As they migrate(迁移), butterflies and moths(飞蛾) choose the winds they want to fly with, and they change their body positions if they start floating in the wrong direction. This new finding suggests that insects may employ some of the same methods that birds use for traveling long distances. Scientists have long thought that insects were simply at the mercy of the wind.
Fascinating as their skills of flight are, migrating behavior has been difficult to study in insects because many long distant trips happen thousands of feet above ground. Only recently have scientists developed technologies that can detect such little creatures at such great heights.
To their surprise, though, the insects weren’t passive but active travelers on the winds. In autumn, for example, most light winds blew from the east, but the insects somehow sought out ones that carried them south and they positioned themselves to navigate(导航) directly to their wintering homes.
Even in the spring, when most winds flowed northward, the insects didn’t always go with the flow. If breezes weren’t blowing in the exact direction they wanted to go, the insects changed their body positions to compensate(抵消). Many migrating birds do the same thing.
The study also found butterflies and moths actively flew within the air streams that pushed them along. By adding flight speeds to wind speeds, the scientists calculated that butterflies and moths can travel as fast as 100 kilometers an hour. The findings may have real-world applications.
With climate warming, migrating insects are growing in number. Knowing how and when these pests move could help when farmers decide when to spray their crops.
1.What’s the main idea of the text?
A. Insects migrate with the seasons
B. Wind helps insects greatly in migrating
C. insects have real direction
D. Scientists have trouble in observing insects
2.Scientists originally thought that .
A. insects always waited for their favorable winds
B. insects chose the winds they wanted to ride
C. insects were just blown about by the wind
D. insects positioned themselves in the winds
3.It is not easy to study the migrating behavior of the insects because .
A. the little creatures can fly very fast
B. their flight is long and high above ground
C. the wind’s direction is hard to foresee
D. they have no regular migrating courses
4.According to the passage, the findings can .
A. increase insects in number
B. instruct farmers when to spray
C. prevent climate warming
D. help protect insects
高二英语阅读理解中等难度题
As they migrate(迁移), butterflies and moths(飞蛾) choose the winds they want to fly with, and they change their body positions if they start floating in the wrong direction. This new finding suggests that insects may employ some of the same methods that birds use for traveling long distances. Scientists have long thought that insects were simply at the mercy of the wind.
Fascinating as their skills of flight are, migrating behavior has been difficult to study in insects because many long distant trips happen thousands of feet above ground. Only recently have scientists developed technologies that can detect such little creatures at such great heights.
To their surprise, though, the insects weren’t passive but active travelers on the winds. In autumn, for example, most light winds blew from the east, but the insects somehow sought out ones that carried them south and they positioned themselves to navigate(导航) directly to their wintering homes.
Even in the spring, when most winds flowed northward, the insects didn’t always go with the flow. If breezes weren’t blowing in the exact direction they wanted to go, the insects changed their body positions to compensate(抵消). Many migrating birds do the same thing.
The study also found butterflies and moths actively flew within the air streams that pushed them along. By adding flight speeds to wind speeds, the scientists calculated that butterflies and moths can travel as fast as 100 kilometers an hour. The findings may have real-world applications.
With climate warming, migrating insects are growing in number. Knowing how and when these pests move could help when farmers decide when to spray their crops.
1.What’s the main idea of the text?
A. Insects migrate with the seasons
B. Wind helps insects greatly in migrating
C. insects have real direction
D. Scientists have trouble in observing insects
2.Scientists originally thought that .
A. insects always waited for their favorable winds
B. insects chose the winds they wanted to ride
C. insects were just blown about by the wind
D. insects positioned themselves in the winds
3.It is not easy to study the migrating behavior of the insects because .
A. the little creatures can fly very fast
B. their flight is long and high above ground
C. the wind’s direction is hard to foresee
D. they have no regular migrating courses
4.According to the passage, the findings can .
A. increase insects in number
B. instruct farmers when to spray
C. prevent climate warming
D. help protect insects
高二英语阅读理解中等难度题查看答案及解析
As they migrate (迁移), butterflies and moths choose the winds they want to fly with, and they change their body positions if they start floating in the wrong direction. This new finding suggests that insects may employ some of the same methods that birds use for traveling long distances. Scientists have long thought that insects were simply at the mercy of the wind.
Fascinating as their skills of flight are, migrating behavior has been difficult to study in insects because many long distant trips happen thousands of feet above ground. Only recently have scientists developed technologies that can detect (测出) such little creatures at such great heights.
To their surprise, though, the insects weren’t passive travelers on the winds. In autumn, for example, most light winds blew from the east, but the insects somehow sought out ones that carried them south and they positioned themselves to navigate directly to their wintering homes.
Even in the spring, when most winds flowed northward, the insects didn’t always go with the flow. If breezes weren’t blowing in the exact direction they wanted to go, the insects changed their body positions to compensate (补偿). Many migrating birds do the same thing.
The study also found, butterflies and moths actively flew within the air streams that pushed them along. By adding flight speeds to wind speeds, the scientists calculated that butterflies and moths can travel as fast as 100 kilometers an hour. The findings may have real-world applications. With climate warming, migrating insects are growing in number. Knowing how and when these pests move could help when farmers decide when to spray their crops.
1.What’s the main idea of the text?
A. Insects migrate with the seasons.
B. Wind helps insects greatly in migrating.
C. Windsurfing insects have real direction.
D. Scientists have trouble in observing insects.
2.Scientists originally thought that ________.
A. insects always waited for their favorable winds
B. insects chose the winds they wanted to ride
C. insects were just blown about by the wind
D. insects positioned themselves in the winds
3.It is not easy to study the migrating behavior of the insects because ________.
A. the little creatures can fly very fast
B. they have no regular migrating courses
C. the wind’s direction is hard to foresee
D. their flight is long and high above ground
4.We can learn from the text that _________.
A. insects fly in the way birds do
B. insects travel more easily in autumn
C. insects never position themselves when flying low
D. insects rest a lot when the wind pushes them along
5.According to the passage, the findings can__________.
A. increase insects in number B.instruct farmers when to spray
C. prevent climate warming D.help protect insects
高二英语阅读理解简单题查看答案及解析
As global warming increases, the Earth will become less and less suited to life, and many species will face ______.
A.extinction B.direction C.calculation D.application
高二英语单项填空中等难度题查看答案及解析
1. Very few people choose ideal and perfect jobs for themselves and they do not do the same job for the rest of their lives . With technology and everything else changing so fast , it’s ridiculous to expect to stay in one job from the time you leave school to the time you retire . Even staying in the same company can be a huge challenge . 2.
The first thing you should consider is what kinds of things you enjoy doing and what you are naturally good at . You have to look at practicality issues . You have to look at what you like to do and take a realistic look at whether the market is ever going to pay you an income for doing it .Your loving doing something doesn’t mean that the world is going to love giving you money for doing it . 3. And then narrow the list down by deciding which are at your level .
4. For example , if you want to be a doctor , you must graduate with all the papers saying you can be a doctor . The job requires a high education and an extreme amount of practice .
Many community colleges have tests that tell you what kinds of work you’d be happy to do .
5. For example , do you want to travel in your career or stay at home ? How much money do you want to make ? After you answer these questions , the computer will show you what careers you would be suited to . Keep in mind that what interests you at twenty isn’t likely to be the same as what interests you at forty . You would also find some tests online . These will you some ideas you have never consider .
A .What type of jobs are you interested in most ?
B .Then how will you choose your first career ?
C . However ,many companies will offer you job training before you start the work
D . Another thing to consider is how much education or special trainings required .
E . So pick a number of different things that you love at first .
F .They ask you a series of multiple-choice questions .
G. Most people’s jobs change at least once or twice in their lifetime .
高二英语其他题困难题查看答案及解析
The soldiers had just moved to the desert, and as they had never been in such a place before, they had a lot to learn.
As there were no trees or buildings in the desert, it was, of course, very hard to hide their trucks from enemy planes. The soldiers were, therefore, given training in camouflage. They were shown how to paint their trucks in irregular patterns with pale green, yellow, and brown paints, and then to cover them with nets to which they had tied small pieces of cloth.
The driver of the biggest truck had a lot of trouble camouflaging it. He spent several hours painting it, preparing a net and searching for some heavy rocks with which to hold the net down. When it was all finished, he went for lunch.
When he came back from his meal, he was surprised and worried to see that his camouflage was completely spoilt by the truck’s shadow, which was growing longer and longer as the afternoon advanced. He stood looking at it, not knowing what to do.
Soon an officer arrived, and he, too, saw the shadow, of course.
“Well,” he shouted to the poor driver, “What are you going to do about it? If an enemy plane comes over, the pilot will at once know that there is a truck there.”
“I know, sir,” answered the soldier.
“Well, don’t just stand there doing nothing!” said the officer.
“What shall I do, sir?” asked the poor driver.
“Get your spade and throw some sand over the shadow, of course!” answered the officer.
1.From this passage you can know ________.
A.there were a lot of trees where the soldiers were stationed |
B.the soldiers were staying in an area far from the enemy planes |
C.the soldiers knew nothing about desert |
D.the soldiers had lived in desert before |
2. Which of the following is right?
A.The nets with which they covered their trucks were made of small pieces of cloth. |
B.The soldiers tied small pieces of cloth to the nets with which they covered their trucks. |
C.The nets covering the trucks were painted pale green, yellow and brown. |
D.The trucks were tied to the nets with small pieces of cloth. |
3.The soldier was surprised and worried because ________.
A.his truck had cast a shadow in the sun and the enemy plane would find it. |
B.the shadow of his truck was growing longer at noon |
C.it was late in the afternoon, and he could not get rid of the shadow |
D.his newly-painted truck was in the shadow |
4. What do you think of the ending of the story?
A.It is quite reasonable that the officer ordered the soldier to cover the shadow with sand. |
B.We’ll laugh at the officer’s order because it is where the humor lies. |
C.Though the officer’s order sounded wise, the soldier couldn’t cover the shadow. |
D.The soldier managed to cover the shadow with sand |
5.What do you think of the ending of the story?
A.It is quite reasonable that the officer ordered the soldier to cover the shadow with sand. |
B.We’ll laugh at the officer’s order because it is where the humor lies. |
C.Though the officer’s order sounded wise, the soldier couldn’t cover the shadow. |
D.The soldier managed to cover the shadow with sand |
高二英语阅读理解简单题查看答案及解析
Just accept the disabled for who they are, and give them ________ to live as rich and full a life as you do.
A. earphone B. encouragement C. equipment D. exchange
高二英语单项填空简单题查看答案及解析
Butterflies are some of the most fascinating and beautiful insects in the world. Adult butterflies will live about 2 to 4 weeks. They use their senses of sight, touch, hearing, smell, and taste to survive in the world, find food and mates, lay eggs in an appropriate place, migrate, and avoid hungry enemies.
Butterflies have large compound eyes(复眼), which allow them to see in all directions without turning their heads. Like most insects, butterflies are very nearsighted, so they are more attracted to a sea of flowers than individual plants. Butterflies do not “see” colors such as red, green, and yellow, but they can sense sunlight, which indicates the direction the sun is shining, as well as ultraviolet light(紫外线), which is present on many flowers and guides butterflies to honey sources.
Butterflies have a very well-developed sense of smell, but it is not in their nose, since they don't have one. Sense receptors are located in their antennae(触角), feet, and many other parts of the body. They can help butterflies find their favorite flower honey food, and mates.
Butterflies' feet have sense organs that can taste the sugar in flower honey, letting the butterflies know if something is good to eat or not. Some females also carefully choose host plants by tasting to find appropriate places to lay their eggs. Adult butterflies feed their babies using a long tube. Butterflies force blood into the tube to straighten it out, allowing them to feed. Butterflies get all their food from this tube.
Butterflies don't have ears. Instead they “hear” sounds through their wings by sensing changes in sound vibrations(振动).
Butterflies may possess senses we don't even know about yet, because their body structure is very different from ours, and therefore difficult to understand, when observed through our own human senses.
1.What can we learn from the 2nd paragraph?
A. Butterflies have good eyesight.
B. Butterflies can see in all directions and don't need to turn heads.
C. Butterflies are sensitive to bright colors including red and yellow.
D. Butterflies cannot sense the ultraviolet light.
2.How do butterflies hear sounds?
A. Using their feet to sense the vibration of things
B. Using their ears to listen directly
C. Using their wings to sense the sound vibrations
D. Using their antennae to judge the sound
3.Why do female adult butterflies carefully choose the host plants?
A. To find high-qualified honey.
B. To have a good place for living.
C. To make it easier for them to hide from the enemies.
D. To find a proper place for their eggs.
4.What does the last paragraph imply?
A. There’s a long way to understand butterflies well
B. Butterflies give great help to human beings
C. Butterflies are the most beautiful insects in the world
D. Butterflies possess more senses than humans
5.The text mainly focuses on ________.
A. butterflies' living habits B. butterflies' beauty
C. butterflies' daily activities D. butterflies' senses
高二英语阅读理解中等难度题查看答案及解析
Butterflies are some of the most fascinating and beautiful insects in the world. Adult butterflies will live about 2 to 4 weeks. They use their senses of sight, touch, hearing, smell, and taste to survive in the world, find food and mates, lay eggs in an appropriate place, migrate, and avoid hungry enemies.
Butterflies have large compound eyes, which allow them to see in all directions without turning their heads. Like most insects, butterflies are very nearsighted, so they are more attracted to a sea of flowers than individual plants. Butterflies do not “see” colors such as red, green, and yellow, but they can sense sunlight, which indicates the direction the sun is shining, as well as ultraviolet light, which is present on many flowers and guides butterflies to honey sources.
Butterflies have a very well-developed sense of smell, but it is not in their nose, since they don't have one. Sense receptors are located in their antennae, feet, and many other parts of the body. They can help butterflies find their favorite flower honey food, and mates.
Butterflies' feet have sense organs that can taste the sugar in flower honey, letting the butterflies know if something is good to eat or not. Some females also carefully choose host plants by tasting to find appropriate places to lay their eggs. Adult butterflies feed their babies using a long tube. Butterflies force blood into the tube to straighten it out, allowing them to feed. Butterflies get all their food from this tube.
Butterflies don't have ears. Instead they “hear” sounds through their wings by sensing changes in sound vibrations.
Butterflies may possess senses we don't even know about yet, because their body structure is very different from ours, and therefore difficult to understand, when observed through our own human senses.
1.The text mainly focuses on ________.
A.butterflies' living habits B.butterflies' beauty
C.butterflies' senses D.butterflies' daily activities
2.What can we learn from the 2nd paragraph?
A.Butterflies can see in all directions and don't need to turn heads.
B.Butterflies have good eyesight.
C.Butterflies are sensitive to bright colors including red and yellow.
D.Butterflies cannot sense the ultraviolet light.
3.Why do female adult butterflies carefully choose the host plants?
A.To find highqualified honey.
B.To have a good place for living.
C.To make it easier for them to hide from the enemies.
D.To find a proper place for their eggs.
高二英语阅读理解中等难度题查看答案及解析
These fairy tales are as popular as before in that they _____ the common sense of justice and equality.
A. circulate B. observe C. satisfy D. deliver
高二英语单项填空中等难度题查看答案及解析
In the past industries had more freedom than they have now, and they did not need to be as careful as they must today. They did not need to worry a lot about the safety of the new products that they developed. They did not have to pay much attention to the health and safety of the people who worked for them. Often new products were dangerous for the people who used them; often conditions in the work place had very bad effects on the health of the workers.
Of course sometimes there were real disasters which attracted the attention of governments and which showed need for changes. Also scientists who were doing research into the health of workers sometimes produced information which governments could not ignore. At such times, there were inquiries into the causes of the disaster or the problems. New safety rules were often introduced as a result of these inquiries; however,the new rules came too late to protect the people who had died or become seriously ill.
Today many governments have special departments which protect customers and workers. In the U.S., for example, there is a department which tests new airplanes and gives warnings about possible problems. It also makes the rules that aircraft producers must follow. Another department controls the foods and drugs that companies sell. A third department looks at the places where people work, and then reports any companies that are breaking laws which protect the health and safety of workers.
1.
According to Paragraph 1, compared with today, industries in the past __________.
A. were controlled less strictly
B. were worse off
C. affected more peoples health
D. put out more unhealthy products.
2.
It is implied in Paragraph 2 that years ago governments __________.
A. paid much attention to the results of scientific discoveries
B. seldom introduced safety laws before disasters occurred
C. hardly ever looked into the causes of tragedies
D. imposed safety rules as soon as disasters occurred
3.
The main topic of the passage is __________.
A. industries in the past and at present
B. changes in the development of industries
C. the protection of industrial workers and customers
D. the freedom of industries
4.
The purpose of this passage is to __________.
A. inform B. criticize C. entertain D. persuade
高二英语阅读理解简单题查看答案及解析