题目

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Special trees that grow faster, fight pollution, produce better wood, and even sense chemical attacks are being planted by scientists in the US．
When 40 per cent of Hawaii"s US$14 million-a-year papaya （木瓜）industry was destroyed by a virus five years ago, work began on creating genetically engineered（转基因的）trees．
Researchers successfully introduced seeds that were designed to resist the virus．Since then, more and more people have been testing genetically engineered trees．Some researchers put special bacteria into trees to help them grow faster and produce better wood．Others are trying to create trees that can clean polluted soil．Meanwhile fruit farmers are looking for trees that are strong enough to resist worms, and paper companies want trees that produce more wood and therefore more paper．
The Pentagon （五角大楼） even gave the researchers US$500,000 this year after they developed a pine tree that changes its colours if it senses a chemical attack．So far, the poplar, eucalyptus （杨树与桉树）, apple and coffee trees are among those being engineered．All this can be done today because we have a better understanding of tree genomes （基因组）．
However, some people fear that the genetically engineered trees will cause dangerous results．They are worried that the new trees will breed with natural species and change the balance of the forest environment．
“It could be destructive,” said Jim Diamond, an environmentalist. “Trees are what is left of our natural environment and home to many endangered species.”
But researchers insist that science could give nature a fighting chance against both natural and man-made dangers．They hope to answer the critics by stopping the new trees from breeding, so their effect on the environment can be controlled．
63．Which kind of tree is not the ones that scientists are planting in the US?
A．Trees that worms can"t hurt．
B．Genetically engineered trees．
C．Trees that can resist wind better．
D．Trees that can protect themselves at a chemical attack．
64．What caused the American scientists to work on special trees?
A．Tree genomes are mapped out so scientists know how to improve trees．
B．Great numbers of trees have been lost due to attacks by viruses．
C．Researchers successfully introduced seeds designed to resist the virus．
D．They think science could give nature a fighting chance against both natural and man-made dangers．
65．Which of the following was probably the first kind of trees being engineered?
A．Papaya． B．Pine． C．Apple． D．Poplar．
66．Why did critics think engineered trees dangerous? Because ________．
A．these trees can destroy the balance of nature
B．everything except trees has been genetically engineered
C．trees are home to many endangered species
D．these trees may affect normal trees

答案

小题1:C
小题2:B
小题3:A
小题4:D

解析

略

核心考点

试题【Special trees that grow faster, fight pollution, produce better wood, and even s】；主要考察你对题材分类等知识点的理解。[详细]

举一反三

四、阅读理解（2分×15=30分）阅读下列短文,从每题所给的A、B、C和D项中，选出最佳选项。
Talk about a real-life hero! Ten-year-old Larry Champagne from St. Louis，Missouri, hit the brake (刹车) on a runaway school bus. He saved himself and 20 other kids on board from disaster.
It all happened in one terrible accident. On the way to school, the bus driver, Ernestine Blackman, suddenly fell ill. Seeing the car was running away, the other kids started to scream, but Larry ran to the front and stopped the bus.
“At first I thought, ‘We’re going to die,’” says Larry, “but after I pressed the brake, I felt safe.”
Larry’s speedy reaction made news all over the country. He appeared on TV shows as a hero. The bus company gave Larry a big gift. His school hung a medal of honor around his neck.
“My grandmother always tells me to do what’s right,” says Larry. He thanked his brother, Jerrick, 9, who “helped me get the bus driver up” during the emergency（紧急情况）. How did he know how to stop the bus? Larry is something of a mechanic（机械师）. He helps his grandfather work on his old truck. “He gets his hands dirty,” says his grandfather. One thing is for certain: Larry knows where to find the brakes.
1. What did Larry do to save the runaway bus?
A. He parked it for the sleeping bus driver.
B. He helped all the kids climb out through the windows.
C. He dialed 911.              D. he pressed the brake.
2. When did Larry finally feel safe?
A. When the kids finally stopped screaming.        B. When the police officers arrived.
C. Once he pressed the brake, and the bus stopped.   D. When the bus driver started driving again.
3. Larry got the following as praise for his hero action Except            .
A. appearing on TV shows                         B. a scholarship from his school
C. a big gift from the bus company                    D. a medal of honor
4. Larry thanked his brother Jerrick for             .
A. helping him get the bus driver up                  B. helping him work on his old truck
C. teaching him how to find the brake         D. teaching him how to stop the bus
5. The underlined sentence“Larry is something of a mechanic” tells us that               .
A. Larry’s job is a mechanic                       B. Larry knows something about machines
C. Larry is a robot                                     D. Larry knows nothing about machines

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C

       The words “timetable” and “schedule” make most final year students want to eat their own vomit（呕吐物）. Unfortunately, the harsh reality is that final year students must develop a timetable. If you don’t have a schedule or plan for studying ,you will have no way of allocating your valuable time when the unexpected arises. A well-thought-out timetable can be a lifesaver . It is up to you to learn how to develop a schedule that meets your needs .Change it if necessary ,but most important ,follow it . All timetables should be made with the idea that they can be changed. A good one will keep you from wandering off course.
A good timetable should make every hour count—every class ,social event and other activity you engage in .You must focus on the other “free time” available and how you will use it .Make a weekly schedule and divided each day into one-hour increments .Indicate times for classes ,socializing ,and work time. Also block off a period for sleeping every day. In the precious hours left over ,plan time for study .This gives you a rough road map of the time available. Of course ,you can change your schedule as circumstances need.
The timetable you develop should guide you in how to distribute the available time in the most productive manner .Sticking to your schedule can be tough ,but don’t dribble away valuable time. Avoiding study is the easiest thing in the world .It is up to you to follow the schedule you’ve prepared .A good deal of your success in high school and with any future study depends on this simple truth.
Remember ,there is a learning curve. You learn the most in the first 30 minutes of study; after that ,it progressively deteriorates（减弱）. After four or five hours of studying the same material in the same way, you are learning virtually nothing. The solution is to keep switching subjects and study styles.
64．What is the best title of the passage?
A．Advantages of starting a timetable         B．Keep to it ,and you will succeed
C．Make a schedule ,and follow it             D．Learn to love your timetable
65．What does Paragraph 2 talk about?
A．Tips for making a schedule.                  B．Significance of a scientific timetable.
C．Requirements for making a timetable.    D．Importance of following one’s schedule.
66．The following are characteristics of a good timetable EXCEPT that    .
A．it can be changed                                 B．it is flexible
C．it is of many periods                            D．it can save our time
67．From this passage ,we can learn if we wish to achieve high learning efficiency, we’d better    .
A．shift subjects and use different methods regularly
B．devote to the same material continuously
C．turn to teachers for help if necessary
D．have a break every thirty minutes

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（二）
A
How Do Animals Catch Their ZZZ’s?
Different creatures have developed some pretty creative ways to get their rest and stay safe. The lizard（蜥蝎）likes to sleep at the far end of small branches hanging out over a pond or lake in the rain forest. If a snake tries to slither up the branch to eat it ,it will shake the branch and knock the lizard off ,and the lizard will fall safely into the water. Chameleons can change color to match their surroundings in order to hide even while sleeping.
Corillas（大猩猩）like to sleep high in the trees. They build a new bed every night, sometimes taking up to half an hour to pile branches ,twigs ,and leaves into a comfortable bed .Birds also find it safe to sleep in the trees, but unless they have eggs or young chicks ,they don’t use a nest .They just lock their feet around a branch and hang on .A special tendon（腱）in their legs in automatically tight when they are at rest ,so they won’t let go and fall.
Dolphins live underwater ,but must come to the surface to breather .Scientists now believe that dolphins may sleep with only half their brain, while the other half stays awake to keep them safe and breathing. Seals also do this ,lying on their sides on the surface of the water with one flipper underwater paddling to keep their noses above the surface. Some ducks may also have this ability, and actually sleep with one eye closed and one eye open.
56．How many animals are mentioned in this passage?
A．6.                       B．7.                       C．8.                       D．9.
57．How does a chameleon protect itself while sleeping?
A．By changing its body colors.                 B．By hinging out over a pond.
C．By sleeping with half their brain.          D．By making beds with branches.
58．Why will not birds fall when they are at rest?
A．They build nests and sleep in them.       B．They fall asleep automatically.
C．They have a loose tendon in their legs.   D．They lock their feet around a branch.
59．What does the writer intend to tell us?
A．The cleverest animal is the gorilla because it can make beds.
B．Differences in habitat could lead to different living habits.
C．The ways animals catch their ZZZ’s are pretty much he same .
D．In order to protect themselves most animals choose not to sleep.

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D
We all know what it is like to be unable to turn your head because of a cold in the muscles of your neck, or because an unexpected twist has made your neck ache and stiff. Your whole body feels tight. The slightest move makes you jump with pain. Nothing could be worse than a pain in the neck.
That is why we use phrase to describe some people who give you the same feeling. We have all met such people.
One is the man who always seems to be clapping his hands—often at the wrong time—during a performance in the theater. He keeps you from hearing the actors.
Even worse are those who can never arrive before the curtain goes up and play begins. They come hurrying down to your row of seats. You are comfortably settled down, with your hat and heavy coat in your lap. You must stand up to ;et them pass. You are proud of your self—control after they have settled into their seats…Well, what now…Good God, one of them is up again. He forgot to go to the men’s room, and once more you have to stand up, hanging on to your hat and coat to let him pass. Now, that is “a pain in the neck.”
Another, well—known to us all, is the person sitting behind you in the movies. His mouth is full of popcorn; he is chewing loudly, or talking between bites to friends next to him. None of them remain still. Up and down, back and forth, they go—for another bag of popcorn, or something to drink.
Then, there is the main sitting next to you at a lunch counter smoking a smelly cigar. He wants you to enjoy it too, and blows smoke across you food into your mouth.
We must not forget the man who comes into a bus or subway car and sits down next to you, just as close as you will let him. You are reading the newspaper and he leans over and stretches his rock so that he can read the paper with you. He may even turn the paper to the next page before you are ready for it.
We also call such a person a “rubber neck,” always stretching his neck to where it does not belong, like neighbors who watch all your visitors. They enjoy invading your privacy. People have a strong dislike for rubbernecks. They hate being spied upon.
68．Where can you find this passage?
A．Medicine dictionaries.                          B．Social science books,
C．Kids’ comic books.                              D．Science text books.
69．How do you feel when late comers walk back and forth in front of you in a cinema?
A．Ignored.              B．Bored.                C．Disturbed            D．Relaxed.
70．A “rubber neck” often                  .
A．says bad words behind people.
B．quarrels face to face with neighbors.
C．bargains the price with sales women
D．asks about other people’s business
71．Which of the follow is a “pain on the neck”?
A．Someone who helps you find your seat in a movie theatre.
B．Someone who smokes in a smoking section on a train.
C．Someone who throws trash out of his car window on the highway.
D．Someone who goes to the doctor for his severe pain on the neck.

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B

People tend to become more personal and hide less of themselves when using email. Researchers from Open University in Britain have found in a recent study that there are good reasons for this.
The team of researchers asked 83 pairs of students, all strangers to each other, to solve a problem. They had to discuss this question: If only five people in the world could be saved from a world disaster, who should they be? The pairs of students had to talk over the problem either face to face or by computers. Dr. Johnson said, “They told their partners four times as much about themselves when they talked over the Internet as when they talked face to face. When the computers were fitted with cameras so that students could see each other, this limited the personal side of the conversation.”
Generally the information was not extremely personal. It was mainly about things such as where they went to school, or where they used to live. But some students discussed their love stories, and personal childhood experiences.
Dr Johnson believes that emailing encourages people to focus on themselves. And when they do this, they become more open, especially if there are no cameras. “If you cannot see the other person, it becomes easier to talk about yourself. This is because you are not thinking what the other person is thinking of you. So emailing has become the modern way of talking,” said Dr. Johnson. However, this style of talking is not entirely new. “In the 19th century people started to use the ‘telegraph’ to communicate. Now the same kind of thing has happened and people ended up speaking more freely.”
Dr. Johnson thinks that emailers need to know about these effects of emailing, especially when they start work in a company. “ If you don’t know about it, you could find yourself saying more about yourself than you wanted to.”
60. The subject discussed in this passage is _______.
A. how people open up when emailing               B. how people do research studies
C. how to communicate at work                         D. how to discuss and solve a problem
61. The reason that some couples talked freely about themselves is that _______.
A. they didn’t talk about very personal things     　　B. they couldn’t see each other
C. the cameras on the computers were turned on 　　D. they had to discuss a question
62. What does the underlined sentence refer to?
A. The telegraph.          B. The computer.          C. Emailing.          D. Face-to-face talk.
63. In the writer’s opinion, one should ______.
A. focus on oneself when emailing                            B. talk more freely in emails than usual
C. discuss any subject that one wants to                     D. consider how one uses email at work

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