题目
题型：专项题难度：来源：
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答案
computers which are widely used at home, in communication, finance, science and technology,
medicine and trade.
答案不唯一
核心考点
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举一反三
built 1.______ an analytical machine, which 2.______ instructions from cards with holes.
In 1936 Alan Turing wrote a book 3.______ (describe) how computers could 4.______ (make)
to work,and built a "universal machine" 5.______ (solve) any mathematical problem.
At the beginning, the computer was huge, the 6.______ of a large room. 7.______ years
go by, it becomes smaller and smaller, especially 8.______ it got new transistors in the
1960s, it has become smaller and smaller, and 9.______ artificial intelligence, it is
getting cleverer and cleverer, quicker and quicker.
In 10.______ early 1960s, computers could be connected by a network, 11.______ enables
their users 12.______ information with others and talk to each other. Since computers
13.______ into people"s homes, computers are used by billions of people 14.______
information and communicate with each other around the whole world by the 15.______.
ideas they possess a "sixth sense" for disasters, experts said on Thursday.
Sri Lanka wildlife officials have said the giant waves that killed over 24,000 people
along the Indian Ocean island"s coast seemingly missed wild beasts, with no dead animals
found.
"No elephants are dead, not even a dead hare or rabbit. I think animals can sense
disaster. They have a sixth sense. They know when things are happening," H.D. Ratnayake,
deputy director of Sri Lanka"s Wildlife Department, said on Wednesday.
The waves washed floodwaters up to 3 km (2 miles) inland at Yala National Park in the
southeast, Sri Lanka"s biggest wildlife reserve and home to hundreds of wild elephants.
"There has been a lot of evidence about dogs barking or birds migrating before volcanic
eruptions or earthquakes. But it has not been proven," said Matthew van Lierop, an animal
behaviour specialist at Johannesburg Zoo.
"There have been no specific studies because you can"t really test it in a lab or
field setting," he said.
Other authorities agreed with this conclusion.
"Wildlife seem to be able to pick up certain phenomenon, especially birds. There are
many reports of birds detecting coming disasters," said Clive Walker, who has written
several books on African wildlife.
Animals certainly rely on the known senses such as smell or hearing to avoid danger
such as predators (食肉动物).
The idea of an animal "sixth sense" is a lasting one that the evidence on Sri Lanka"s
damaged coast is likely to add to.
B. why animals can save them from natural disasters
C. how to protect the wildlife when disaster happens
D. the different opinions about animals" natural power
B. Research has been made on the special movements of animals before disasters.
C. It"s generally considered that animals can sense the coming of disasters.
D. Animals have depended on the known senses to escape the Indian Ocean tsunami.
B. It is the animal"s imagination in the brain.
C. It is some hidden power to say in advance that something will happen.
D. It is a kind of sense that is the same as smell or hearing.
B. Discovery.
C. Science Fiction.
D. Culture.
names". But do you know memory is the single most important thing and it has played a very
important part?
For early men, there were dangerous all around them-bad weather, wild animals. The keys
to keep on living lay in man"s ability to remember these dangers and the ways he had dealt with
them in the past. In order for memories to be stored, the human brain became more complex.
And as man learned how to deal with them, he became civilized (文明).Surprisingly, scientists
today understand little about memory and how it works. They havenot yet found a way to open
up the brain and observe its function without destroying it. Perhaps there are two types of
memory: short-term and long-term. Short-term refers to those facts that stay with us for a few
seconds to a few hours. For instance, when you stay at a hotel, you remember the room number
and forget as soon as you leave. Long-term memory, on the other hand, means you remember
things for a long period of time. If you spend your honeymoon in a particular hotel, it"s likely that
you"ll remember your stay quite clearly.
Scientists also believe that a short-term memory can become a long-term memory through
consolidation (巩固). A lot of chemical and physical changes take place in the part of the brain.
Although the human brain weighs three pounds, it contains 30 billion nerve cells (神经细胞) acting
like a computer. When those changes strengthen the links (联系) in certain nerve cells, a though
becomes a part of the long-term memory.
B. no recorded history
C. no animals
D. no dangers
B. not enough
C. great
D. encouraging
B. it acts like a computer
C. people do more exercise
D. the links in nerve cells are strengthened by certain changes
B. two types of memory
C. 30 billion nerve cells
D. chemical and physical changes
18 and 22 years old. But in the U.S.A today, a college student often is much older. In fact,
educators say in the next few years colleges and universities may have more older part-time
students than traditional (传统的) full-time younger students.
Educators report a big increase in the number of Americans who attend college and university
classes in the evening or at night or weekends. Most of them are older than 25 years old and
more have full-time or part-time jobs. Many are in their thirties or forties.
Why are so many people deciding to spend their time and money in order to continue their
education? Most are doing it because they believe more education will help them to get a better job.
Some are industrial workers whose factories have closed. They are learning new skills to prepare
for other kinds of work. Some of the part-time students are not pleased with the jobs they have.
They are studying for new ones. Some have retired (退休) and are looking for new kinds of work.
Two of every three of the students older than 35 are women. Many of them are returning to school
after years of staying at home to care for children.
Are older students good students? Most teachers say yes. They say older students really want to
learn. They ask difficult questions and are not pleased with simple answers. They often get high grades.
B. full-time students in colleges and universities will be even younger
C. American colleges and universities will take in part-time students equally
D. The number of older students will be greater than that of the younger ones
in their spare time.
B. Most of them are over 25.
C. Most of them are without jobs.
D. The number of students in colleges and universities is reported to have gone up greatly.
B. Most of them believe: more education, better jobs
C. They have lost their jobs
D. They are tired of their jobs they have
B. they often get very good marks (分数)
C. they are more likely to receive a master"s or a doctor"s degree upon graduation
D. they often win high prize
information they needed. Suddenly they saw a lot of very bright spots (点) crossing the
computers" screens. At the same time the computers were working much slower. To find out
what was happening they stopped their work to check some parts of the computers. To their
horror (恐惧), they found out that most of their stored information was got rid of (除掉)
by computer viruses! Obviously all these computers had been infected (感染) by computer
viruses.
It is said that the computer viruses were made by a group of young man fond of playing
tricks. They all had excellent education. They created the viruses just to show their
intelligence. (才智) These kinds of computer viruses are named Jerusalem (耶路撒冷)
Viruses. These viruses can stay in computers for a long time. When the time comes they
will attack the computers by lowering the function (功能), damaging their normal programs
or even getting rid of all the information.
We now come to know that Jerusalem Viruses often attack computers on Fridays and that
they are spreading (传播) to a list of computers. Among the countries that suffering
computer viruses are Britain, Australia, Switzerland and the U.S. But till now, how to
get rid of the terrible remains a problem.
B. test their ability
C. tell the world that they were intelligent
D. play a trick on operators of the computers
B. exist (存在) in any computers
C. be difficult to get rid of at present
D. be able to be got rid of in the near future
B. the normal programs are damaged
C. all the information stored in the computers is gone
D. the computers infected by the viruses can no longer be used
B. The viruses will come to a new computer after staying in the old one for some time.
C. Scientists are trying to find a way to get rid of the viruses.
D. The Jerusalem Viruses are a great harm to human health.
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