Doctors studying the human brain have given a number of examples of this amazing power of aphasics. Some have even compared this power to that of a dog with an ability to find out the drugs hidden in the
baggage.
Recently, scientists carried out tests to see if all that was said about aphasics was true. They studied a mixed group of people. Some were normal, others were aphasic. It was proved that the aphasics were far ahead of the normal people in recognizing false speeches-in most cases, the normal people were fooled by words, but the aphasics were not.
Some years ago, Dr. Oliver Sacks wrote in his book about his experiences with aphasics. He
mentioned a particular case in a hospital. Some aphasics were watching the president giving a speech on
TV. Since the president had been an actor earlier, making a good speech was no problem for him. He was trying to put his feelings into every word of his speech.
But his way of speaking had the opposite effect on the patients. They didn"t seem to believe him.
Instead, they burst into laughter. The aphasics knew that the president did not mean a word of what he
was saying. He was lying!
Many doctors see aphasics as people who are not completely normal because they lack the ability to
understand words. However, according to Dr. Sacks, they are more gifted than normal people. Normal
people may get carried away by words. Aphasics seem to understand human expressions better, though
they cannot understand words.
B. They can find out the hidden drugs.
C. They can understand language better.
D. They can tell whether people are lying.
B. By organizing them into acting groups.
C. By comparing them with normal people.
D. By giving them chances to speak on TV.
B. Aphasics have richer feelings than others.
C. Normal people often tell lies in their speeches.
D. People poor at one thing can be good at another
It is interesting how NASA (美国航空航天管理局) chose their astronauts (宇航员)
for landing them on the moon. They chose men__1__ the age of twenty and thirty-five. There
were about fifty of them. Many were__2___air pilots.__3__were scientists with two
or three degrees. NASA telephoned each man they were going to choose, told them the
plans and the__4__they might get in. They then asked him if he was willingto be trained
as an astronaut. "How could any man__5__such an exciting job?" one of them said.
"Dangerous? Of course, it"s dangerous,__6__most exciting! "
The health and physical condition of __7__was, of course, very necessary.__8__those in
very good health and physical condition were chosen.
While being trained to be astronauts, they went through many__9__. They studied the
stars and the moon, and they also studied geology, the science of rocks. This was
necessary__10__astronauts would have to look for rocks on the moon. They would try to
find rocks which might help to tell the__11__of the moon. They were all__12__to fly in
helicopters. These helicopters landed__13__down to give them some experience of the
way the spaceship would.__14__land on the moon. They were also taught all the__15__
facts about the conditions. They learnt all the technical details of the spaceships and
rockets. They visited the scientists and engineers who__16__them. They visited the
factories where they were__17__.They learnt how every__18__of a spaceship and
its instruments work. They also learnt every detail of ground-control__19___.
In a word, to be chosen as an astronaut, one must be in good health,__20__in
science and good at piloting.
( )2.A. experienced
( )3.A. None
( )4.A. danger
( )5.A. accept
( )6.A. but
( )7.A. the scientists
( )8.A. As
( )9.A. jobs
( )10.A. for
( )11.A. story
( )12.A. shown
( )13.A. straight
( )14.A. possibly
( )15.A. not known
( )16.A. drew
( )17.A. repaired
( )18.A. part
( )19.A. house
( )20.A. well-done
B. old
B. Few
B. sadness
B. receive
B. if
B. men
B. Only
B. places
B. because
B. background
B. trained
B. straightly
B. likely
B. well-known
B. produced
B. built
B. movement
B. stop
B. well fed
C. trained
C. Others
C. hardship
C. offer
C.though
C. pilots
C. If
C. courses
C. since
C. age
C. told
C. indirectly
C. actually
C. unknown
C. designed
C. developed
C. machine
C. system
C. well-kept
D. young
D. They
D. troubles
D. refuse
D.however
D. young people
D. Or
D. ways
D. so that
D. name
D. let
D. directly
D. really
D. known
D. made
D. fixed
D. body
D. station
D. well-informed
Washington, the USA. He said that they looked like saucers. Newspapers printed
his story under the headline" Flying Saucers".
Since then, all over the world, people have reported similar strange flying objects.
No one knows what they are or where they come from. Some people say that they
do not exist, but many others say that they have seen them. Usually people on the
ground have seen them but not always. Airline pilots also have reported seeing them
and so have astronauts-the men who fly in spaceships.
Perhaps some people saw them only in their imagination or illusion(幻觉). Perhaps
some people made a mistake. But airline pilots and astronauts do not usually make
mistakes of this kind. Captain Ed Mitchell, the sixth man to walk on the moon, said in
1974 that he believed that some" flying sancers (飞碟) " were real. Many other people
now believe that these strange flying objects are visiting the earth from other worlds in
space. "They have come to greet us," they say.
The American government tried to find out more about these objects. It listened to
a great many people who said they had seen them. But the Govemment Committee
could not decide on what the objects were.It called them UFO, which is short for
"unidentified flying object".
Some even say they have seen people in the flying Saucers!In 1964,a driver of a
police car in new Mexico saw a UFO landing a mile away. When he reached it, there
were two small figures standing near it. They looked like little men. When he reported
on his radio, they got inside the object and flew away.
In 1973 two men were out fishing in Mississippi River. They say they saw a UFO
shaped like an egg. There were three creatures like men but their skins were silver in
colour. They had no eyes, and their mouths were just slits(裂缝) . Their noses and ears
were pointed(尖的).They made the fishermen get inside the UFO for a while. Then the
creatures photographed them and took them to the place where they had been fishing.
There are many other similar stories. Some are probably untrue but some may be
true. No one knows.
B. all officials in Washington
C. an editor of a newspaper
D. the man who flies in saucers
B. know where the objects come from
C.learn more about UFOs
D. report more about UFOs
B. how to observe UFOs
C. the danger of UFOs
D. what we know about UFOs
B. believes that UFOs are real objects flying in the sky
C.is not sure whether there are UFOs or not
D.thinks that these UFOs come from other planets
earth. Most of it will miss our planet, but two pieces will probably hit the southern half
of the earth.
On 17 July, a piece four kilometers wide enters the earth"s atmosphere(大气层) with a
massive explosion. About half of the piece is destroyed, but the remaining part hits the
South Atlantic at 200 times the speed of sound. The sea boils and a huge hole is made in
the sea bed. Huge waves are created and spread outwards from the hole. The wall of water,
a kilometer high, rushes towards southern Africa at 800 kilometers an hour. Cities on the
African coast are totally destroyed and millions of people are drowned.
Before the waves reach South America, the second piece of the comet lands in
Argentina. Earthquakes and volcanoes are set off in the Andes Mountains. The shock
waves move north into Califomia and all around the Pacific Ocean. The cities of Los
Angeles, San Francisco and Tokyo are completely destroyed by earthquakes. Millions
of people in the southern half of the earth are already dead, but the north won"t escape
for long. Because of the explosions, the sun is hidden by clouds of dust, temperatures
around the world fall to almost zero.Crops are ruined. The sun won"t be seen again for
many years. Wars break out as countries fight for food. A year later, no more than 10
million people remain alive.
Could it really happen? In fact, it has already happened more than once in the history
of the Earth. The dinosaurs were on the Earth for over 160 million years. Then 65 million
years ago they suddenly disappeared. Many scientists believe that the Earth was hit by
a piece of object in space. The dinosaurs couldn"t live through the cold climate that
followed and died out. Will we meet the same end?
B. An event of imagination.
C. A research on space.
D. A scientific adventure.
B. damages to cities
C. an Earth explosion
D. huge waves
B. Because the light and heat from the sun can not reach the earth.
C. Because people there can not live at the temperature of zero.
D. Because wars break out among countries.
B.what happened 65 million years ago was an invented story
C. the human beings will die out in 2094
D. the Earth could be hit by other objects in space
Edmund Halley was an English scientist who lived over 200 years ago. He studied the
observations of comets(彗星) which other scientists had made. The orbit of one
particular comet was a very difficult mathematical problem. He could not figure it out.
Neither could other scientists who dealt with such problems.
However, Halley had a friend named Isaac Newton, who was a brilliant mathematician.
Newton thought he had already worked out that problem, but he could not find the
paper on which he had done it. He told Halley that the orbit of a comet had the shape
of an ellipse(椭圆形).
Now Halley set to work. He figured out(觯决,计算出) the orbits of some of the
comets that had been observed by scientists. He made a surprising discovery. The
comets that had appeared in the years 1531, 1607 and 1682 all had the same orbit.
Yet their appearances had been 75 to 76 years apart.
This seemed very strange to Halley. Three different comets followed the same orbit.
The more Halley thought about it, the more he thought that there had not been three
different comets, as people thought. He decided that they had simply seen the same
comet three times. The comet had gone away and had come back again.
It was an astonislung idea! Halley felt certain enough to make a prediction(顶言 )
of what would happen in the future. He decided that this comet would appear in the
year 1758. There were 53 years to go before Halley"s prediction could be tested.
In 1758 the comet appeared in the sky. Halley did not see it, for he had died some
years before. Ever since then that comet had been called Halley"s comet, in his honour.
B. the same comet appearing at different times
C. three different comets appearing three times
D.several comets appearing three times
B. by means of his own careful observation
C. by using the work of other scientists
D. by chance
B.1705
C.1706
D. 1707
B. the orbit of a comet
C. Newton and Halley
D. Halley and his discovery
grow in salty water. Most seaweed is red or brown in color. The Japanese people use this plant from the
sea in many ways. From it, they make a food called Kombu. Kombu is seaweed that has been dried,
cooked, and pressed together. Then it is dried again and cut into long pieces. The Japanese eat a lot of
Kombu and like it very much.
Japanese farmers often use seaweed as fertilizer. It makes their plants grow better. Many farmers
also find seaweed and make a fine food for their animals.
From seaweed the Japanese also get iodine (碘) , which they sell to other countries. Iodine is used
in many ways all over the world. It is used in making medicine. It is added to the salt we use at the table.
Scientists even use one form of iodine to "seed clouds" when they want rain to fall.
B. medicine
C. food
D. fertilizer
B. We eat it before meal.
C. We add it to the soup.
D. We add it to the salt we use at the table.
B. Kombu is made into medicine for farmers
C. the Japanese use seaweed in many ways
D. the Japanese eat a lot of Kombu
B. algae are plants from the sea
C. scientists could probably learn more about seaweed
D. seaweed is the only useful algae
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- 2如图已知∠AOB，有两点M、N. 求作一点P，使点P在∠AOB两边距离相等，且到点M、N的距离也相等，保留作图痕迹并描黑
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