When we see well, we do not think about our e...

When we see well, we do not think about our eyes very often. It is only when we cannot see perfectly that we realize how important our eyes are.

People who are near-sighted can only see things that are very close to their eyes. Everything else seems ­­blurry. Many people who do a lot of work, such as writing, reading and sewing become near-sighted. People who are far-sighted suffer from just the opposite problem. They can see things that are far away, but they have difficulty in reading a book unless they hold it at arm’s length. If they want to do much reading, they must get glasses, too.

Other people do not see clearly because their eyes are not exactly the right shape. They have what is called astigmatism (散光). This, too, can be corrected by glasses. Some people’s eyes become cloudy because of cataracts (白内障). Long ago these people often became blind. Now, however, it is possible to operate on the cataracts and remove them.

Having two good eyes is important for judging distances. Each eye sees things from a slightly different angle. To prove this to yourself, look at an object out of one eye; then look at the same object out of your other eye. You will find the object’s relation to the background and other things around it has changed. The difference between these two different eye views helps us to judge how far away an object is. People who have only one eye cannot judge distances as people with two eyes.

1.We should take good care of our eyes　　 .

A.only when we can see well

B.only when we cannot see perfectly

C.even if we can see well

D.only when we realize how important our eyes are

2.The underlined word blurry in the second paragraph probably means　　 .

A.obvious B.possible C.clear D.unclear

3.Having two eyes instead of one is particularly useful for　　 .

A.seeing at night

B.seeing objects far away

C.looking over a wide area

D.judging distances

4.People who suffer from astigmatism have　　 .

A.one eye bigger than the other

B.eyes that are not exactly the right shape

C.a difficulty that can be corrected by an operation

D.an eye difficulty that cannot be corrected by glasses

高二英语阅读理解中等难度题查看答案及解析

When we can see well, we do not think about our eyes often. It is only when we can not see perfectly that we come to see how important our eyes are.

People who are nearsighted can only see things that are very close to their eyes. Many people who do a lot of close work, such as writing and reading, become nearsighted. Then they have to wear glasses in order to see distant things clearly.

People who are farsighted face just the opposite problem. They can see things that are far away, but they have difficulty reading a book unless they hold it at arm’s length. If they want to do much reading, they must get glasses too.

Other people do not see clearly because their eyes are not exactly the right shape. This, too, can be corrected by glasses. Some people’s eyes become cloudy because of cataracts（白内障）. Long ago these people often became blind. Now, however, it is possible to operate on the cataracts and remove them.

When night falls, colors become fainter（不清楚） to the eyes and finally disappear. After your eyes have grown used to the dark, you can see better if you use the side of your eyes rather than the centers. Sometimes, after dark, you see a small thing to one side of you, which seems to disappear if you turn your head in its direction. This is because when you turn your head, you are looking at the thing too directly. Men on guard duty sometimes think they see something moving to one side of them. When they turn to look straight at it, they can not see it any more, and they believe they were mistaken. However, this mistake happens because the center of the eye, which is very sensitive in daylight, is not as sensitive as the sides of the eye after dark.

1.We don’t know that our eyes are of great importance until ________.

A. we think about our eyes           B. we cannot see clearly

C. we wear glasses                 D. we have to do much reading

2.According to the passage, a ________ is more likely to be nearsighted.

A. student    B. runner    C. guard    D. worker

3. People who are farsighted ________ .

A. cannot do a lot of close work without glasses

B. can only see things that are very close to their eyes

C. have difficulty reading a book if they hold it at arm’s length

D. have the same problem as the nearsighted people

4. To see a small thing at night, it is better to look ________ .

A. with wide open eyes             B. with half shut or narrowed eyes

C. straight at it                    D. in a slightly different direction

高二英语阅读理解简单题查看答案及解析

When we talk about positive thinking, we often use terms having to do with our hearts — open heart, pure heart or joyful heart. But new research from Duke University is making a closer connection, finding that a positive attitude may be helpful to people who have angina (心绞痛)，a common heart condition.

Symptoms of this condition include chest pain or pressure because the heart is not receiving sufficient oxygen. Patients who displayed optimistic thought patterns, including having positive expectations about recovery, were 40 percent less likely to be hospitalized or require surgery than those who were not optimistic, according to the study. The researchers collected data from 2,400 patients who had diagnoses of angina.

An interesting additional finding from the patients' questionnaires was that the most optimistic patients were also the least likely to have histories of heart attack, heart failure or heart disease.

The researchers did not declare a causal relationship between positive thinking and better heart disease outcomes, however. There are multiple possible reasons for the results of the study, including the idea that patients who are healthier to begin with are more likely to expect to recover and regain good health.

But the study does represent a new way of looking at the situation. Now, in addition to a body of research that examines the relationship between depression and heart health, there is a new way of inquiry that asks whether positive thinking could be used as a strategy to improve outcomes.

Lead researcher Alexander Fanaroff, a fellow in the department of cardiology (心脏病学) at the Duke University Medical Center, told the Duke Chronicle that his next research question will find ways to improve attitudes among heart patients.

Perhaps his subjects could reflect on the word of the writer Anthony J. D'Angelo: "Smile, it is the key that fits the lock of everybody's heart."

1.How can people with angina get better according to the study?

A.By expecting more. B.By thinking positively.

C.By getting timely surgery. D.By taking more exercise.

2.What may be Alexander Fanaroff’s next research?

A.To explore how to improve patients’ attitudes.

B.To find out the ways to treat heart patients.

C.To learn the causes of heart diseases.

D.To test if positive attitudes help with health.

3.What can we learn from the text?

A.Optimistic people hardly get heart attack.

B.People's attitudes decide their overall health.

C.How positive thinking benefits heart health is unclear.

D.The reason why patients recover well is that they have no depression.

4.What may be the best title for the text?

A.Keep positive to get rid of illness

B.Angina, a kind of serious condition

C.Depression, a key cause of heart attack

D.Positive thinking makes hearts healthier

高二英语阅读理解中等难度题查看答案及解析

When we see a person in deep sorrow， our immediate reaction is to lend a hand． Not to do so would be a moral failure． But what if we see an animal in deep sorrow， does the same logic apply？

This question was raised following the "rescue" of a group of penguins from an icy gully in Antarctica． It was filmed for the BBC wildlife series Dynasties．

The film crew was alarmed when they saw that a group of penguins had fallen into a gully and been trapped with their young． The crew dug a shallow ramp so that a few of the penguins could save themselves．

The case has taken the international media by storm． Viewers watching this episode let out a sigh of relief on social media． "I'm so glad． I understand not getting directly involved， but a helping hand isn't intervening right？" viewer Kathryn Shaw tweeted．

However， others think that human intervention is unnatural． It's an unwritten rule among documentary filmmakers that they are there to observe， not to intervene， according to CBS News． For example， in another episode of Dynasties， David the chimpanzee， was left to die after he was filmed being beaten up by other chimps．

"Tragedy is a part of life． You can't have sunshine throughout your life． To have done anything else would only make matters worse and distort （扭曲）the truth，" said the show's creator David Attenborough，according to The Times．

In this case， however， Mike Gunton， the executive producer of the series， said that this was a one-off situation． "There were no animals going to suffer by intervening． It wasn't dangerous． You weren't touching the animals and it was just felt by doing this…they had the opportunity to not have to keep slipping down the slope，" he told the BBC．

Such cases are familiar to Paul Nicklen， wildlife photographer for National Geographic．

"I have a practical view when it comes to the natural rhythm （节律）of life，" he told Metro． "If it's ever a dangerous situation， no matter how gut-wrenching， you stay out of the way． Even when you are watching a male polar bear eat the young．"

But he said that he would help animals if he saw no real gain or disruption （扰乱） to the ecosystem．

Indeed， there will always be two sides to the coin， and human beings will forever be conflicted in such circumstances． "There's no rule book in those situations． You can only respond to the facts that are right there in front of you，" Will Lawson， the show's director， told Daily Mail．

1.The case has taken the international media by storm because ______ ．

A. people all over the world prefer documentaries of Antarctica

B. people were very curious about how the penguins died

C. what the film crew did upset people all over the world

D. it has caused a heated discussion on human intervention in wildlife

2.The underlined word "gut-wrenching" in Paragraph 9 probably means ______ ．

A. highly embarrassing B. slightly worrying

C. very comforting D. extremely upsetting

3.From this essay， we can learn that human intervention ______ ．

A. is a topic rarely mentioned by international media

B. once resulted in chimpanzee's death directly

C. is usually not expected in making documentary films

D. surely breaks the natural rhythm of life

高二英语阅读理解中等难度题查看答案及解析

. It is only when we cannot see clearly _____ we come to see ______ important our eyes are.

高二英语单项填空简单题查看答案及解析

It is only when we cannot see clearly _____ we come to see ______ important our eyes are.

A. that; what               B. which; what             C. that; how                 D. which; how

高二英语单项填空困难题查看答案及解析

1.The painter does not ___________ (试图) to paint objects as we see them with our eyes.

2.All his_____________ (财产) were lost in the earthquake.

3.It will _____________ (吸引) to those who love Impressionist and Post-Impressionist paintings.

4._____________ (灵活的) schedules work well for many people’s lifestyles.

5.I have offered to paint the house in _____________ (交换) for a week’s accommodation.

6.The race organizers are trying to attract _____________ (赞助人).

7.We forgave his bad temper because we knew that his son’s illness had put him under great __________ (压力).

8.Jack has been _____________ (禁止) from driving for a year.

9.When I was young, I didn’t know much about the harmful ____________ (影响) of smoking on people.

10.She was ____________ (感到惭愧的) of having lied to her mother.

高二英语单词拼写中等难度题查看答案及解析

When we think about giving help to developing countries, we often think about giving money so that these countries can build schools and hospitals, buy food and medicine, or find clean water supplies. These seem to be the most important basic needs of the people we are trying to help. However, it's far from enough. Ladies and gentlemen, we've got to come up with some better ideas to help them.

I was very surprised, then, when I read about a plan to make cheap laptop computers for children in developing countries. A man called Nicholas Negroponte invented a cheap laptop computer and he planed to produce a lot and sell them to the children in developing countries at a low price after he visited a school in Cambodia. The laptop will be covered in rubber so that it is very strong and won't be damaged easily. The idea is that these computers will help the children's education as they will be able to surf the Internet. By improving children's education they should help people to find their own solutions to their problems in the long term.

Another idea to help children in developing countries is to recycle old mobile phones so that they can be used again. In the UK, and probably in many other countries too, millions of mobile phones are thrown away every year. The waste created by throwing away these old phones is very bad for the environment, so it seems to be an excellent idea to recycle them. In this way we will be able to achieve two important goals at the same time. We will reduce the waste we produce and help others. In other words, we will be able to 'kill two birds with one stone’, and that is always a good thing.

1.

It's an excellent idea to recycle old mobile phones because________.

A. it reduces waste and can help others

B. it prevents waste and can earn lots of money

C. it can send the waste produced by developed countries to other countries

D. it is good for the environment and very educative for phone users

2.

The author gives the example of Mr. Negroponte’s cheap computers________.

A. to show what high technology can bring us

B. to show the kindness of people in the developed countries

C. to show how to find business opportunities in developing countries

D. to give an example of how to help developing countries

3.

Where does this passage probably come from?________.

A. A newspaper.              B. A magazine.

C. A lecture.                 D. An advertisement.

高二英语阅读理解简单题查看答案及解析

What do we know about Alice’s laptop?

A. It’s broken.　　 B. It’s very slow.　　 C. It works very well.

高二英语短对话简单题查看答案及解析

Seeing your picture, I could not resist _____ the days  _____ we spent together.

A. to think of; when                   B. to think of; which

C. thinking of; which                  D. thinking of; when

高二英语单项填空中等难度题查看答案及解析