阅读理解。 Sorry to say, our brains naturally start slowing down at the young age
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this couldn"t be helped, but new studies show that people of any age can train their brains to work faster.
"Your brain is a learning machine," says University of California scientist Dr. Michael Merzenich. Given the
right tools, we can train our brains to act like they did when we were younger. All that"s required is the
practice designed just for the purpose: a few exercises for the mind.
Merzenich has developed a computer-based training method to speed up the process (过程) in which the
brain deals with information (positscience.com). Since much of the data we receive comes through speech,
the Brain Fitness Program works with language and hearing to better speed and accuracy (准确性). Over the
course of training, the program starts asking you to distinguish (tell) sounds (between "dog" and "bog", for
example) at an increasingly faster speed. It"s a bit like tennis instructor, says Merzenich, hitting balls at you
faster and faster to keep you challenged. You may start out slow, but before long you"re pretty quick.
The biggest finding in brain research in the last ten years is that the brain at any age is highly plastic. If
you ask your brain to learn, it will learn. And it may even speed up while in the process. To keep your brain
young and plastic you can do one of a million new activities that challenge and excite you:playing table tennis
or bridge, doing crossword puzzles, learning a language...."When it comes to preventing ageing, you really do
"use it or lose it"," says Barbara Sahakian, professor at Cambridge University.
B. will start working slowly after the age of 30
C. can work as well as at a young age through certain exercises
D. can not be improved once they start to slow down
B. Brain research deals with information from the Internet.
C. Dr. Merzenich is a scientist in computer.
D. Many activities can keep our brains young.
B. People should use the brain to stop it from ageing.
C. The training of the brain should start at an early age.
D. It is necessary to take part in as many activities as possible.
答案
举一反三
will be helpful for you to keep your children safe in heavy traffic. Children learn about road safety by watching
others. Make sure that you always set good examples. Your children will follow you and think it"s OK to do
like you. Teach your children to pay attention to traffic lights when you cross the road together with them.
This helps them understand when it"s safe to cross. Make sure that you walk between your children and
traffic, and hold their hands all the time.
When your children are a little older, you can start to tell them the importance of traffic knowledge. Let
them start to understand the reasons why they need to be so careful. Talk with them about road signs and
traffic rules.
Ask your children to play in a safe place. Never let them ride bikes on the road without an adult present
at rush hour.
The most important thing you can do to keep your children from getting hurt is to encourage them to
follow traffic rules. After knowing about traffic rules, they"ll volunteer to obey them. In this way, they"ll be
careful enough to keep themselves away from danger.
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2. Who should set good examples to young children on roads?
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3. When do young children never ride their bikes alone on the road?
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4. How will children be able to stay safe on the road by themselves?
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5. What is the passage mainly about?
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We are often asked to make a speech in life. Most of us are afraid of it and don"t do a good job. Here are
some simple steps to make your speech a successful one. First of all,find out everything about your subject
and at the same time find out as much as you can about your audience. Who are they? What do they know
about your subject? Put yourself in their shoes as you prepare your speech. Then try to arrange your material
so that your speech is clear and easy to follow. Use as many examples as possible. Never forget your audience.
Don"t talk over their heads or talk down to them. When you are giving your speech,speak slowly and clearly
and look at your audience. Pause for a few seconds from time to time to give your audience chance to think
over what you"ve said. Just remember: be prepared,know your subject and your audience,say what you have
to say and be yourself so that your ideas will bring you and your audience together.
B. listeners
C. viewers
D. trainers
B. follow the audience step by step
C. face the audience in a natural way
D. look up and down from time to time
B. How to Remember the Audience
C. How to Prepare the Material for a Speech
D. How to Pick Out the Topic for a Speech
aren"t real stars. They"re satellites, a machine that has been sent into space and goes around the Earth, moon,
etc. And the biggest of all is the International Space Station (ISS).
The ISS is the biggest satellite because scientists want to live on it. They think that the best way to learn
more about space is to live there. The space shuttle Discovery has taken off from the Kennedy Space Center
in Cape Canaveral, Florida several times and carried a few groups of astronauts to the International Space
Station.
When the space station is finished, it will be like a city in space. People will stay and study there with many
of the things they have at home. Laboratories, living rooms and power stations are being built. The ISS is the
most expensive space program ever. Millions and millions of dollars are being spent on it every year.
Scientists hope that the ISS will be a stepping stone for future space exploration. "The ISS will help us
better understand the human body, explore (know more about) space and study the earth. It can help us make
life on the earth better," said Kathryn Clark, an ISS scientist.
Sixteen countries are in the program: The US, Russia, Canada, Japan, Brazil and 11 European countries.
China is not an ISS country, but it has helped with some of the experiments. In 2003, China sent some rice
up to the ISS to find out what space would do to it.
Twenty Chinese students talked directly to an astronaut (spaceman) in the International Space Station (ISS)
on radio in Nanjing, capital of east China"s Jiangsu Province on Sunday, 2007. The 20 students, aged 10 to 19
from Shanghai, Guangzhou and Nanjing, began talking to Clayton C. Anderson, a 48-year-old American
astronaut at 18:50 p.m. at Nanjing No. 3 Middle School when the ISS was passing over Nanjing.
After it"s finished, more than 90 percnt of the world"s population will be able to see the space station. So
keep looking up, and maybe you"ll see it get bigger and brighter.
B. some students from Nanjing have been to the ISS
C. China is one of the members in the ISS group
D. the ISS is still in the space but has stopped working
B. machines that go around the earth, the moon and some stars
C. buildings where electricity is produced to supply a large area
D. some countries which help send the ISS up into space
—Because they _______.
B. could talk with some Chinese school students
C. hoped to travel to Mars and Venus some day
D. wanted to live in space and do better research
enough to pass exams. Others didn"t do quite enough. Fred Baines was one of them. He spent more time
drinking in the Students" Union than working in the library.
Once at the end of the term, we had to take an important test in chemistry. The test had a hundred
questions. In my room the night before the test, Fred was watching TV. Fred usually worried a lot the night
before a test. But on that night he looked perfectly calm. Then he told me of his plan. "It"s very simple. There
are a hundred questions and I have to get fifty correct to pass the test. I"ll take a coin into the examination
room. I haven"t studied a chemistry book for months, so I"ll just toss the coin. That way, I"m sure I"ll get half
the questions right."
The next day, Fred came happily into the exam room. As he sat tossing a coin for half an hour he marked
down his answers. Then he left, half an hour before the rest of us.
The next day, he saw the chemistry professor in the corridor. "Oh, good," he said, "Have you got the result
of the test?" The professor looked at him and smiled, "Ah, it"s you, Baines. Just a minute." Then he reached
into his pocket and took out a coin. He threw it into the air, caught it in his hand and looked at it.
"I"m terribly sorry, Baines," he said, "You failed!"
B. there were too many questions for students to prepare for
C. good exam results needs hard study
D. tossing a coin can not always decide the result
B. didn"t work hard enough for their studies
C. had too much other work for the Students" Union
D. were quite good at passing exams
B. he knew the answers already
C. the other students would be behind him
D. he had his way to finish the exam
B. took the other students an hour to finish
C. had more than one hundred questions
D. needed to be done by tossing a coin
B. he wanted to make friends with him
C. his way for the exam would never work
D. the exam result depended on the coin
helped them make the best choice while buying.
Harry borrowed his father"s magazine when he needed a new computer. "I"ll read it and choose the
best one." He said.
The magazine described these computers.
