PITTSBURGH — For most people, snakes seem unp...

PITTSBURGH — For most people, snakes seem unpleasant or even threatening. But Howie Choset sees in their delicate movements a way to save lives.

The 37-year-old Carnegie Mellon University professor has spent years developing snake-like robots he hopes will eventually slide through fallen buildings in search of victims trapped after natural disasters or other emergencies.

Dan Kara is president of Robotics Trends, a Northboro, mass-based company that publishes an online industry magazine and runs robotics trade shows. He said there are other snake-like robots being developed, mainly at universities, but didn't know of one that could climb pipes.

The Carnegie Mellon machines are designed to carry cameras and electronic sensors and can be controlled with a joystick (操纵杆). They move smoothly with the help of small electric motors, or servos, commonly used by hobbyists in model airplanes.

Built from lightweight materials, the robots are about the size of a human arm or smaller. They can sense which way is up, but are only as good as their human operators, Choset added.

Sam Stover, a search term manager with the Federal Emergency Management Agency based in Indiana, said snake-type robots would offer greater mobility than equipment currently available, such as cameras attached to extendable roles.

"It just allows us to do something we've not been able to do before," Stover said, "We needed them yesterday."

He said sniffer dogs are still the best search tool for rescue workers, but that they can only be used effectively when workers have access to damaged building.

Stover, among the rescue workers who handled the aftermath (后果) of Hurricane Katrina, said snake robots would have helped rescuers search flooded houses in that disaster.

Choset said the robots may not be ready for use for another five to ten years, depending on funding.

1.Which institution is responsible for the development of Choset's robots?

A.Robotics Trends. B.Pittsburgh City Council.

C.Carnegie Mellon University. D.Federal Emergency Management Agency.

2.Choset believes that his invention _________.

A.can be attached to an electronic arm

B.can be used by hobbyists in model airplanes

C.can find victims more quickly than a sniffer dog

D.can sense its way as well as its operators

3.By saying "We needed them yesterday" (paragraph 7), Stover means that snake-like robots ________.

A.could help handle the aftermath of Hurricane Katrina

B.should have been put to use in past rescue work

C.helped rescuers search flooded houses yesterday

D.were in greater need yesterday than today

4.What is the text mainly about?

A.Snake-like robots used in industries.

B.Snake-like robots made to aid in rescues.

C.The development of snake-like robots.

D.The working principles of snake-like robots.

高三英语阅读理解中等难度题查看答案及解析

PITTSBURGH – For most people, snakes seem unpleasant or even threatening. But Howie Choset sees in their delicate movements a way to save lives.

The 37-year-old Carnegie Mellon University professor has spent years developing snake-like robots， he hopes will eventually slide through fallen buildings in search of victims trapped after natural disasters or other emergencies.

Dan Kara is president of Robotics Trends, a Northboro, Mass.-based company that publishes an online industry magazine and runs robotics trade shows. He said there are other snake-like robots being developed, mainly at universities, but didn’t know of one that could climb pipes.

The Carnegie Mellon machines are designed to carry cameras and electronic sensors and can be controlled with a joystick(操纵杆). They move smoothly with the help of small electric motors, or servos, commonly used by hobbyists in model airplanes.

Built from lightweight materials, the robots are about the size of a human arm or smaller.They can sense which way is up, but are only as good as their human operators, Choset added.

Sam Stover, a search term manager with the Federal Emergency Management Agency based in Indiana, said snake-type robots would offer greater mobility than equipment currently available, such as cameras attached to extendable roles.

“It just allows us to do something we’ve ot been able to do before,”Stover said, “We needed them yesterday.”

He said sniffer dogs are still the best search tool for rescue workers, but that they can only be used effectively when workers have access to damaged building.

Stover, among the rescue workers who handled the aftermath (后果) of Hurricane Katrina, said snake robots would have helped rescuers search flooded houses in that disaster.

Choset said the robots may not be ready for use for another five to ten years, depending on funding.

1.Which institution is responsible for the development of Choset’s robots?

A. Robotics Trends.        　　　B. Pittsburgh City Council.

C. Carnegie Mellon University.      D. Federal Emergency Management Agency.

2.Choset believes that his invention ______.

A. can be attached to an electronic arm

B. can be used by hobbyists in model airplanes

C. can find victims more quickly than a sniffer dog

D. can sense its way no better than its operators

3.By saying “We needed them yesterday” (paragraph 7), Stover means that snake-like robots _____.

A. could help handle the aftermath of Hurricane Katrina

B. would have been put to use in past rescue work

C. helped rescuers search flooded houses yesterday

D. were in greater need yesterday than today

4.What is the text mainly about?

A. Snake-like robots used in industries.

B. Snake-like robots made to aid in rescues.

C. The development of snake-like robots.

D. The working principles of snake-like robots.

高三英语阅读理解中等难度题查看答案及解析

Is it necessary to learn when we are 50s, 60s or even 70s?Most people consider when they get retired, they are supposed to be completely laidback, do something fun, or hang around.1. It’s particularly important to the elderly.

Through learning, we know how to think, how to memorize, how to ask questions and even how to interact with others. According to a study, while we are learning, “the brain creates neural(神经)pathways” that make us smarter. 2. The more we learn, the mote new  neural pathways develop in our brains.

When it comes to learning, it doesn’t mean we must load ourselves with lots of knowledge. What we need to do is just learn something we like day in and day out. 3. Everyone learns from bottom to up. If we have an interest to learn, that desire will naturally push us to move forward.

As we feel worn out from learning, don’t be discouraged.4. An old saying goes, “Birds of a feather fly together.” As long as we have partners to learn all together, our learning excitement will come alive again. On the contrary, if we don’t learn, and choose to distance ourselves from other, we might be getting dumb, and slow; eventually, we lose energy, and life passion. Instead of being bored, dumb, why don’t we keep learning?

5. More importantly, learning explores our life horizon, helps us build up our confidence; gradually, it leads us to a way of finding a sense of value and ach.

A. It’s never too old to learn.

B. Don’t worry if we cannot learn well.

C. You should set a high learning target.

D. Learning makes us understand how potential we are.

E. Look for a partner who has the same common interest as you do.

F. In other words, our brains are active as we learn something new.

G. However, the truth is that learning makes us energetic, and self-fulfilled.

高三英语七选五中等难度题查看答案及解析

In France, most of the people want to have a very long time for lunch. In Britain it doesn’t seem to be important 31             people take a cup of tea and a very quick sandwich and it’s OK.

Another very 32           (surprise) thing for the foreigner is the way the people obey the law — you seem to have much more discipline 33          in France, and you respect the police 34           more than we do. For instance, people park their car 35         , and they know it is forbidden 36            they do it — in Britain people don’t do that.

In England, it’s 37          (easy) to feel alone. People don’t bother you, don’t look after you or worry 38          you so much, so it’s easy to get lost or to hide away here. When you’re in the United States people want to know 39____________     you are, they tend to speak to you, to find out who you are,40         you’re doing.

高三英语填空题简单题查看答案及解析

阅读下面材料，在空白处填入适当的内容或空号内单词的正确形式。

Many weight loss programs seem attractive to people. But for most people 1. 　　　　 are overweight, the results are so2. 　　　　 (limit) that they will give up long before achieving any realistic results. It turns out that the programs are practically of no use. You lose weight for a while, only 3. 　　　　 (gain) back more weight when you stop your weight loss program. This is4. 　　　　 such programs are not natural. Is there a natural weight loss solution?

A sure way of achieving natural weight loss is to increase5. 　　　　 amount of exercise you get every day. 6. 　　　　 , this doesn’t necessarily mean spending hours at the gym 7. 　　　　 in front of a weight loss video. Increase your weight levels8. 　　　　 (nature) by walking or biking short distances instead of driving, or by taking the stairs instead of the elevator. There are even exercise that you can do while 9. 　　　　 (sit) at your desk. All of these activities can burn extra calories 10. 　　　　 taking up too much time.

高三英语语法填空中等难度题查看答案及解析

Going green seems to be a fad(时尚) for a lot of people these days. Whether that is good or bad, we can’t really say, but for the two of us, going green is not a fad but a lifestyle.

On April 22,2012, we decided to go green every single day for an entire year. This meant doing 365 different green things, and It also meant challenging ourselves to go green beyond the easy things. Rather than recycle and reduce our energy, we had to think of 365 different green things to do and this was no easy task.

With the idea of going green every single day for a year, Our Green Year started. My wife and I decided to educate people about how they could go green in their lives and hoped we could show people all the green things that could be done to help the environment. We wanted to push the message that every little bit helps.

Over the course of Our Green Year, we completely changed our lifestyles. We now shop at organic(有机的) stores. We consume less meat, choosing green food. We have greatly reduced our buying we don’t need. We have given away half of what we owned through websites. Our home is kept clean by vinegar and lemon juice, with no chemical cleaners. We make our own butter, enjoying the smell of home-made fresh bread. In our home office anyone caught doing something ungreen might be punished.

Our minds have been changed by Our Green Year. We are grateful for the chance to have been able to go green and educate others. We believe that we do have the power to change things and help our planet.

1.What might be the best title for the passage?

A. Going Green　　　　　　　　　　 B. Protecting the Planet

C. Keeping Open-Minded　　　　 D. Celebrating Our Green Year

2.It was difficult for the couple to live a green life for the whole year because 　　　　 .

A. they were expected to follow the green fad

B. they didn’t know how to educate other people

C. they were unwilling to reduce their energy

D. they needed to perform unusual green tasks

3.What did the couple do over the course of Our Green Year?

A. They tried to get out of their ungreen habits.

B. They ignored others’ ungreen behavior.

C. They chose better chemical cleaners.

D. They sold their home-made food.

4.What can we infer from the last paragraph?

A. The government will give support to the green project.

B. The couple may continue their project in the future.

C. Some people disagree with the couple’s green ideas.

D. Our Green Year is becoming a national campaign.

高三英语阅读理解中等难度题查看答案及解析

Going green seems to be a fad(时尚) for a lot of people these days.Whether that is good or bad,we can’t really say, but for the two of us, going green is not a fad but a life style.

On April 22,2011,we decided to be green every single day for an entire year. This meant doing 365 different things, and it also meant challenging ourselves to go green beyond the easy things. Rather than recycle and reduce our energy, we had to think of 365 diffenent things to do and this was no easy task.

With the idea of going green every single day a year,Our Greean Year started. My wife and I decided to educate people about how they could go green in their lives and hoped we could show people all green things that could be done to help the environment. We wanted to push the message that every little bit helps.

Over the course of Our Green Year, we completely changed our lifestyles. We now shop at organic(有机的) stores. We consume less meat,choosing green food. We have greatly reduced our buying we don’t need. We have given away half of what we owned through websites.Our home is kept clean by vinegar and lemon juice, with no chemical cleaners. We make our own butter, enjoying the smell of home-made fresh bread. In our home office anyone caught doing something ungreen might be punished.

Our minds have been changed by Our Green Year. We are grateful for the chance to have been able to go green and educate others. We believe that we do have the power to change things and help our planets.

1.What might be the best title for the passage?

A．Going green

B．Protecting the planet

C．Keeping Open-Minded

D．Celebrating Our Green Year

2.It was difficult for the couple to live a green life for the whole year because_______.

A．they were expected to follow the green fad

B．they didn’t know how to educate other people

C．they were unwilling to reduce their energy

D．they needed to perform unusual green tasks

3.What did the couple do over the course of Our Green Year?

A．They tried to get out of their ungreen habits.

B．They ignored others’ ungreen behaviour.

C．They chose better chemical cleaners.

D．they sold their home-made food

4.What can we infer from the last paragraph?

A．The government will give support to the green roject.

B．The couple may continue ther project in the future.

C．Some people disagree with the couple’s green ideas.

D．Our Green Year is becoming a national campaign.

高三英语阅读理解中等难度题查看答案及解析

Going green seems to be fad(时尚)for a lot of people these days. Whether that is good or bad, we can’t really say, but for the two of us, going green is not a fad but a lifestyle.

On April 22, 2011, we decided to go green every single day for an entire year. This meant doing 365 different green things, and it also meant challenging ourselves to go green beyond easy things. Rather than recycle and reduce our energy, we had to think of 365 different green things to do and this was no easy task.

With the idea of going green every single day for a year, Our Green Year started. My life and I decided to educate people about how they could go green in their lives and hoped we could show people all the green things that could be done to help the environment. We wanted to push the message that every little bit helps.

Over the course of Our Green Year, we completely changed our lifestyle. We now shop at organic(有机的)stores. We consume less meat, choosing green food. We have greatly reduced our buying we don’t need. We have given away half of what we owned through websites. Our home is kept clean by vinegar and lemon juice, with no chemical cleaners. We make our own butter, enjoying the smell of home-made fresh bread. In our home office anyone caught doing something ungreen might be punished.

Our minds have been changed by Our Green Year. We are grateful for the chance to have been able to go green and educate others. We believe that we do have the power to change things and help our planet.

1.What might be the best title for the passage?

A. Going Green.

B. Protecting the Planet.

C. Keeping Open-Minded

D. Celebrating Our Green Year.

2.It was difficult for the couple to live a green life for the whole year because_________.

A. they were expected to follow the green fad

B. they didn’t know how to educate other people

C. they were unwilling to reduce their energy

D. they needed to perform unusual green tasks

3.What did the couple do over the course of Our Green Year?

A. They tried to get out of their ungreen habits.

B. They ignore others’ ungreen behavior.

C. They chose better chemical cleaners.

D. They sold their home-made food.

4.What can we infer form the last paragraph?

A. The government will give support to the green people.

B. The couple may continue their project in the future.

C. Some people disagree with the couple’s green ideas.

D. Our Green Year is becoming a national campaign.

高三英语阅读理解中等难度题查看答案及解析

Going green seems to be fad(时尚)for a lot of people these days. Whether that is good or bad, we can’t really say, but for the two of us, going green is not a fad but a lifestyle.

On April 22, 2011, we decided to go green every single day for an entire year. This meant doing 365 different green things, and it also meant challenging ourselves to go green beyond easy things. Rather than recycle and reduce our energy, we had to think of 365 different green things to do and this was no easy task.

With the idea of going green every single day for a year, Our Green Year started. My life and I decided to educate people about how they could go green in their lives and hoped we could show people all the green things that could be done to help the environment. We wanted to push the message that every little bit helps.

Over the course of Our Green Year, we completely changed our lifestyle. We now shop at organic(有机的)stores. We consume less meat, choosing green food. We have greatly reduced our buying we don’t need. We have given away half of what we owned through websites. Our home is kept clean by vinegar and lemon juice, with no chemical cleaners. We make our own butter, enjoying the smell of home-made fresh bread. In our home office anyone caught doing something ungreen might be punished.

Our minds have been changed by Our Green Year. We are grateful for the chance to have been able to go green and educate others. We believe that we do have the power to change things and help our planet.

1.What might be the best title for the passage?

A. Going Green.　　　　 　　　 B. Protecting the Planet.

C. Keeping Open-Minded　　 D. Celebrating Our Green Year.

2.It was difficult for the couple to live a green life for the whole year because_________.

A. they were expected to follow the green fad

B. they didn’t know how to educate other people

C. they were unwilling to reduce their energy

D. they needed to perform unusual green tasks

3.What did the couple do over the course of Our Green Year?

A. They tried to get out of their ungreen habits.

B. They ignore others’ ungreen behavior.

C. They chose better chemical cleaners.

D. They sold their home-made food.

4.What can we infer form the last paragraph?

A. The government will give support to the green people.

B. The couple may continue their project in the future.

C. Some people disagree with the couple’s green ideas.

D. Our Green Year is becoming a national campaign.

高三英语阅读理解中等难度题查看答案及解析

Going green seems to be fad(时尚)for a lot of people these days. Whether that is good or bad, we can’t really say, but for the tow of us, going green is not a fad but a lifestyle.

On April22, 2011, we decided to go green every single day for an entire year. This meant doing 365 different green things, and it also meant challenging ourselves to go green beyond easy things. Rather than recycle and reduce our energy, we had to think of 365 different green things to do and this was no easy task.

With the idea of going green every single day for a year, Our Green Year started. My wife and I decided to educate people about how they could go green in their lives and hoped we could show people all the green things that could be done to help the environment. We wanted to push the message that every little bit helps.

Over the course of Our Green Year, we completely changed our lifestyle. We now shop at organic(有机的)stores. We consume less meat, choosing green food. We have greatly reduced our buying we don’t need. We have given away half of what we owned through websites. Our home is kept clean by vinegar and lemon juice, with no chemical cleaners. We make our own butter, enjoying the smell of home-made fresh bread. In our home office anyone caught doing something ungreen might be punished.

Our minds have been changed by Our Green Year. We are grateful for the chance to have been able to go green and educate others. We believe that we do have the power to change things and help our planet.

1.What might be the best title for the passage?

A. Going Green.                                                        B. Protecting the Planet.

C. Keeping Open-Minded                             D. Celebrating Our Green Year.

2.It was difficult for the couple to live a green life for the whole year because_________.

A. they were expected to follow the green fad

B. they didn’t know how to educate other people

C. they were unwilling to reduce their energy

D. they needed to perform unusual green tasks

3.What did the couple do over the course of Our Green Year?

A. They tried to get out of their ungreen habits.

B. They ignore others’ ungreen behavior.

C. They chose better chemical cleaners.

D. They sold their home-made food.

4.What can we infer form the last paragraph?

A. The government will give support to the green people.

B. The couple may continue their project in the future.

C. Some people disagree with the couple’s green ideas.

D. Our Green Year is becoming a national campaign.

高三英语阅读理解中等难度题查看答案及解析