19.In a little-known part of the counter-terrorism (反恐怖主義) world,one of the most effective detection systems is a 600-pound animal that works for about 20pounds of fish a day.
Since the 1960s,the United States and a handful of other countries have trained dolphins and sea lions to detect sea mines and swimmers,and to recover worn--out torpedoes (魚雷) and testing objects used in naval (海軍的) exercises.
The U.S.Navy kept its Marine Mammal Program a secret until the 1990s,and this spring CNN became one of the first members of the media to witness firsthand how the program works.
The program trains about 75Pacific bottlenose dolphins,with natural biosonar (生物聲納) that tracks better than any manmade device; and 35California sea lions,with very good underwater eyesight.
Not only do these trained marine mammals track and save millions of dollars in U.S.military equipment,they are also helping to save lives.The Navy won't reveal whether the dolphins and sea lions have effectively stopped terrorists attempting to do harm to the U.S.
A key part of the training program is teaching these mammals how to stop potentially unfriendly swimmers.The program is also positioned to defend against swimmer terrorist attacks as well.
In the digital age,it seems that there should be more advanced approaches to guard the Navy's most expensive things.But according to Rothe,the program director,nothing in today's high-technology world can compete with these mammals'biosonar abilities."I hope that one day there is a robot or a UUV (un-manned underwater vehicle) that makes the mammal program out of date,"he said."But right now this is the best thing out there."
25.The U.S.Marine Mammal Program trained marine mammals toA.
A.stop dangerous swimmers
B.catch 20pounds of fish a day
C.destroy sea mines
D.fire torpedoes
26.What can we learn from the last paragraph?A
A.The trained dolphins are the best way of protection available to the U.S.Navy.
B.There will be dolphin-like robots in the future according to Rothe.
C.The mammal program will become useless soon.
D.Rothe has no faith in today's high technology.
27.Which of the following is TRUE according to the text?D
A.Many countries have trained sea animals for counter-terrorism.
B.The Marine Mammal Program was a secret until the 1960s.
C.The trained sea animals have already stopped some terrorists.
D.The U.S.Navy has trained both dolphins and sea lions.

分析 可愛乖巧的海豚和海獅充當(dāng)高效反恐先鋒,成為美國反恐大軍中的佼佼者.它們不僅可為美國海軍減少巨額損失,同時還能幫助救贖生命.

解答 25.A  26.A  27.D
25.A 細(xì)節(jié)理解題.根據(jù)文章第二段及第六段中的teaching these mammals how to stop potentially unfriendly swimmers可以訓(xùn)練這些動物是為了阻止那些危險的游泳者,故A項正確.
26.A 推理判斷題.根據(jù)最后一段…nothing in today's high-technology world can compete with these mammals'biosonar abilities可知,在某種意義上講,海豚是保護(hù)美國海軍最好的方法,故答案為A
27.D 細(xì)節(jié)理解題 根據(jù)第三段The program trains about 75Pacific bottlenose dolphins,with natural biosonar (生物聲納) that tracks better than any manmade device; and 35California sea lions,with very good underwater eyesight.可知,這項項目不光訓(xùn)練海豚,還訓(xùn)練了海獅,可知D項是正確的,故答案為D

點評 閱讀理解題測試考生在閱讀基礎(chǔ)上的邏輯推理能力,要求考生根據(jù)文章所述事件的邏輯關(guān)系,對未說明的趨勢或結(jié)局作出合理的推斷;或根據(jù)作者所闡述的觀點理論,對文章未涉及的現(xiàn)象、事例給以解釋.考生首先要仔細(xì)閱讀短文,完整了解信息,準(zhǔn)確把握作者觀點.

練習(xí)冊系列答案
相關(guān)習(xí)題

科目:高中英語 來源: 題型:閱讀理解

9.All over the world,children in hospital are being treated with a new kind of medicine:laughter.Lucy is 23and works for Theodora Children's Trust.She is one of many clown (小丑) doctors who bring a smile to the faces of sick children.
"I'm a Theodora clown doctor.I call myself Dr Looloo.I spend two days a week in children's hospitals,making funny faces,telling jokes,and doing magic tricks.As I walk into the wards I blow bubbles,shake hands with the kids,and make up nonsense songs for those children well enough to sing.I take special balloons to make‘balloon animals'and tell funny stories about them.
I'm naturally a very cheerful person.I've always been a clown.In fact my father's a clown and I started working with him when I was eight years old.I knew it was just the job for me and I became a clown doctor because I think it is a great way to cheer up sick,frightened children in hospital.
Being a clown in hospital is very tiring both physically and emotionally.We have to learn not to show our feelings,otherwise we'd be useless.Clown doctors are sensitive but this is not a side most people see.To the children we're happy all the time.I'm still learning to allow myself to feel sad occasionally.There are special kids you get really close to.At the moment I'm working with a very sick little girl from Bosnia who speaks no English,so our only common language is laughter.
At weekends I participate in events to raise money for Theodora Children's Trust.It's a charity so we are paid with the money people give.Being a clown doctor makes the worries of everyday life seem small.All in all,I feel honoured to do this job."

32.Lucy works as a clown doctor becauseC.
A.her father is a clown            
B.she has been a clown since she was eight
C.laughter is a great help to sick children  
D.working in hospital brings her extra money
33.What do clown doctors usually do in hospital?B
A.Teach kids how to speak English.
B.Cheer kids up with funny stories.
C.Join in activities to raise money.
D.Develop kids'sense of humour.
34.Lucy thinks that being a clown doctor isA.
A.a(chǎn)n honourable and meaningful practice    
B.a(chǎn)n interesting job to make a living
C.a(chǎn) good way of getting rid of her worries   
D.a(chǎn)n experience of great fun
35.The best of the passage may beC.
A.How to be a clown              
B.Patient and clown
C.Clown doctor                  
D.Raise money for charity.

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

10.Mountain lions live in mountainous areas of the western United States.Lately,however,people have reported seeing them in quiet neighborhoods all across the country!Usually considered shy and seldom seen,these lions are becoming more noticeable.In addition,the lions appear to be moving east.They were even reported in the suburbs of Boston,Philadelphia,and Chicago.
It seems certain that these"kings of the mountains"are moving.Why?Scientists are not sure.Some think that as the mountain lion population increases in the west,younger wild cats are leaving the area.These cats are searching for new homes and new places for food.
"The young males are looking for new homes,"says Lynn Sadler,who is the director of the Mountain Lion Foundation in Sacramento,Calif."People tend to create too many barriers,such as buildings,fences,roads,and noise.As the mountain lions seek new places and food and water sources,these barriers get in their way."
The sightings have made people increasingly watchful.Sometimes the"mountain lions"that people report seeing turn out to be large dogs or even house cats.But at least a few of the meetings have been real.The building of new roads,t he growing of suburbs and the growing popularity of outdoo r activities are all increasing the chances that people in various parts of the country may meet up with a mountain lion.
Because many people are concerned about the reappearance of the American lion,an expert outlined some ways they can avoid attracting the wild cats:Never leave pets or pet food outside; properly care for farm animals; and plan public land use to enable the lions to move safely from one place to another.
"To be fair,"says the expert,"mountain lions are trying to regain their homes.They were here first.Now we need to find ways we can live together."
28.Mountain lions are moving probably becauseC.
A.the suburbs of big cities are peaceful and quiet
B.more roads are being built into the mountains
C.the number of the lions increases in the west
D.young lions are seeking new partners
29 According to the passage,it is clear thatB.
A.the reported sightings of mountain lions have not been proved
B.people walking in the country may come across a lion
C.fences have been built to protect the lions
D.mountain lions prefer populated areas
30.To avoid attracting mountain lions,people are advisedB.
A.to build more roads for the lions to move safely
B.to keep a close watch on their farm animals
C.not to stay outdoors
D.not to raise pets
31.Which is the best title for the passage?A
A.Mountain Lions in Unlikely Places
B.Measures Taken to Avoid Lions
C.Number of Sightings Going Up
D.Mountain Lions Moving West、

查看答案和解析>>

科目:高中英語 來源: 題型:填空題

7.He is not wealthy; on the contrary,he has been in heavydebt(債).

查看答案和解析>>

科目:高中英語 來源: 題型:填空題

14.If you keepyour word,you will do what you promise before.

查看答案和解析>>

科目:高中英語 來源: 題型:短文改錯

4.假定英語課上老師要求同桌之間交換修改作文,請你修改你同桌寫的以下作文.文中共有10處語言錯誤,每句中最多有兩處,每處錯誤涉及一個單詞的增加、刪除或修改.
增加:在缺詞處加一個漏字符號(∧),并在其下面寫出該加的詞.
刪除:把多余的詞用斜線(\)劃掉.
修改:在錯的詞下劃一橫線,并在該詞下面寫出修改后的詞.
注意:1.每處錯誤及其修改均僅限一詞;
    2.只允許修改10處,多者(從第11處起)不計分.
Last evening,I went to a tea house with my best friends Susan.Before the tea was serving,we talked to each other happily.When waiter came to us with the tea,we didn't see him.Unfortunately Susan raises her hand to comb her hair just when the waiter bent to put the plate on the table.Her hand hit to the cup,and the tea was spattered on her trousers.In my surprise,instead of complaining,Susan smiled,"So lucky that it's not on my white shirt,and I can't even clean it."His words were very inspiring.We couldn't foresee that would happen,but looking at it in a positively way could make us always happy.

查看答案和解析>>

科目:高中英語 來源: 題型:短文改錯

11.增加:在缺詞處加一個漏字符號(∧),并在其下面寫出該加的詞.
刪除:把多余的詞用(\)劃掉.
修改:在錯的詞下畫一橫線(          ),并在該詞下面寫出修改后的詞.
注意:1.每處錯誤及其修改均僅限一詞;
2.只允許修改10處,多者(從第11處起)不計分.
Dear Steven,
I'm glad that you are coming to Beijing this summer vacation.You asked many question in your letter,and now let me answer them.
Beijing,the capital of China,is attractive city with a long history.You can found all kinds of delicious food in Beijing,of that the most famous is the roast Beijing duck.I hope we will enjoy it.Besides,there is a great number of tourist attractions worth visiting,such as the Great Wall,the Summer Palace or the Forbidden City.These scenic spots have attracted millions of tourists in this year.I promise you will have a wonderfully time here in Beijing.
I'm looking forward to hear from you as soon as possible.
Yours,
Liu Chao.

查看答案和解析>>

科目:高中英語 來源: 題型:填空題

8.I enjoy (61)climbing(climb)mountains whenever I can find the time to do so.Tom and Mike are my best friends,both of(62)whomalso like sports.Two years ago,the three of us (63)went(go)up to Mt.Lushan.Instead of taking a bus,which is (64)more comfortable(comfortable),we preferred to climb.We started from the foot of the mountain early in the morning,(65)chatting(chat)all the way.After about one and a half (66)hours'(hour)climbing,we saw two mountain paths before us.We could not decide(67)whichto choose.In the end,we took the right path,thinking that might be a short cut.But we were wrong.We could not find our way out,(68)lost(lose)in the mountain.We had to use our hands and feet to make a way.We began to cry for help (69)butnobody answered.It was not until darkness (70)fell(fall)that we found a right path leading up to a paved road.

查看答案和解析>>

科目:高中英語 來源: 題型:書面表達(dá)

9.閱讀下面的征友信.假定你是瀟湘中學(xué)的李華,愿意與寫信人交朋友.請根據(jù)以下要求寫一封回信,介紹個人的基本情況和學(xué)校生活.信的開頭和結(jié)尾已給出.
要求:
1)介紹個人基本情況不少于3條信息,如年齡、性格、愛好等;學(xué)校生活也不少于3條信息,如作息時間、班級大小、學(xué)習(xí)課程等;
2)詞數(shù):100左右;
3)將回信寫在答題卡上.
Dear friend,
Hi!My name is Jack.I am a high school student in the UK.I'm 17,an active and easy-going boy.I like ball games and surfing the Internet very much.School here starts at 9a.m.a(chǎn)nd ends at about 3:30p.m..Our class is small,only 29students or so.We have to move to different classrooms for different classes.Besides the main subjects,we can choose other subjects like Woodwork and German.Right now,I'm busy preparing myself for the A-level exam.
Please write and tell me about yourself and your school life if you are willing to be my pen friend.
Best wishes,
Jack

Dear Jack,
Hi,I am Li Hua from China.I am very glad to be your pen friend.I study in Bian Cheng High School.
                              
Best wishes,
Li Hua.

查看答案和解析>>

同步練習(xí)冊答案