Did you know that most humans are able to recognize about 1 million different colors? Well, some people can’t recognize this many because of something called colorblindness. If someone is colorblind, that means they can’t see as many colors as others – or, in rare cases, can’t see any colors at all.
Thankfully, special glasses have already been made to help fix some types of colorblindness. Now, according to new research published in Optics Letters, scientists have brought this solution one step further.
Sharon Karepov and Tal Ellenbogen, engineers from Tel Aviv University in Israel, have found a way to apply this technology to contact lenses. This new method is so groundbreaking because it can be customized to fix many different kinds of visual disadvantages.
People are able to see colors because of how the eye is structured. At the back of our eyes, there are three different kinds of cone-shaped (圆锥形的) cells that absorb light waves. When light waves are absorbed, the cells send a message to the brain for the image to be processed.
If something is wrong with these cone-shaped cells, this can cause problems when the brain processes the image. One of the most common types of colorblindness is red-green colorblindness. People who have this specific type of visual disadvantage have difficulty telling apart the colors red and green.
“Problems with distinguishing red from green interrupt simple daily routines such as deciding whether a banana is ripe,” Karepov explained.
Karepov also stressed the importance of applying this finding to create special contact lenses instead of relying on color-correcting glasses.
“Glasses based on this correction concept are commercially available, however, they are significantly heavier than contact lenses.” Karepov continued. “Our contact lenses … create a customized, simple and durable way to correct these disadvantages.”
1.Why is Sharon Karepov and Tal Ellenbogen’s finding groundbreaking?
A.They found an effective method to cure colorblindness.
B.They found what causes different kinds of visual disadvantages.
C.They developed special contact lenses to fix many visual disadvantages.
D.They developed glasses to fix all visual disadvantages.
2.What is the cause of colorblindness, according to the text?
A.Only one type of cone-shaped cell exists in the eyes.
B.Cone-shaped cells cannot process images received.
C.The brain fails to absorb light waves.
D.Cone-shaped cells in the eyes don’t work properly.
3.Why are the customized contact lenses better than special glasses, according to Karepov?
A.They are easier to make. B.They are cheaper.
C.They are simpler and more durable. D.They can help correct colorblindness.
4.Which of the following can be the best title?
A.Special Contact Lenses—Seeing the World’s Full Beauty
B.Glasses to Correct Colorblindness
C.Colorblindness Preventing People from Seeing Colors
D.Colorblindness—Something is Wrong with Cone-shaped Cells
高三英语阅读理解中等难度题
Did you know that most humans are able to recognize about 1 million different colors? Well, some people can’t recognize this many because of something called colorblindness. If someone is colorblind, that means they can’t see as many colors as others – or, in rare cases, can’t see any colors at all.
Thankfully, special glasses have already been made to help fix some types of colorblindness. Now, according to new research published in Optics Letters, scientists have brought this solution one step further.
Sharon Karepov and Tal Ellenbogen, engineers from Tel Aviv University in Israel, have found a way to apply this technology to contact lenses. This new method is so groundbreaking because it can be customized to fix many different kinds of visual disadvantages.
People are able to see colors because of how the eye is structured. At the back of our eyes, there are three different kinds of cone-shaped (圆锥形的) cells that absorb light waves. When light waves are absorbed, the cells send a message to the brain for the image to be processed.
If something is wrong with these cone-shaped cells, this can cause problems when the brain processes the image. One of the most common types of colorblindness is red-green colorblindness. People who have this specific type of visual disadvantage have difficulty telling apart the colors red and green.
“Problems with distinguishing red from green interrupt simple daily routines such as deciding whether a banana is ripe,” Karepov explained.
Karepov also stressed the importance of applying this finding to create special contact lenses instead of relying on color-correcting glasses.
“Glasses based on this correction concept are commercially available, however, they are significantly heavier than contact lenses.” Karepov continued. “Our contact lenses … create a customized, simple and durable way to correct these disadvantages.”
1.Why is Sharon Karepov and Tal Ellenbogen’s finding groundbreaking?
A.They found an effective method to cure colorblindness.
B.They found what causes different kinds of visual disadvantages.
C.They developed special contact lenses to fix many visual disadvantages.
D.They developed glasses to fix all visual disadvantages.
2.What is the cause of colorblindness, according to the text?
A.Only one type of cone-shaped cell exists in the eyes.
B.Cone-shaped cells cannot process images received.
C.The brain fails to absorb light waves.
D.Cone-shaped cells in the eyes don’t work properly.
3.Why are the customized contact lenses better than special glasses, according to Karepov?
A.They are easier to make. B.They are cheaper.
C.They are simpler and more durable. D.They can help correct colorblindness.
4.Which of the following can be the best title?
A.Special Contact Lenses—Seeing the World’s Full Beauty
B.Glasses to Correct Colorblindness
C.Colorblindness Preventing People from Seeing Colors
D.Colorblindness—Something is Wrong with Cone-shaped Cells
高三英语阅读理解中等难度题查看答案及解析
It is not until we know more about the situation ______ we are able to improve it.
A. that B．what C．when D．which
高三英语单项填空困难题查看答案及解析
We ______ that you would be able to visit us, but you did not.
A. hope B. hoped C. had hoped D. are hoping
高三英语单项填空中等难度题查看答案及解析
Most human beings are kind,good-natured beings who will hep someone out in need if they are able to,especially if that someone is a little kid.Travis Sattler is one of those human beings.
The 18-year-old didn't think twice about helping a little boy who walked up to the counter at Freddy's Frozen Custard where he'd been working for a year.The little boy named Johnny Smith had just finished eating with his mother when he walked up to the counter where Travis was working as the cashier(收银员）。He ordered an ice cream."Once I told him the total, he was counting his change and all of his money, and then he handed everything to me.But he didn't have enough money to pay for it. He was maybe $2 short,"Travis said.
But Travis wasn't about to let this boy walk out of the restaurant without his ice cream.So,he pulled out his credit card and told the boy to take the ice cream away."He had a big smile and the widest eyes when he ran back to his mom and told her what happened,"Travis said.
About 30 minutes later,the little boy walked up to Travis and handed him a note before walking out of the restaurant with his mom.It says,"Thank you for being so nice and paying for my ice cream.We need more people like you."The note also had a $100 bill folded in it.
＂I think I brightened up their day,"Travis said.And Travis's boss couldn't be more proud of him. He gave him an extra $100 bill as well and sent him some goodies.
1.How did Johnny feel when Travis paid for the ice cream?
A.Worried. B.Delighted.
C.Nervous. D.Confused.
2.Which of the following can best describe Travis?
A.Curious. B.Humorous.
C.Hard-working. D.Kind-hearted.
3.What can we learn from the text?
A.Johnny's mother couldn't afford the ice cream.
B.Travis has helped many people in the restaurant.
C.Travis Sattler's boss praised him for his behaviour.
D.Johnny's mother wrote to Travis and sent him a $2 bill.
4.What does the author want to show through Travis's story?
A.What goes around comes around.
B.Kindness does need to be rewarded.
C.A small act of kindness makes a big difference.
D.Happiness is more than the mere possession of money.
高三英语阅读理解中等难度题查看答案及解析
Being able to tell human faces apart is a skill that almost every person has, although some are far better at it than others. But a new study out from the journal Scientific Reports says that this is not just a skill that humans possess. Even fish can do it.
Following up on research studying different species’ abilities to recognize human faces (sheep, dogs, cows, horses, and-birds have all been tried), the researchers from the University of Oxford and the University of Queensland decided to pick an animal that does not have an evolved neocortex, the part of the brain that processes sight and sounds, and does not have a close relationship with humans. That way, there would be no reason why these test subjects would have a past history of identifying human faces. So they picked the archerfish, a reef fish variety that shoots water into the air to knock its prey out of the sky. They used this adaptation to have the fish spray water at a face on a monitor hanging over their tanks for a reward. Most of the fish were able to pick out their learned face, even when colors were taken away or methods were used to make the face shapes unclear.
This study gives more backing to the hypothesis that differentiating between faces is not just a skill that big -brained organisms are born with. It is possible that a good portion of recognizing faces is learned over time. The development of the neocortex may contribute only to quickly process a large number of faces in varying situations. But more work needs to be conducted to find a deeper link to this possible learned behavior. The sample size of this study was very small—only eight fish were used altogether. Also, the faces displayed on the monitor were only white, female faces from a German database, shown in a frontal view, with no expressions. Other animal trials have shown that some species, like pigeons, respond more to differing angles and varied expressions.
1.What is the purpose of this passage?
A.To improve a scientific experiment design. B.To present the differences between species.
C.To clarify how animals tell human faces apart. D.To show animals can recognize human faces.
2.Why were the archerfish chosen as test subjects?
A.They are cleverer than other species. B.They have sharp vision and hearing.
C.They aren’t closely related to humans. D.They have a past history of identifying human faces.
3.What is the author’s attitude toward the study?
A.Cautious. B.Negative.
C.Consistent. D.Sympathetic.
4.Which of the following is suggested for similar studies in the future?
A.Including more test subjects. B.Enlarging the human faces.
C.Employing more male researchers. D.Using black-and-white pictures.
高三英语阅读理解中等难度题查看答案及解析
Do you know how to deal with failure at school? Here are four steps that will help you get the most out of each failure,and move on.
1. When you feel bad after failing,talk with your parents or good friend,or any other adult.Then decide to take the responsibility to improve yourself.Read the teachers’ comments on your test carefully.
Ask yourself what you were trying to do and why you failed.2. Maybe you didn’t have all the information you needed; maybe you made a mistake or a poor decision.If so,give yourself a pat in the back.Fewer people ever get something right the first time they try it,and often it takes them many times.
3. Sometimes the failure isn’t because of something you did or didn’t do; it is someone else’s fault.But don’t spend time blaming them; instead,move on toward your goals.
Don’t give up easily.4. There is a difference between making a decision and giving up.Deciding to follow a better way is one thing; simply walking away means you really have failed.
Keep trying again.Successful people are different because they choose their next steps instead of just reacting to feelings.If a goal is still important to you,figure out what to do and go after it again.5.
A.No pains,no gains.
B.Failure is unavoidable.
C.If it isn’t,do your best on something else.
D.Remove you bad feelings.
E.Actually it was because you were very lazy.
F.Review the situation to see what your choices are.
G.Usually it was because you were trying out a new skill or learning a new subject.
高三英语七选五困难题查看答案及解析
Did you know that there are actually people who have paid for a flight to the moon? In the future, there will be a lot more opportunities to travel to faraway places than now… perhaps even as far as the moon. As people adventure further and further away and as planes, trains, cars, and rocket ships become faster, is it safer to have these vehicles controlled by humans or by computers?
While many flights by plane are controlled automatically by machines, most people today wouldn’t let their car drive itself. That’s because currently the autopilot function on your car can only keep it on the same course you are travelling on. It won’t turn the car right or left. It won’t stop if an animal jumps in the way. However, cars today can sense when something is too close and warn the driver with flashing lights and alarms. Many cars also have GPS（global positioning systems） that tell drivers which road to take and when to turn. These systems, unlike human drivers, never get lost. In the future, it is easy to believe that your car will be better able to drive itself with the aid of computers that can determine the position of your car and the speed it should travel at.
In addition to computers being ‘smarter’ than people regarding the best way to go or knowing how close another vehicle is, computers don’t get sick, tired, or angry. This means they won’t make the same mistakes that people make when they are not having a good day. While responding with emotion is a good thing when choosing the best way to deal with a friend’s personal problem, it may not be such a good thing when deciding what to do at the wheel of a fast-moving vehicle.
So what are the disadvantages of autopilot systems? Maybe one disadvantage is that a small computer problem could cause a serious accident. It could also be argued that in unexpected situations, computers might not be able to respond appropriately; some decisions require human emotions. Another problem might be that if everything were controlled by computers or robots, people wouldn’t have any jobs.
1.What is the best title for the passage?
A. The Development of Autopilot
B. Technology of Future Travel
C. A New Driving System
D. Computerized Cars
2.Which of the following is the disadvantage of an autopilot system?
A. It won’t make the same mistakes as people do.
B. It can point out the best route for the driver.
C. It might not respond properly to unexpected situations.
D. It does not have human emotions to influence its function.
3.If some falling rocks roll down toward your car, the autopilot on your car will_______.
A. inform you of the danger
B. turn the car right or left
C. do nothing about it
D. stop the car
4.What’s the author’s attitude towards the autopilot?
A. Approving. B. Objective. C. Negative. D. Doubtful.
高三英语阅读理解中等难度题查看答案及解析
Faces, like fingerprints, are unique. Did you ever wonder how it is possible for us to recognize people? ___1.____. Yet a very young child – or even an animal, such as a pigeon , can learn to recognize faces. We all take this for granted.
___2.____. When we talk about someone’s personality, we mean the ways in which he or she acts, speaks, thinks and feels that make that individual different from others.
Like the human face, human personality is very complex. But describing someone’s personality in words is somewhat easier than describing his face. ____3.____. But if you were asked to describe a “nice person”, you might begin to think about someone who was kind, considerate, friendly, warm, and so forth.
There are many words to describe how a person thinks, feels and acts. Gordon Airport, an American psychologist, found nearly 18,000 English words characterizing differences in people’s behavior. _ _4.___. Bookworms, conservatives, military types – people are described with such terms.
People have always tried to “type” each other. Actors in early Greek drama wore masks to show the audience whether they played the villain’s or the hero’s role. In fact, the words “person” and “personality” come from the Latin persona, meaning “mask”. Today, most television and movie actors do not wear masks. __5.____.
A. If you were asked to describe what a “nice face” look like, you probably would have a difficult time doing so.
B. But we can easily tell the “good guys” from the “bad guys” because the two types differ in appearance as well as in actions.
C. We also tell people apart by how they behave.
D. People have difficulty in describing the features of fingerprints.
E. And many of us use this information as a basis for describing, or typing one`s personality.
F. Experts say that actors differ in their behavioral and physical characteristics in acting.
G. Even a skilled writer probably could not describe all the features that make one face different from another.
高三英语其他题困难题查看答案及解析
We all know that "Chances favor the prepared mind"． Only if you are well prepared, will you be able to seize them.
注意： 1．无须写标题，不得照抄英语提示语。
2．除诗歌外，文体不限。
3．文中不得透露个人姓名和学习名称。
4．词数不少于120词。
高三英语书面表达中等难度题查看答案及解析
Compassion and love are concepts that are often thought to be felt by humans only. As the most intelligent creatures to ever walk the earth, we tend to assume that we are the only ones who can feel emotions. We forget that the speechless beings who live here with us - animals - also have the same capability.
During a cold night in Ontario, Canada, a passer-by spotted something on the side of the road that made her stop -a shaking dog curled up in the snow.
When she approached the pup, she discovered that she wasn’t alone-she was cuddling five orphaned black kittens to keep them warm.
The dog surely could have found a safer place to stay for the night, but she chose instead to help not just herself but other stray animals as well.
The Good Samaritan called Pet and Wildlife Rescue and an animal control officer picked them up. When they got to the shelter, it was apparent that a close bond had already been formed between the dog and the orphaned kittens. The staff decided to name the kind dog Serenity in honor of her selfless act.
“It’s truly heartwarming!” a shelter spokesperson told The Dodo. “It had been a very cold night so these kittens would have had a very hard time surviving.”
Aside from requiring treatment for worm and flea infections, the orphaned kittens are now safe. Just like a proud and doting mother, Serenity insisted on checking on her babies regularly to oversee their progress.
The good news is that the kittens are now living with a foster family who will care for them until they are old enough to be adopted. Serenity, on the other hand, is still looking for a family.
According to the shelter, she loves zooming around in the yard and is big on playing. She is also quite jumpy, so she would do best in a home without small children.
1.What did the passer-by see on the road?
A.A dog curled up in the snow.
B.Five kittens were in the snow alone.
C.A dog was warming five kittens in the snow.
D.A dog found a safe place to stay for the night.
2.What does the underlined word “she” in paragraph 3 refer to?
A.The passer-by. B.The dog.
C.The kitten. D.The spokesperson.
3.Where is the dog Serenity now?
A.Living in the shelter. B.Being adopted by a family.
C.Staying with the kittens. D.Playing with some children.
4.What can we draw from the story?
A.Animals and humans should live in harmony.
B.A sad end can be turned into a positive one.
C.Animals have the same capability with humans.
D.Animals can feel compassion and love like humans.
高三英语阅读理解中等难度题查看答案及解析