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Watching some children trying to catch butterflies one hot August afternoon, I was reminded of an incident in my own childhood.When I was a boy of 12 in South Carolina, something happened to me that cured me forever of wanting to put any wild creature in a cage.We lived on the edge of a wood, and every evening at dusk the mockingbirds would come and rest in the trees and sing. There isn’t a musical instrument made by man that can produce a more beautiful sound than the song of the mockingbird.
I decided that I would catch a young bird and keep it in a cage and in that way would have my own private musician.
I finally succeeded in catching one and put it in a cage. At first, in its fright at being captured, the bird fluttered about the cage, but eventually it settled down in its new home. I felt very pleased with myself and looked forward to some beautiful singing from my tiny musician.
I had left the cage out on our back porch, and on the second day of the bird’s captivity my new pet’s mother flew to the cage with food in her mouth. The baby bird ate everything she brought to it. I was pleased to see this. Certainly the mother knew better than I how to feed her baby.
The following morning when I went to see how my captive was doing, I discovered it on the floor of the cage, dead. I was shocked! What had happened! I had taken excellent care of my little bird, or so I thought.
Arthur Wayne, the famous ornithologist, happened to be visiting my father at the time, hearing me crying over the death of my bird, explained what had occurred. “A mother mockingbird, finding her young in a cage, will sometimes bring it poison berries. She thinks it better for her young to die than to live in captivity.”
Never since then have I caught any living creature and put it in a cage. All living creatures have a right to live free.
【小题1】Why did the writer catch a mockingbird when he was a boy of 12?
| A.He had just got a new cage. | B.He liked its beautiful feather. |
| C.He wanted it to sing for him. | D.He wanted a pet for a companion. |
| A.was frightened to death | B.ate the poisonous food its mother gave it |
| C.refused to eat anything | D.drank the poisonous water by mistake |
| A.a religious person | B.a kind person |
| C.a schoolmaster | D.an expert in birds |
| A.Freedom is very valuable to all creatures. |
| B.All birds put in a cage won’t live long. |
| C.You should keep the birds from their mother. |
| D.Be careful about food you give to baby birds. |
A Charlotte N.C. man was charged with first-degree murder of a 79-year-old woman whom police said he scared to death. 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—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, which was originally described by Walter Cannon,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 automatic 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 early 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 poisonous 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.
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 excitement 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.
1.What is Martin Samuels’ attitude to the possibility of being frightened to death?
A. Approval. B. Disapproval. C. Doubtful. D. Indifferent.
2.What can we learn about the fight-or-flight response according to the passage?
A. The fight-or-flight response was raised and proved by Martin Samuels.
B. It is a natural protective method that can’t be found in all creatures but humans.
C. The ancient humans had a better fight-or-flight response than modern ones.
D. The fight-or-flight response is beneficial to both our actions and organs.
3.What activity can we infer is less likely to damage the organs?
A. Winning an unexpected fortune.
B. Missing a dead family member.
C. Watching a horror movie.
D. Listening to a sweet song.
4.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
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Suppose we built a robot to explore the planet Mars. We provide the robot with seeing detectors(探测器) to keep it away from danger. It is powered entirely by the sun. Should we program the robot to be equally active at all times? No, the robot would be using up energy at a time when it was not receiving any. So we would probably program it to stop its activity at night and to wake up at dawn the next morning.
According to evolutionary(进化的) theory of sleep, evolution equipped us with a regular pattern of sleeping and waking for the same reason. The theory does not deny that sleep provides some important restorative functions. It merely says that evolution has programmed us to perform those functions at a time when activity would be inefficient and possibly dangerous. However, sleep protects us only from the sort of trouble we might walk into; it does not protect us from trouble that comes looking for us. So we sleep well when we are in a familiar, safe place, but we sleep lightly, if at all, when we fear that bears will nose into the tent.
The evolutionary theory explain the differences in sleep among creatures. Why do cats, for instance, sleep so much, while horses sleep so little? Surely cats do not need five times as much repair and restoration as horses do. But cats can afford to have long periods of inactivity because they spend little time eating and are unlikely to be attacked while they sleep. Horses must spend almost all their waking hours eating, because what they eat is very low in energy value. Moreover, they cannot afford to sleep too long or too deeply, because their survival depends on their ability to run away from attackers.
1. The author uses the example of the robot in space exploration to tell us _______.
A. the differences between robots and men
B. the reason why men need to sleep
C. about the need for robots to save power
D. about the danger of men working at night
2. Evolution has programmed man to sleep at night chiefly to help him ______.
A. keep up a regular pattern of life
B. prevent trouble that comes looking for him
C. avoid danger and inefficient labor
D. restore his bodily functions
3. Which of the following is the main idea of the passage?
A. Evolution has equipped all creatures with a regular pattern of sleeping and waking.
B. The study of sleep is an important art of the evolutionary theory.
C. Sleeping patterns must be taken into consideration in the designing of robots.
D. The sleeping pattern of a living creature is determined by the food it eats.
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>>
Watching some children trying to catch butterflies one hot August afternoon, I was reminded of an incident in my own childhood.When I was a boy of 12 in South Carolina, something happened to me that cured me forever of wanting to put any wild creature in a cage.
We lived on the edge of a wood, and every evening at dusk the mockingbirds would come and rest in the trees and sing. There isn’t a musical instrument made by man that can produce a more beautiful sound than the song of the mockingbird.
I decided that I would catch a young bird and keep it in a cage and in that way would have my own private musician.
I finally succeeded in catching one and put it in a cage. At first, in its fright at being captured, the bird fluttered about the cage, but eventually it settled down in its new home. I felt very pleased with myself and looked forward to some beautiful singing from my tiny musician.
I had left the cage out on our back porch, and on the second day of the bird’s captivity my new pet’s mother flew to the cage with food in her mouth. The baby bird ate everything she brought to it. I was pleased to see this. Certainly the mother knew better than I how to feed her baby.
The following morning when I went to see how my captive was doing, I discovered it on the floor of the cage, dead. I was shocked! What had happened! I had taken excellent care of my little bird, or so I thought.
Arthur Wayne, the famous ornithologist, happened to be visiting my father at the time, hearing me crying over the death of my bird, explained what had occurred. “A mother mockingbird, finding her young in a cage, will sometimes bring it poison berries. She thinks it better for her young to die than to live in captivity.”
Never since then have I caught any living creature and put it in a cage. All living creatures have a right to live free.
1.Why did the writer catch a mockingbird when he was a boy of 12?
A.He wanted it to sing for him B.He had just got a new cage.
C.He liked its beautiful feather. D.He wanted a pet for a companion.
2.The mockingbird died because it ______.
A.was frightened to death
B.drank the poisonous water by mistake
C.ate the poisonous food its mother gave it
D.refused to eat anything
3.An ornithologist probably means ______.
A.a religious person B.a kind person C.an expert in birds D.a schoolmaster
4.What is the most important lesson the writer learned from the incident?
A.Be careful about food you give to baby birds.
B.All birds put in a cage won’t live long.
C.You should keep the birds from their mother.
D.Freedom is very valuable to all creatures.
查看习题详情和答案>>