear might explain whether sonar testing by military ships is causing the animals to wind up on beaches.可以推测出"未来的研究有可能会表明人类的活动会影响鲸鱼的活动",故本题答案为D选项.
点评 本文是一篇科教类阅读,题目涉及多道细节理解题,做题时结合原文和题目有针对 性找出相关语句进行仔细分析,结合选项选出正确答案.推理判断也是要在抓住关键句子的基础上合理的分析才能得出正确的答案.
D.It seemed fine.I figured the mother must have been killed,leaving it an orphan(孤儿).Now,the baby was pretty hungry for(42)A and then left its nest to search the neighborhood for help.
I was about to carry it into my(42)C when I found several other babies( 43)D to run down the tree from where their nest was.With the first squirrel hid into my(44)C,I stood at the base of the tree and was(45)C when three more babies ran right down into my hands.Those dear little creatures were so happy to feel safe and(46)C,and they all held each other close in my shirt.I took them home and(47)C them bread and milk to eat.The poor starving things went(48)B as they swallowed the meal.
I phoned a lady in the next town who(49)A a small squirrel shelter.She had a big back yard with large(50)D surrounded by a tall wooden fence.She assured me she was well(51)B to care for the babies and provide a natural home for them when they were grown.
I love that those little girls cared enough about the squirrels to seek out the(52)D of the Animal Lady!And I really(53)Cgetting to help the baby creatures.And then the(54)Aof caring continued(55)A the lady with the squirrel shelter took them in.How wonderful to be part of a chain of kindness.
| 36.A.hunt | B.love | C.cure | D.rescue |
| 37.A.to | B.through | C.for | D.from |
| 38.A.followed | B.glanced | C.comforted | D.persuaded |
| 39.A.came down | B.bent down | C.put down | D.broke down |
| 40.A.fur | B.legs | C.teeth | D.injuries |
| 41.A.milk | B.vegetable | C.nuts | D.leaves |
| 42.A.room | B.car | C.house | D.cage |
| 43.A.pretending | B.waiting | C.swinging | D.starting |
| 44.A.shoe | B.pocket | C.shirt | D.drawer |
| 45.A.puzzled | B.interested | C.astonished | D.satisfied |
| 46.A.nervous | B.cold | C.warm | D.tired |
| 47.A.handed | B.showed | C.gave | D.lent |
| 48.A.hungry | B.wild | C.sad | D.afraid |
| 49.A.owned | B.needed | C.sought | D.shut |
| 50.A.ladders | B.flowers | C.bamboos | D.trees |
| 51.A.organized | B.equipped | C.built | D.known |
| 52.A.shelter | B.information | C.advice | D.help |
| 53.A.minded | B.regretted | C.enjoyed | D.appreciated |
| 54.A.chain | B.feeling | C.sense | D.connection |
| 55.A.when | B.if | C.before | D.until |
At I a.m.I(36)ACairo and took a taxi to Tahrir Square.I was(37)Cand,having been to Cairo before,knew that while most of the city was(38)Bat this hour,a couple of fast-food restaurants would be open there.
The taxi dropped me(39)Dacross the street from Hardee's.A moment later,just as I was about to(40)Dthe restaurant door,two street children ran towards me with full(41)Cfor food.
Being a veteran (老练之人) traveler(42)Bhaving once lived in Egypt for a year,I was no stranger to children (43)Cor people asking me for help.But seldom had I been so(44)D by the sincerity of the request.
I turned back to the(45)Aand asked them to wait while I went inside to buy them food.At the counter I(46)Atwo hamburgers for the boys.
When their food was ready,I walked back(47)Band invited them in to eat with me."No!"they cried(48)C."We do not belong in such a nice place!"
(49)Ato persuade them otherwise,I brought the(50)Bout,and as they took the burgers,they showered me with 30 seconds of nonstop(51)A.praying that Allah would bless me always.
And this is(52)B.five years later,I still ask God's blessings for those two Egyptian boys.I(53)Cas sincerely as they had for me,(54)Dthat while they had nothing material to give,they had given me something (55)A:an awareness of my spiritual poverty and a desire for a softer heart.
| 36.A.reached | B.saw | C.visited | D.noticed |
| 37.A.thirsty | B.angry | C.hungry | D.frightened |
| 38.A.let down | B.closed down | C.got down | D.put down |
| 39.A.away | B.back | C.out | D.off |
| 40.A.shut | B.lock | C.cover | D.open |
| 41.A.smiles | B.hardships | C.cries | D.honors |
| 42.A.apart from | B.as well as | C.in favour of | D.in return for |
| 43.A.beating | B.struggling | C.begging | D.trembling |
| 44.A.surprised | B.regretted | C.appointed | D.moved |
| 45.A.boys | B.drivers | C.waiters | D.workers |
| 46.A.ordered | B.demanded | C.requested | D.deserved |
| 47.A.inside | B.outside | C.forward | D.backward |
| 48.A.happily | B.cheerfully | C.astonishingly | D.sadly |
| 49.A.Unable | B.Impossible | C.Ready | D.Willing |
| 50.A.book | B.food | C.cook | D.look |
| 51.A.blessings | B.belongings | C.campaigns | D.challenges |
| 52.A.how | B.why | C.where | D.when |
| 53.A.tell | B.speak | C.pray | D.bow |
| 54.A.forgetting | B.following | C.regretting | D.remembering |
| 55.A.greater | B.fewer | C.less | D.lower |