Many people believe the glare from snow causes snow-blindness. Yet, dark glasses or not , they find themselves suffering from headaches and watering eyes, and even snow-blindness, when exposed to several hours of “snow light”. The United States Army has now determined that glare from snow does not cause snow-blindness in troops in a snow-covered country. Rather, a man's eyes frequently find nothing to focus on in a broad expanse of barren (少植被的) snow-covered terrain (地形). So his gaze continually shifts and jumps back and forth over the entire landscape in search of something to look at. Finding nothing, hour after hour, the eyes never stop searching and the eyeballs become sore and the eye muscles ache. Nature eases this irritation by producing more fluid which covers the eyeball. The fluid covers the eyeball in increasing quantity until vision blurs (模糊), then is obscured (遮蔽), and the result is total, even though temporary, snow-blindness.
Experiments led the Army to a simple method of overcoming this problem. Scouts ahead of a main body of troops are trained to shake snow from evergreen bushes, creating a dotted line as they cross completely snow-covered landscape. Even the scouts themselves throw lightweight, dark colored objects ahead on which they too can focus. The men following can then see something. Their gaze is arrested. Their eyes focus on a bush and having found something to see, stop scouring the snow-blanketed landscape. By focusing their attention on one object at a time, the men can cross the snow without becoming hopelessly snow-blind or lost. In this way the problem of crossing a solid white terrain is overcome.
1. To prevent headaches, watering eyes and blindness caused by the glare from snow, dark
glasses are _________.
A. indispensable and essential B. useful C. ineffective D. available
2. When the eyes are sore tears are produced to _________.
A. balance the pain B. treat snow-blindness
C. clear the vision D. loosen the muscles
3. Snow-blindness may be avoided by _________.
A. concentrating on the solid white terrain
B. searching for something to look at in snow-covered terrain
C. providing the eyes with something to focus on
D. covering the eyeballs with more fluid
4. The scouts shake snow from evergreen bushes in order to _________.
A. prevent the men behind losing their way
B. beautify the landscape of the terrain
C. warm themselves in the severe cold
D. give the men behind something to see
5. A suitable title for this passage would be _________.
A. nature's cure for snow-blindness B. snow-blindness and how to overcome it
C. soldiers marching in the snow D. snow vision and its effect on eyesight
高一英语阅读理解简单题
Many people believe the glare from snow causes snow-blindness. Yet, dark glasses or not , they find themselves suffering from headaches and watering eyes, and even snow-blindness, when exposed to several hours of “snow light”. The United States Army has now determined that glare from snow does not cause snow-blindness in troops in a snow-covered country. Rather, a man's eyes frequently find nothing to focus on in a broad expanse of barren (少植被的) snow-covered terrain (地形). So his gaze continually shifts and jumps back and forth over the entire landscape in search of something to look at. Finding nothing, hour after hour, the eyes never stop searching and the eyeballs become sore and the eye muscles ache. Nature eases this irritation by producing more fluid which covers the eyeball. The fluid covers the eyeball in increasing quantity until vision blurs (模糊), then is obscured (遮蔽), and the result is total, even though temporary, snow-blindness.
Experiments led the Army to a simple method of overcoming this problem. Scouts ahead of a main body of troops are trained to shake snow from evergreen bushes, creating a dotted line as they cross completely snow-covered landscape. Even the scouts themselves throw lightweight, dark colored objects ahead on which they too can focus. The men following can then see something. Their gaze is arrested. Their eyes focus on a bush and having found something to see, stop scouring the snow-blanketed landscape. By focusing their attention on one object at a time, the men can cross the snow without becoming hopelessly snow-blind or lost. In this way the problem of crossing a solid white terrain is overcome.
1.To prevent headaches, watering eyes and blindness caused by the glare from snow, dark
glasses are _________.
A. indispensable and essential B. useful C. ineffective D. available
2.When the eyes are sore tears are produced to _________.
A. balance the pain B. treat snow-blindness
C. clear the vision D. loosen the muscles
3.Snow-blindness may be avoided by _________.
A. concentrating on the solid white terrain
B. searching for something to look at in snow-covered terrain
C. providing the eyes with something to focus on
D. covering the eyeballs with more fluid
4.The scouts shake snow from evergreen bushes in order to _________.
A. prevent the men behind losing their way
B. beautify the landscape of the terrain
C. warm themselves in the severe cold
D. give the men behind something to see
5.A suitable title for this passage would be _________.
A. nature's cure for snow-blindness
B. snow-blindness and how to overcome it
C. soldiers marching in the snow
D. snow vision and its effect on eyesight
高一英语阅读理解中等难度题查看答案及解析
Many people believe the glare from snow causes snow-blindness. Yet, dark glasses or not , they find themselves suffering from headaches and watering eyes, and even snow-blindness, when exposed to several hours of “snow light”. The United States Army has now determined that glare from snow does not cause snow-blindness in troops in a snow-covered country. Rather, a man's eyes frequently find nothing to focus on in a broad expanse of barren (少植被的) snow-covered terrain (地形). So his gaze continually shifts and jumps back and forth over the entire landscape in search of something to look at. Finding nothing, hour after hour, the eyes never stop searching and the eyeballs become sore and the eye muscles ache. Nature eases this irritation by producing more fluid which covers the eyeball. The fluid covers the eyeball in increasing quantity until vision blurs (模糊), then is obscured (遮蔽), and the result is total, even though temporary, snow-blindness.
Experiments led the Army to a simple method of overcoming this problem. Scouts ahead of a main body of troops are trained to shake snow from evergreen bushes, creating a dotted line as they cross completely snow-covered landscape. Even the scouts themselves throw lightweight, dark colored objects ahead on which they too can focus. The men following can then see something. Their gaze is arrested. Their eyes focus on a bush and having found something to see, stop scouring the snow-blanketed landscape. By focusing their attention on one object at a time, the men can cross the snow without becoming hopelessly snow-blind or lost. In this way the problem of crossing a solid white terrain is overcome.
1. To prevent headaches, watering eyes and blindness caused by the glare from snow, dark
glasses are _________.
A. indispensable and essential B. useful C. ineffective D. available
2. When the eyes are sore tears are produced to _________.
A. balance the pain B. treat snow-blindness
C. clear the vision D. loosen the muscles
3. Snow-blindness may be avoided by _________.
A. concentrating on the solid white terrain
B. searching for something to look at in snow-covered terrain
C. providing the eyes with something to focus on
D. covering the eyeballs with more fluid
4. The scouts shake snow from evergreen bushes in order to _________.
A. prevent the men behind losing their way
B. beautify the landscape of the terrain
C. warm themselves in the severe cold
D. give the men behind something to see
5. A suitable title for this passage would be _________.
A. nature's cure for snow-blindness B. snow-blindness and how to overcome it
C. soldiers marching in the snow D. snow vision and its effect on eyesight
高一英语阅读理解简单题查看答案及解析
Does stress cause gray hair? Many people believe that tension and stress can cause your hair to lose its color. In fact, it is an old-wives’ tale that being upset all the time can result in premature graying. Here is a closer look at this situation and why some believe that this old wives’ tale could be true.
As one ages, the hairs on the head also age. In fact, just about everything on the human body begins to show signs of wear and tear (磨损) after a while. The joints wear and become stiff and skin wears and becomes wrinkled. Hairs on the head grow and eventually die. They are replaced, but in the process something else happens.
When new hairs are replacing the old ones, the color or pigment (色素) is also added to them. However, as one ages, this pigment becomes less and less available. At first, hairs will have a limited amount of pigment and they will appear to be grayish in color. In time, they will lose all of their pigment and will be white. Many things are known to cause graying, and genetics is a very powerful factor. If one of your parents turns gray at an early age, there is a good chance that you will too. Some people begin the graying process in high school, while others may be over the age of forty.
Constant worry and tension can have many harmful effects on the human body. It is a known fact that stressful times can cause one to suffer hair loss. It would make sense that if it can cause these problems, perhaps it also may contribute to graying. However, there is no sound evidence to support this.
On the other hand, many medical professionals believe that there may be a link between graying and a constant state of anxiety or tension. Does stress cause gray hair? There is no scientific evidence to support the theory, but it is best to avoid stressful situations.
1.The underlined phrase in the first paragraph most probably means________.
A.clever remarks B.silly remarks C.exciting remarks D.disappointed remarks
2.The second paragraph mainly tells us __________.
A.every part of body is replaced with age B.hairs will grow weak but not die
C.skin becomes wrinkled with age D.every part of body ages with age
3.What might play the most important role in the graying process?
A.Genetics and the amount of sleeping time.
B.The amount of food people eat and living environment.
C.The amount of pigment and genetics.
D.Genetics and the amount of water people drink
4.From the passage we can infer that________.
A.stress causing gray hair is still in question
B.gray hair has nothing to do with tension
C.stressful situations can be of benefit
D.sound evidence has been found
高一英语阅读理解中等难度题查看答案及解析
Does stress cause gray hair? Many people believe that tension and stress can cause your hair to lose its color. In fact, it is an old-wives’ tale that being upset all the time can result in premature graying. Here is a closer look at this situation and why some believe that this old wives’ tale could be true.
As one ages, the hairs on the head also age. In fact, just about everything on the human body begins to show signs of wear and tear (磨损) after a while. The joints wear and become stiff and skin wears and becomes wrinkled. Hairs on the head grow and eventually die. They are replaced, but in the process something else happens.
When new hairs are replacing the old ones, the color or pigment (色素) is also added to them. However, as one ages, this pigment becomes less and less available. At first, hairs will have a limited amount of pigment and they will appear to be grayish in color. In time, they will lose all of their pigment and will be white. Many things are known to cause graying, and genetics is a very powerful factor. If one of your parents turns gray at an early age, there is a good chance that you will too. Some people begin the graying process in high school, while others may be over the age of forty.
Constant worry and tension can have many harmful effects on the human body. It is a known fact that stressful times can cause one to suffer hair loss. It would make sense that if it can cause these problems, perhaps it also may contribute to graying. However, there is no sound evidence to support this.
On the other hand, many medical professionals believe that there may be a link between graying and a constant state of anxiety or tension. Does stress cause gray hair? There is no scientific evidence to support the theory, but it is best to avoid stressful situations.
1.The underlined phrase in the first paragraph most probably means________.
A. clever remarks B. silly remarks C. exciting remarks D. disappointed remarks
2.The second paragraph mainly tells us __________.
A. every part of body is replaced with age B. hairs will grow weak but not die
C. skin becomes wrinkled with age D. every part of body ages with age
3.What might play the most important role in the graying process?
A. Genetics and the amount of sleeping time.
B. The amount of food people eat and living environment.
C. The amount of pigment and genetics.
D. Genetics and the amount of water people drink
4.From the passage we can infer that ________.
A. stress causing gray hair is still in question
B. gray hair has nothing to do with tension
C. stressful situations can be of benefit
D. sound evidence has been found
高一英语阅读理解中等难度题查看答案及解析
The big snow caused great ______ to the people living in the south of China, ______ some of them homeless.
A. destroy; left B. damage; leaving C. ruin; having left D. wound; leaving
高一英语单项填空中等难度题查看答案及解析
The big snow caused great _______to the people living in the south of China, ________some of them homeless.
A. destroy; left B. damage; leaving
C. ruin; having left D. wound; leaving
高一英语单项填空中等难度题查看答案及解析
In the United States, 30 percent of the people have a “weight problem”. To many people the cause is obvious (明显的): they eat too much. But scientific evidence (证据) does little to support this idea. Going back to America of 1910, we find that people were thinner than today, yet they at e more food. In those days people worked harder physically, walked more, used machines much less, and didn’t watch television.
Several modern studies, moreover, have shown that fatter people don’t eat more on average than thinner people. A 1979 study of 3,545 London office workers showed that fat people eat less than slim (苗条的) people.
Studies also show that slim people are more active than fat people. A study by a research group at Stanford University found the following interesting facts:
The more the man ran, the greater loss of the body fat.
The more they ran, the greater increase in food intake.
Thus, those who ran the most ate the most, yet lost the greatest amount of body fat.
1.Nowadays many Americans have the problem that ______.
| A．they are too slim | B．they work too hard |
| C．they are too fat | D．they lose too much body fat |
2.According to the passage, how many people in 900 Americans have a “weight problem”?
| A．150. | B．300. | C．600. | D．270. |
3.Is there any scientific evidence to support the idea that eating too much is the cause of a “weight problem”?
| A．Yes, there is plenty of evidence. |
| B．Of course, there is some evidence to support this. |
| C．There is hardly any scientific evidence to support this. |
| D．We are not sure. |
4.The Americans in 1910 ________.
| A．ate more food and had more physical activities |
| B．ate less food but had more physical activities |
| C．ate less food and had less physical activities |
| D．had more problems |
高一英语阅读理解简单题查看答案及解析
In the United States, 30 percent of the people have a “weight problem”. To many people the cause is obvious (明显的): they eat too much. But scientific evidence (证据) does little to support this idea. Going back to America of 1910, we find that people were thinner than today, yet they ate more food. In those days people worked harder physically, walked more, used machines much less, and didn’t watch television.
Several modern studies, moreover, have shown that fatter people don’t eat more on average than thinner people. A 1979 study of 3,545 London office workers showed that fat people eat less than slim (苗条的) people.
Studies also show that slim people are more active than fat people. A study by a research group at Stanford University found the following interesting facts:
The more the man ran, the greater loss of the body fat.
The more they ran, the greater increase in food intake.
Thus, those who ran the most ate the most, yet lost the greatest amount of body fat.
1. Nowadays many Americans have the problem that ______.
A. they are too slim B. they work too hard
C. they are too fat D. they lose too much body fat
2. According to the passage, how many people in 900 Americans have a “weight problem”?
A. 150. B. 300. C. 600. D. 270.
3.Is there any scientific evidence to support the idea that eating too much is the cause of a “weight problem”?
A. Yes, there is plenty of evidence.
B. Of course, there is some evidence to support this.
C. There is hardly any scientific evidence to support this.
D. We are not sure.
4.The Americans in 1910 ________.
A. ate more food and had more physical activities
B. ate less food but had more physical activities
C. ate less food and had less physical activities
D. had more problems
高一英语阅读理解中等难度题查看答案及解析
In the United States, 30 percent of the people have a “weight problem”。To many people the cause is obvious (明显的): they eat too much. But scientific evidence (证据) does little to support this idea. Going back to America of 1910, we find that people were thinner than today, yet they ate more food. In those days people worked harder physically, walked more, used machines much less, and didn’t watch television.
Several modern studies, moreover, have shown that fatter people don’t eat more on average than thinner people. A 1979 study of 3,545 London office workers showed that fat people eat less than slim (苗条的) people.
Studies also show that slim people are more active than fat people. A study by a research group at Stanford University found the following interesting facts:
The more the man ran, the greater loss of the body fat
The more they ran, the greater increase in food intake.
Thus, those who ran the most ate the most, yet lost the greatest amount of body fat.
1. Nowadays many Americans have the problem that ______.
A. they are too slim B. they work too hard C. they are too fat D. they lose too much body fat
2.According to the passage, how many people in 900 Americans have a “weight problem”?
A. 150. B. 300. C. 600. D. 270.
3.Is there any scientific evidence to support the idea that eating too much is the cause of a “weight problem”?
A. Yes, there is plenty of evidence. B. Of course, there is some evidence to support this.
C. There is hardly any scientific evidence to support this. D. We are not sure.
4.The Americans in 1910 ________. A. ate more food and had more physical activities
B. ate less food but had more physical activities
C. ate less food and had less physical activities D. had more problems
高一英语阅读理解中等难度题查看答案及解析
The sudden snow in Beijing on November 4, 2012 caught people by surprise. Many drivers got stuck on the road, ________.
A．coldly and helplessly B．cold and helpless
C．being cold and helpless D．in cold and helplessness
高一英语单项填空简单题查看答案及解析