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In July 1994 Jupiter, the largest planet in our solar system, was struck by 21 pieces of comet(彗星).When the fragments(碎片)landed in the southern part of the giant planet, the explosions were watched by scientist here on earth. But what if our own planet was hit by a comet?
The year is 2094. It has been announced that a comet is heading towards the earth. Most of it will miss our planet, but two fragments will probably hit the southern part of the earth. The news has caused panic.
On 17 July, a fragment four kilometers wide enters the earth’s atmosphere with a huge explosion. About half of the fragment is destroyed. But the major part survives and hits the South Atlantic at 200 times the speed of sound. The sea boils and an enormous wave is created and spreads. The wall of water rushes towards southern Africa at 800 kilometers an hour. Cities on the African coast are totally destroyed and millions of people are drowned. The waves moves into the Indian Ocean and heads towards Asia.
Millions of people are already dead in the southern part of the earth, but the north won’t escape for long. Tons of broken pieces are thrown into the atmosphere by the explosions. As the sun is hidden by clouds of dust, temperatures around the world fall to almost zero. Crops are ruined. Wars break out as countries fight for food. A year later civilization has collapsed. No more than 10 million people have survived.
Could it really happen? In fact, it has already happened more than once in the history of the earth. The dinosaurs(恐龙)were on the earth for over 160 million years. Then 65 million years ago they suddenly disappeared. Many scientists believed that the earth was hit by a space fragment. The dinosaurs couldn’t survive in the cold climate that followed and they became extinct. Will we meet the same end?
1. Which of the following in NOT true according to the author’s description of the disaster in 2094?
A. The whole world becomes extremely cold.
B. All the coastal cities in Africa are destroyed.
C. The whole mankind becomes extinct.
D. The visit of the comet results in war.
2. Why does the author mention dinosaur at the end of the passage?
A. Because they could only live in the warm climate.
B. Because they once dominated the earth.
C. Because their extinction indicates future disasters.
D. Because dinosaurs and humans never live in the same age
3. In writing the passage, the author intends to ____.
A. give an accurate description of the possible disaster in the future
B. prove that humans will sooner or later be destroyed
C. tell the historical development of the earth
D. warn of a possible disaster in the future
4. It can be concluded that the passage is most probably part of a(n) ____.
A. horror story B. news report
C. research paper D. article of popular science
查看习题详情和答案>>In July 1994 Jupiter, the largest planet in our solar system, was struck by 21 pieces of a comet（彗星）. When the fragment（碎片）landed in the southern part of the giant planet, the explosions were watched by scientists here on earth. But what if our own planet was hit by a comet?
The year is 2094. It has been announced that a comet is heading towards the Earth. Most of it will miss our planet, but two fragments will probably hit the southern part of the Earth. The news has caused panic.
On 17 July, a fragment four kilometers wide enters the Earth’s atmosphere with a huge explosion. About half of the fragment is destroyed. But the major part survives and hits the South Atlantic at 200 times the speed of sound. The sea boils and an enormous wave is created and spreads. The wall of water rushes towards southern Africa at 800 kilometers an hour. Cities on the African coast are totally destroyed and millions of people are drowned. The wave moves into the Indian Ocean and heads towards Asia.
Millions of people are already dead in the southern part of the Earth, but the north won’t escape for long. Tons of broken pieces are thrown into the atmosphere by the explosions. As the sun is hidden by clouds of dust, temperatures around the world fall to almost zero. Crops are ruined. Wars break out as countries fight for food. A year later civilization has collapsed. No more than 10 million people have survived.
Could it really happen? In fact, it has already happened more than once in the history of the Earth. The dinosaurs（恐龙）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 space fragment. The dinosaurs couldn’t survive in the cold climate that followed and they became extinct. Will we meet the same end?
1. Which of the following is NOT TRUE according to the author’s description of the disaster in 2094?
The whole mankind becomes extinct.
All the coastal cities in African are destroyed.
The whole world becomes extremely cold.
The visit of the comet results in wars.
2.Why does the author mention dinosaurs at the end of the passage?
A. Because they could only live in the warm climate.
B. Because they once dominated the Earth.
C. Because dinosaurs and humans never live in the same age.
D. Because their extinction indicates future disasters
3. In writing the passage, the author intends to __________.
A. give an accurate description of the possible disaster in the future
B. warn of a possible disaster in the future
C. tell the historical development of the Earth
D. prove that humans will sooner or later be destroyed
4.It can be concluded that the passage is most probably part of a(n) __________.
A. horror story B. news report
C. article of popular science D. research paper
查看习题详情和答案>>
A Charlotte, N.C., man was charged with first-degree murder of a 79-year-old woman whom police said he scared to death. In an attempt to evade policemen after a bank robbery, the Associated Press reports that 20-year-old Larry Whitfield broke into the home of Mary Parnell. Police say he didn’t touch Parnell but that she died after suffering a heart attack that was caused by terror. Can the guy be held responsible for the woman’s death? Prosecutors(公诉人) said that he can under the state’s murder rule, which allows someone to be charged with murder if he or she causes another person’s death while committing or fleeing from a severe crime like robbery—even if he or she doesn’t kill someone on purpose.
But, medically speaking, can someone actually be frightened to death? We asked Martin Samuels, chairman of the neurology department at Brigham and Women’s Hospital in Boston.
Absolutely, no question about it.
The body has a natural protective method called the fight-or-flight response(战或逃反应), which was originally described by Walter Cannon，the chairman of Harvard University’s physiology department from 1906 to 1942. If, in the wild, an animal is faced with a life-threatening situation, the autonomic nervous system responds by increasing heart rate, increasing blood flow to the muscles, and slowing digestion, among other things. All of this increases the chances of succeeding in a fight or running away from an aggressive beast. This process certainly would be of help to primitive humans. However, in the modern world there is obvious decline of the fight-or-flight response.
The autonomic nervous system uses the chemical messenger to send signals to various parts of the body to activate the fight-or-flight response. This chemical is toxic in large amounts; it damages the organs such as the heart, lungs, liver and kidneys. It is believed that almost all sudden deaths are caused by damage to the heart. There is almost no other organ that would fail so fast as to cause sudden death. Kidney failure, liver failure, those things don’t kill you suddenly.
By the way, any strong positive or negative emotions such as happiness or sadness can cause the same result. There are people who have died in intercourse or in religious passion. There was a case of a golfer who hit a hole in one, turned to his partner and said, “I can die now”, and then he dropped dead. For about seven days after the 9/11 terrorist attacks on the World Trade Center and Pentagon there was an increase of sudden cardiac death among New Yorkers.
1.Why the Charlotte, N.C., man was charged?
A. Because he threatened the policemen to kill an old woman.
B. Because he caused an old woman’s terror and she died.
C. Because he beat an old woman and caused her heart attack
D. Because he murdered an old woman while robbing a bank.
2. What is Martin Samuels’ attitude to the possibility of being frightened to death?
A. Approval. B. Disapproval. C. Doubtful. D. Indifferent.
3.Which of the following about the fight-or-flight response is true?
A. The fight-or-flight response was raised and proved by Martin A. Samuels.
B. It is a natural protective method that can’t be found in all creatures but humans.
C. The ancient humans had a superior fight-or-flight response than modern ones.
D. The fight-or-flight response is beneficial to both our actions and organs.
4. What activity can we infer is less likely to damage the organs?
A. Winning a big lottery. B. Missing a dead family.
C. Watching a horror movie. D. Listening to a sweet song.
5.The purpose of the passage is_________.
A. to explain why people will die of a heart attack
B. to offer some advice on protecting us from heart failure
C. to compare different kinds of feelings to cause a death
D. to show strong emotions can cause a sudden death
查看习题详情和答案>>
A Charlotte, N.C., man was charged with first-degree murder of a 79-year-old woman whom police said he scared to death. In an attempt to evade policemen after a bank robbery, the Associated Press reports that 20-year-old Larry Whitfield broke into the home of Mary Parnell. Police say he didn’t touch Parnell but that she died after suffering a heart attack that was caused by terror. Can the guy be held responsible for the woman’s death? Prosecutors(公诉人) said that he can under the state’s murder rule, which allows someone to be charged with murder if he or she causes another person’s death while committing or fleeing from a severe crime like robbery—even if he or she doesn’t kill someone on purpose.
But, medically speaking, can someone actually be frightened to death? We asked Martin Samuels, chairman of the neurology department at Brigham and Women’s Hospital in Boston.
Absolutely, no question about it.
The body has a natural protective method called the fight-or-flight response(战或逃反应), which was originally described by Walter Cannon，the chairman of Harvard University’s physiology department from 1906 to 1942. If, in the wild, an animal is faced with a life-threatening situation, the autonomic nervous system responds by increasing heart rate, increasing blood flow to the muscles, and slowing digestion, among other things. All of this increases the chances of succeeding in a fight or running away from an aggressive beast. This process certainly would be of help to primitive humans. However, in the modern world there is obvious decline of the fight-or-flight response.
The autonomic nervous system uses the chemical messenger to send signals to various parts of the body to activate the fight-or-flight response. This chemical is toxic in large amounts; it damages the organs such as the heart, lungs, liver and kidneys. It is believed that almost all sudden deaths are caused by damage to the heart. There is almost no other organ that would fail so fast as to cause sudden death. Kidney failure, liver failure, those things don’t kill you suddenly.
By the way, any strong positive or negative emotions such as happiness or sadness can cause the same result. There are people who have died in intercourse or in religious passion. There was a case of a golfer who hit a hole in one, turned to his partner and said, “I can die now”, and then he dropped dead. For about seven days after the 9/11 terrorist attacks on the World Trade Center and Pentagon there was an increase of sudden cardiac death among New Yorkers.
Why the Charlotte, N.C., man was charged?
A. Because he threatened the policemen to kill an old woman.
B. Because he caused an old woman’s terror and she died.
C. Because he beat an old woman and caused her heart attack
D. Because he murdered an old woman while robbing a bank.
What is Martin Samuels’ attitude to the possibility of being frightened to death?
A. Approval. B. Disapproval. C. Doubtful. D. Indifferent.
Which of the following about the fight-or-flight response is true?
A. The fight-or-flight response was raised and proved by Martin A. Samuels.
B. It is a natural protective method that can’t be found in all creatures but humans.
C. The ancient humans had a superior fight-or-flight response than modern ones.
D. The fight-or-flight response is beneficial to both our actions and organs.
What activity can we infer is less likely to damage the organs?
A. Winning a big lottery. B. Missing a dead family.
C. Watching a horror movie. D. Listening to a sweet song.
The purpose of the passage is_________.
A. to explain why people will die of a heart attack
B. to offer some advice on protecting us from heart failure
C. to compare different kinds of feelings to cause a death
D. to show strong emotions can cause a sudden death
查看习题详情和答案>>阅读下面短文，掌握其大意，从每题所给的A、B、C、D四个选项中，选出最佳选项。
Nowadays lots of students ask their parents for money to buy things they like. For me, to ask for money is like entering a(n) _36__. I learned this from 37 .
Last year my mother told me that the _ 38 way I would get a driver’s license before I turned eighteen depended on _ 39 I paid for the classes myself. “What?” I asked in _ 40 . But I knew _ 41 that my reasoning would have no_ 42 on the situation, 43__ by the look on my mother’s face.
Three weeks later, I started working _ 44 a hostess at a factory, twice a week. A month later I paid $ 270 for driving lessons, and then over $ 20 to _ 45 my permit test. My pockets were empty _ 46 as soon as they were filled.
My mother thought that I’d be _ 47 to do things without her help. The funny thing was that even though I was totally _ 48 in the beginning, I truly appreciated it, _ 49 if I had just been handed bills from her.
When I realized that my mother wasn’t going to _ 50 something like a driver’s license, at first, it seemed as if she had __51__ an immovable block before me and I would never _ 52 it. But my mother was __53 _. She knew that I wanted a luxury（奢侈品）but _ 54 me to get it. That is as _ 55 as this ---- if I really want it, I’ll find a way to get it myself.
1.A. office B. prison C. battlefield D. bank
2.A. facts B. experience C. lessons D. quarrels
3.A. best B. proper C. same D. only
4.A. whether B. that C. how D. when
5.A. trouble B. disbelief C. comfort D. horror
6.A. hurriedly B. jokingly C. instantly D. surprisingly
7.A. effect B. sense C. effort D. result
8.A. judged B. judging C. to judge D. being judged
9.A. with B. for C. like D. as
10.A. pass B. take C. hold D. gain
11.A. almost B. even C. still D. yet
12.A. ready B. likely C. unhappy D. unable
13.A. terrified B. annoyed C. tired D. disturbed
14.A. more than B. rather than C. no more D. no longer
15.A. pay B. raise C. buy D. support
16.A. laid B. lay C. lied D. lain
17.A. get about B. get by C. get through D. get over
18.A. wise B. mistaken C. strict D. kind
19.A. dared B. hoped C. encouraged D. expected
20.A. well B. far C. soon D. simple
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