Far from the land of Antarctica(南極洲), a huge shelf of ice meets the ocean. At the underside of the shelf there lives a small fish, the Antarctic cod.
For forty years scientists have been curious about that fish. How does it live where most fish would freeze to death? It must have some secret. The Antarctic is not a comfortable place to work and research has been slow. Now it seems we have an answer.
Research was begun by cutting holes in the ice and catching the fish. Scientists studied the fish’s blood and measured its freezing point.
The fish were taken from seawater that had a temperature of -1.88℃ and many tiny pieces of ice floating in it. The blood of the fish did not begin to freeze until its temperature was lowered to -2.05℃. That small difference is enough for the fish to live at the freezing temperature of the ice-salt mixture.
The scientists’ next research job was clear: Find out what in the fish’s blood kept it from freezing. Their search led to some really strange thing made up of a protein(蛋白質(zhì)) never before seen in the blood of a fish. When it was removed, the blood froze at seawater temperature. When it was put back, the blood again had its antifreeze quality and a lowered freezing point.
Study showed that it is an unusual kind of protein. It has many small sugar molecules(分子) held in special positions within each big protein molecule. Because of its sugar content. It is called a glycoprotein. So it has come to be called the antifreeze fish glycoprotein. Or AFGP.
小題1:What is the text mainly about?
A．The terrible conditions in the Antarctic.
B．A special fish living in freezing waters.
C．The ice shelf around Antarctica.
D．Protection of the Antarctic cod.
小題2:Why can the Antarctic cod live at the freezing temperature?
A．The seawater has a temperature of -1.88℃.
B．It loves to live in the ice-salt mixture.
C．A special protein keeps it from freezing.
D．Its blood has a temperature lower than -2.05℃.
小題3:What does the underlined word “it” in Paragraph 5 refer to?
A．A type of ice-salt mixture.B．A newly found protein.
C．Fish blood.D．Sugar molecule.
小題4:What does “glycol-” in the underlined word “glycoprotein” in the last paragraph mean?
A．sugarB．iceC．bloodD．molecule

小題1:B
小題2:C
小題3:B
小題4:A

在南極洲冰塊與海洋交匯之處，生活著一種叫Antarctic cod的一種魚。是什么原因能讓這種魚生活在如此寒冷的地帶呢？
小題1:主旨大意題。本文主要講述的就是在冰水中生活的一種魚。
小題2:細(xì)節(jié)理解題。倒數(shù)第二段，第一句，可知選 C。
小題3:細(xì)節(jié)理解題。由倒數(shù)第二段，可知。此處是指上文由蛋白質(zhì)組成的東西。
小題4:猜測(cè)詞意題。由最后一段because of its sugar content, … … 由于糖的含量可知
練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語 來源：不詳 題型：閱讀理解

I was standing in the kitchen helping with dinner, asking my mom about my brother's doctor ' s  appointment. They  were  testing  him for  autism(自閉癥 ) .  My  brother, Captain, four  years old at the time, had always been my best friend. We would wrestle, play games and have the best of times together, even though we were far apart in age. My mom told me about the appointment, but ,when she got to the point about the test, she  stopped. I turned around  and  she had tears  in her eyes. I  stared  at her, wishing she would say  something , when  I realized what that  silence meant. My eyes  got blurry (模糊的 )  and  my  breathing  got  very  ragged.  " The  test was positive , sweetheart , "  she said. I broke down, crying.
My mom was trying to cool me down, saying that Captain couldn't see me like this and I had to be a big girl , when the front door opened, and Captain, our three-year-old sister Cali, and  my father came in. I walked out of the kitchen. I couldn't look at him. Everything had just  changed. He was no longer that little baby brother who was just a normal little boy.
We had to move a while later because Captain needed treatment. One day ,I was standing  in the bus line waiting when the " short bus"  came and picked some kids up. The children in  the other line started making jokes about the " retards(智力遲鈍者) "  on that bus and I felt a  strange feeling in my stomach, ,which I had never felt before.
During a band class, my teacher, Mrs. Young, stopped our playing to give us some feed-  back. " Guys ,we ' re playing like the kids on the short bus !  Come on!"  I felt that same feeling I had in the bus line. The entire room was laughing when I raised my hand.  " Yes , Alexis?"  Mrs. Young asked. "I don't think we should make fun of the short bus, because there are a lot of people on  that bus who have great personalities and have the same feelings as we do. And also ,I know  some people on those buses and they are some of the most caring, sweetest, and smartest people , so I would appreciate it if you didn't make fun of them. "
Everyone stared at me. Mrs. Young apologized for the comment and then started the song again.
小題1: What did Alexis think her mother' s silence mean in Paragraph One?
A．There was no chance for Alexis to play games with Captain.
B．Captain was likely to miss the appointment.
C．Captain really suffered from autism.
D．Alexis had to prepare dinner quickly.
小題2: Why did Alexis go out of the kitchen?
A．Because she didn't want to help with dinner.
B．Because she would be much sadder looking at Captain.
C．Because she wanted to play with Captain outside.
D．Because she wasn't willing to meet a sick brother.
小題3:What Alexis said to her teacher can be seen as a kind of         .
A．threatB．a(chǎn)pprovalC．a(chǎn)pologyD．condemnation
小題4: Which of the following would be the best title for the passage?
A．Speaking up.B．Giving up.C．Looking .up.D．Taking up.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

HARTLAND, Wis. (AP) — Lauren Panos was surprised when she walked into her ninth-grade English class in the fall and saw there were no boys.
Her parents had not told her they had enrolled her in a new all-girls class at Arrowhead High School in Hartland. Panos still isn't sold on the idea.
"All the girls there, they can talk out of turn," the 14-year-old said. "We are bored of tasks and it's really upsetting."
More public school systems are looking at separating boys and girls, whether for certain classes or by total schools, after the federal government opened the door last fall. Supporters say separating students by sex helps them learn better and allows boys and girls to explore subjects they may not otherwise take.
"Boys just make a bigger trouble in the class," Panos' classmate, Alyson Douglas, 15, said “I likes not worrying about boys causing disruptions.”
Presently, nationwide, at least 253 public schools offer single-sex classes and 51 schools are entirely single sex, according to the National Association for Single Sex Public Education. In1995, just three public schools offered single-sex classes.
Critics of same-sex classrooms argue that proven methods of improving education should be carried out instead of one that divides boys and girls.
"Too many schools feel they can carry out a social experiment with students' education with really the weakest of theories," said Emily Martin, deputy director of the American Civil Liberties Union's Women's Rights Project.
Single-sex schools are an "illusionary(錯(cuò)覺的) silver bullet," said Lisa Maatz, director of public policy and government relations for the American Association of University Women. They distract(分散) from real problems and do not offer proven solutions such as lower class sizes and enough funding, she said.
"I would suggest that for many of our kids and families, especially in Milwaukee, it's a question of choice," Spence said. "We have a series of choices in Milwaukee and I just think this should be one additional choice."
66．What surprised Lauren Panos was that_______ when she walked into the class.
A．her classmates were all boys.          B．her classmates were all girls.
C．the boys were all absent from class.     D．she went into the wrong class.
67．From what Panos said we can learn that ______.
A．Panos thinks that the idea is very good for they can talk freely.
B．Panos doesn’t accept the fact that girls in her class have to finish many tasks.
C．Panos doesn’t like the idea that boys and girls are in separate classes.
D．Panos prefers to study in a class in which there are only boys.
68．The underlined word “disruptions” in the fifth paragraph most probably means ______.
A．trouble         B．danger   C．interest        D．happiness
69．Critics don’t support the idea of single-sex schooling mainly because_______.
A．boys will cause more trouble and girls will hate studying.
B．single-sex schooling that is not a proven idea can leave out key problems
C．it doesn’t help students develop fully and healthily
D．it can excite students to explore the unknown
70．The passage is probably taken from_________.
A．a(chǎn) newspaper                   B．a(chǎn) magazine   
C．a(chǎn) book of education          D．A TV programme

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

　An explosion on Thursday killed one and injured 21 in a busy street in Tongren, Southwest China’s Guizhou Province.
　　The bomb was hidden in a rubbish bin in the city’s commercial hub（商業(yè)中心），where lots of shops and restaurants are concentrated.
　　The ear-splitting blast was heard around 12∶50 p.m.，said a local newspaper, citing witnesses. The power of the blast shattered（使粉碎）nearby shop windows and ripped the stainless（不生銹的）steel rubbish can to pieces.
　　One passer-by，identified（確認(rèn)）only as Zhang，said she was shocked by the noise and saw a lot of pedestrians lying on the ground when she got to the scene.
　　Thirteen of the injured were taken to a local hospital after the explosion. A doctor there said five were in serious condition but already out of danger after emergency treatment. The others were just slightly hurt.
　　The cause of the explosion is still under investigation, said an officer with the Tongren police, but refused to speculate as to the cause.
　小題1:It can be inferred from the passage that ________.
A．All the injured were taken to a hospital
B．8 of the injured were not taken to a hospital
C．The rubbish bin with a bomb was in a restaurant
D．The rubbish bin with a bomb was in a shop
　小題2:Which of the following statements is true according to the passage?
A．One passer- by, indentified only as Zhang, saw the man throwing a bomb into a bin.
B．Some customers in restaurants were injured.
C．The writer didn’t get to the scene.
D．All customers in shops got hurt.
小題3:In the last paragraph the underlined word“ speculate” probably means ________.
A．tellB．guess
C．discussD．talk
　小題4:What of the follwing can be the best title for the passage?
A．Bomb Hidden in a Rubbish Bin
B．The Cause of the Explosion
C．A Terrible Thing
D．Market Blast Kills 1 ,Injures 21

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

A teddy bear from Cumbria is launching into space to raise cash for charity(慈善).
Terence, an experienced traveller who has been to Iraq, will be the guest of honour on aviation(航行) legend Burt Rutan’s Spaceship One when it flies above Earth. The mission takes off from California on September 29, and on his return the cuddly toy will be auctioned off(拍賣) in aid of the North Air Ambulance Appeal(北部空中救護(hù)服務(wù)中心).
Spaceship One is the world’s first private spacecraft, and is competing for a prestigious space travel prize. Chief executive of the Great North Air Ambulance Service (GNAAS), Graham Pickering, said “flying officer” Terence had been handed over to the RAF six months ago and staff had been receiving postcards from him ever since.
He said, “Terence was a fundraising idea that really took off. We have received pictures of him in a U2 craft, trying parachuting and even looking drunk and disorderly. When the RAF finally discharge him he will be a very rare bear indeed—we just hope he does not burn up on re-entry to Earth.”
GNAAS, which needs charitable donations of more than ￡2m a year, has three air ambulances(空中救護(hù)機(jī)).
Peter Bond, spokesman for the Royal Astronomical Society, said Terence’s safety was not guaranteed. He said, “This is a new and experimental craft and this will only be the second time it has flown. During its first voyage it developed technical problems but hopefully they have now been resolved.”
Since May, Terence has spent time with members of 100 Squadron(空軍中隊(duì)) based at RAF Leeming in Basra, Iraq, and at air shows with performing fighter planes.
Spaceship One will fly 100km (62 miles) above the Earth’s surface, just breaking through the planet’s atmosphere.
If it repeats the feat(技藝) inside two weeks, it will claim the $10m Ansari X-Prize set up to encourage the private space flight business.
小題1:Terence is ________.
A．a(chǎn) real bear living in EnglandB．a(chǎn)n experienced astronaut
C．a(chǎn)n air force officerD．a(chǎn) toy bear
小題2:We can infer that________.
A．a(chǎn)fter this space flight, Spaceship One will get the $10m Ansari X-Prize
B．it is dangerous for a spaceship to re-enter the earth atmosphere
C．Terence will be very safe on the flight
D．Spaceship One is just an ordinary plane
小題3:Which of the following is true of Spaceship One?
A．Spaceship One is the world’s first spacecraft.
B．The purpose of its flight is to collect money for the charity.
C．The purpose of its flight is to compete for a prestigious space travel prize.
D．Spaceship One has never flown.
小題4:Which of the following is the best title?
A．Teddy bear astronaut to lift off B．Spaceship One to lift off
C．Space flightD．The toy bear will be auctioned off

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Scientists are uncovering the secrets of two port cities lost under the waters of the Mediterranean Sea, a researcher said yesterday.
Herakleion and Menouthis were rich and proud cities until something reduced them to rubble (碎石) and buried them in the mud beneath 30 feet of sea water, French underwater explorer Franck Goddio said at the American Geophysical Union conference.
“This is a mystery that is ongoing,” said Goddio, a founder of the European Institute of Marine Archeology, a Paris-based underwater research organization backed by the wealthy Hilti Foundation of Liechtenstein(列支敦士登基金會(huì)).
The destruction of the twin port cities has haunted Goddio ever since he happened upon the site about 15 miles from Alexandria while exploring sunken ships from Napoleon’s fleet.
Goddio and his group of expert divers, marine archeologists(海洋考古學(xué)家) and others, are using high powered vacuums, satellite navigation systems and sophisticated sonar(聲納) to excavate(挖掘) the sunken cities from underneath a carpet of silt about one meter (three feet) high.
Walls of shops, remains of streets and gold artifacts have been found and recovered.
Some experts believe that the port cities were destroyed by a series of massive earthquakes, much like the quakes scientists believe felled Troy(特洛伊城), Jericho and other ancient cities. The uniform direction of the collapsed columns and walls suggest an earthquake, Goddio said, but no fault lines have been found nearby.
Other researchers believe a massive wave, caused by either an offshore earthquake or a distant underwater landslide, could explain the catastrophe. Still others think rising seas and a shift in the Nile River outlet doomed the cities.
“The argument, as you can see, continues,” Goddio said.
小題1:The reason why the two port cities disappeared under the waters of Mediterranean Sea is that ______.
A．the two port cities were destroyed by huge earthquakes
B．the disappearance of the two port cities was caused by underwater landslide
C．rising seas and a shift in the Nile River outlet doomed the cities
D．the story didn’t tell us at all
小題2: From the story we can draw a conclusion that _______.
A．the two port cities were famous for their wealth and the mystery
B．the two cities belonged to France
C．some mysterious creatures from other planets destroyed the two cities
D．the American Geophysical Union conference was once held in one of the two cities
小題3: This article is probably from _______.
A．a(chǎn) scientific magazine
B．a(chǎn) report to the government
C．a(chǎn) school text book
D．a(chǎn) scientific report in a newspaper

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

BRISBANE—Australian Olympic chief John Coates has said Greek athlete Katerina Thanou should not be awarded the Sydney Olympics 100 metres gold medal handed back by Marion Jones.
Jones, who this week admitted to steroid（類固醇）use in the build up to the Sydney Games, has returned the three gold medals and two bronzes she won in 2000.
But Thanou, the silver medalist in Sydney, was herself banned for two years after she failed to appear for a drug test at the 2004 Athens Olympics.
“I’d like to think that Katerina Thanou would not be awarded the gold medal,” Coates told the Australian Associated Press on Tuesday, “but there may be some legal difficulties for the International Olympic Committee (IOC) to overcome in order to reach that conclusion.”
Jamaica’s Tayna Lawrence won the 100m bronze medal in Sydney behind Jones and Thanou.
Coates also said he expected the United States Olympic Committee (USOC) to hand back the medals won by the women's 4x100m and 4x400m relay teams.
Two of Jones’s team mates in the 4x100m team which finished third in Sydney, Torri Edwards and Chryste Gaines, have also served doping（興奮劑）bans.
The U.S. women’s 4x100m relay team won the gold medal ahead of Jamaica and Russia.
“On the relays, it’s my expectation that the United States Olympic Committee will be required to also hand back the medals won by the other ladies who competed with Jones in the two relays,” Coates said.
“That is normal practice.”
The United States Olympic Committee (USCO) has publicly apologized to the organizers and competitors of the 2000 Sydney Games and the Australian public for Jones’s actions.
As part of the USOC’s apology, president Peter Ueberroth promised that the U.S. would send a clean team to next year’s Beijing Olympics.
1. What is the best title of the passage?
A. Jones has returned the Sydney medals
B. Thanou should not receive Sydney gold
C. Steroid use at Sydney Olympics
D. The U.S would send a clean team to Beijing Olympics.
2. Thanou should not get the Sydney gold medal because________.
A. she didn’t pass the drug test.
B. she served doping ban at Sydney Olympics.
C. she didn’t take the drug test at Sydney Olympics.
D. she ran second at Sydney Olympics.
3. Which of the following statements is True?
A. Jones has got five gold medals at Sydney Olympics.
B. The USCO has returned medals in the two relays.
C. Thanou should receive Sydney gold medal.
D. Jones also took part in the women’s 4x100m relay race.
4. Why did Coates expect the USOC to hand back the medals won in the relay races?
A. Because the IOC required them to do so.
B. Because they didn’t take the first place in the relay races.
C. Because some of the runners of the U.S served doping bans.
D. Because they felt sorry for Jones’s actions.
5. What would probably happen next according to the passage?
A. Thanou would receive Sydney gold.
B. Jamaica’s Tayna Lawrence would receive Sydney gold.
C. Thanou wouldn’t be allowed to take part in the Beijing Olympics.
D. Fewer or no American athletes will serve doping drugs in Beijing Olympics.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Shanghai-More Shanghai people are renting cars to travel over the coming National Day holiday, Tom reported today.
Most cars in large local car-rental companies such as Yongda, Anji and Dazhong are leased so far with the Buick Sport Utility Vehichle (SUV) in high demand.
Santana and Jetta were previously the most popular car models rented by Shanghai people for travel, while the high-end Buick models have generated great interest among locals renting cars these years. However, the rent on a Buick GL or GS model is between 650 yuan and 750 yuan a day, nearly double those of the Santana and Jetta cars.
Compared with Santana, Buick looks better, has greater capabilities and is safer and more comfortable, said a car leaser. “I don’t mind paying a higher cost for a Buick to enjoy the holiday,” he said.
SUV cars are very popular in the car renting market, according to some car rental firms.
“All the 31 Buick GL8SUV cars were leased out several days ago,” said an employee with the Shanghai Yongda Car Rental Co.
local people are more inclined (傾向于) to go travel with groups of friends, so SUV cars are a better choice, said an industry analyst (分析家). Moreover, SUV car are safer on rugged and rough roads, the analyst said.
According to the data, most people rented cars for seven days; a less number rented them for two or three days.
1. What’s the best title for the passage ?
How Shanghai People Spend Their Holidays
Why So Many Shanghai People Rented Cars for Holidays
More Shanghai Rent Cars for Holidays
Shanghai Rent SUV Instead of Santana and Jetta
2. According to the passage we can see SUV is ________.
the name of a car-rental company
the name of an expensive car
the name of an ordinary car
the place for the holiday
3. At present for how much money can you rent a Santana or Jetta for a day ?
Between 650 yuan and 750 yuan.
Between 350 yuan and 380 yuan.
About 450 yuan.
Less than 300 yuan.
4. Why do many people choose SUV cars for their holidays ?
Because they are cheaper.
Because they are convenient on rugged and rough roads.
Only because they can run on bugged and tough roads.
Because no Santana and Jetta can be rented now.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Believe it or not, going to school is not a legal(法定的) requirement in the United States. It
is a legal requirement that all kids be educated, though. When parents believe they can give their kids a better education--- or have other reasons for not wanting to send their kids to a local school --- they may choose home schooling.
However, if a kid hates school, home schooling is probably not the escape he is looking for. Home schooled students can learn just as much as they would in regular school if they and their parents work hard to cover all the subjects and experiences necessary. Parents who home school usually have higher levels of education than parents who do not. They already have the skills to educate themselves about teaching their kids.
Parents who home school have to be able to put the time and skill into not just teaching, but also researching lesson plans and resources(資源). So they have to know how to find the information necessary to teach their kids. State schools often provide home-schooling parents with a curriculum(課程), books and materials and places to meet. Some state schools will point parents to other resources for brushing up on forgotten subjects. Or parents may receive continuing education at local colleges or universities.
小題1:According to American law, _______________. 
A．a(chǎn)ll kids shall go to school
B．a(chǎn)ll kids must receive education
C．home schooling parents shall receive continuing education
D．state schools must give support to home-schooling parents
小題2: According to the text, most home-schooling parents________________.   
A．a(chǎn)re short of money B．dislike schools
C．used to work as teachers D．a(chǎn)re well-educated
小題3: Which of the following is NOT true about parents who home school?
A．They should have enough time.
B．They should have some skills in teaching.
C．They must receive special curriculums at the university.
D．They have to be able to know lesson plans and resources.
小題4: The underlined phrase “brushing up on” in the last paragraph can best be replaced by _____.
A．reviewingB．changing
C．choosingD．discussing
小題5: What can be inferred from the text? 
A．Home schooled kids learn fewer.
B．Home schooled kids spend less time studying.
C．Being a home-schooling parent needs a lot of effort.
D．Home schooling will replaced school education.

查看答案和解析>>

同步練習(xí)冊(cè)答案