选择知识点

I'm a real book lover.Every time my friends visit me,my nose is buried in a book.Wherever I go,I always have a book with me.Novels,history books,stories about people,journals and news—I read them all and I've learnt a lot,too.For example,many things in life happen for the best even if we don't like or understand them.
Why is reading such an enjoyable pastime for me？I probably first learned about it from my parents.My mother read to me at night in my childhood and bought me picture books.The greatest gift she has given me is a love for reading.And it will be a life-long habit.
No one ever asked me why I liked to read.They just saw me and asked,"Oh？Is that for school work？" And I just shook my head,"No.It's just for fun." While reading a good book,I can totally forget myself and fly to another world.It's like exploring through someone's eyes,which is just as exciting as watching a movie.
Reading is also necessary in order to learn about writing,to improve my use of words and phrases and broaden my knowledge.What a pity to see our imagination disappear,for we don't exercise it often.Reading can even be good for one's health,I think.Everyone should read sad stories that make us cry and also books with humor that make us laugh out loud!



Among the gifts my parents have given me,which is the most valuable one？ ______

A. A love for reading.
B. Picture books.
C. Good health.
D. A lovable pastime.

In the fourth paragraph,the author thinks reading can ______ .

A. make his parents happy
B. finish his school work
C. improve writing and broaden knowledge
D. help him understand some movies

If we don't use our imagination often, ______ .

A. it is bad for our health
B. we will soon learn how to write
C. it will help us to have a good rest
D. it will soon disappear

What does the passage mainly talk about？ ______

A. Why do I have few friends？
B. What are my life habits？
C. Why do I love reading？
D. Why do things happen for the best？

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（=unclear）.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 our 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 distance as people with two eyes.



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

When things far away seem indistinct（模糊不清），one is probably ______ .

A. near-sighted
B. far-sighted
C. astigmatic
D. suffering from cataracts

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

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

Along the river banks of the Amazon and the Orinoco there lives a bird that swims before it can fly,flies like a fat chicken,eats green leaves,has the stomach of a cow and has claws（爪）on its wings when young.They build their homes about 4.6 m above the river,an important feature（特征）for the safety of the young.It is called the hoatzin.
In appearance,the birds of both sexes look very much alike with brown on the back and cream and red on the underside.The head is small,with a large set of feathers on the top,bright red eyes,and blue skin.Its nearest relatives are the common birds,cuckoos.Its most striking feature,though,is only found in the young.
Baby hoatzins have a claw on the leading edge of each wing and another at the end of each wing tip.Using these four claws,together with the beak（喙），they can climb about in the bushes,looking very much like primitive birds must have done.When the young hoatzins have learned to fly,they lose their claws.
During the drier months between December and March hoatzins fly about the forest in groups of 20 to 30 birds,but in April,when the rainy season begins,they collect together in smaller living units of two to seven birds for producing purposes.



What is the text mainly about？ ______

A. Primitive birds and hoatzins of the Amazon.
B. The appearance and living habits of hoatzins.
C. Hoatzins in dry and rainy seasons.
D. The relatives and enemies of hoatzins.

Young hoatzins are different from their parents in that ______ .

A. they eat a lot like a cow
B. they live on river banks
C. they look like young cuckoos
D. they have claws on the wings

What can we infer about primitive birds from the text？ ______

A. They had four wings like hoatzins.
B. They had a head with long feathers on the top.
C. They had claws to help them climb.
D. They could fly long distances.

Why do hoatzins collect together in smaller groups when the rainy season comes？ ______

A. To keep themselves warm.
B. To produce their young.
C. To find more food.
D. To protect themselves better.

US writer Margaret Lee Runbeck once wrote,"Happiness is not a station you arrive at,but a manner of traveling." But traveling is not always happy,at least for the two people in the movie Green Book.
The movie was based on the true story of a road trip through the southern US in the early 1960s.In the film,the black pianist Don Shirley hires Italian-American Tony Vallelonga to drive him to perform,but they face problems because of Shirley's skin color.These problems lead them to form a special friendship.
"There's something so deeply right about this movie,so true to the time," wrote US film critic Mick LaSalle at the San Francisco Chronicle.The time LaSalle talked about was between the late 1870s and 1960s,a very different period in US history,when many parts of the country had Jim Crow laws,which allowed racial separation（种族隔离）.These laws made life and travel dangerous for African-Americans.They couldn't use certain hotels,restaurants,or even gas stations.They had to be indoors after sunset or they might go to jail.Even famous black people had to follow the laws.
But in 1936，a black mail carrier named Victor H.Green had an idea.He made a list of friendly businesses in New York City.He published the list as a small book with a green cover.The Green Book helped African-Americans travel more safely.Then,in 1964，Jim Crow laws went away.The book went away,too.Today many US people still remember the time of Jim Crow,but they probably don't know about the Green Book.Thanks to this movie,maybe people can remember it again.



What can be known about the movie Green Book？ ______

A. It focuses on friendship.
B. It tells a happy travel in the southern US.
C. It shows the racial problem in US history.
D. It mainly describes a black pianist's special life.

What does the author intend to do in paragraph 3？ ______

A. Start a new topic for discussion.
B. Introduce the origin of the movie.
C. Summarize the first two paragraphs.
D. Provide some background information.

What does the underlined word "jail" in paragraph 3 probably mean？ ______

A. Bed.
B. Prison.
C. Station.
D. Church.

What can we infer from the last paragraph？ ______

A. US people think highly of the Green Book today.
B. Jim Crow laws went away because of the Green Book.
C. The Green Book is a good guide for foreigners traveling in America.
D. Victor H.Green made a great contribution to African-Americans.

We all need to eat,and when we go to buy food at the supermarket,we're offered many choices.But we often buy food that's been produced in huge amounts and that's traveled many miles before it ends up on our plate.So for some,growing their own food is a better choice - and it tastes good too!
From growing vegetables in little pots on your balcony to taking care of a small plot of land,there are many ways to produce home-grown food.It can be backbreaking work digging,weeding and watering the soil,but the result is fresh,home-grown fruits and vegetables,helping us keep a 'five-a-day' diet.
The recent Covid-19 pandemic（流行病）lock-down means demand for homegrown food has seen a comeback in the UK.Miriam Dobson from the University of Sheffield,told the BBC that some people have been spending a lot of their time on their plots,growing plenty of fresh fruit and vegetables - which,at times,have been challenging to buy in supermarkets.She says "Coronavirus has reminded people of the weakness within our global food system.In such a difficult time,interest in self-support rises."
But for those with limited space,a solution to grow your own vegetables lies closer to home - using pots.Sheila Brand lives in a third-floor flat in Rotterdam.She has managed to grow tomatoes and eggplants and is already harvesting raspberries.She told the BBC watching the plants grow "is very exciting：'Oh it's got a new leaf!' "
As well as the benefits of saving money and enjoying tasty food,growing your own from a balcony or window ledge not only improves your well-being and immediate environment,you can actually grow a lot of vegetables.So,maybe it's time for us all to get planting and develop our green fingers!



A "five-a-day" diet （Para.2）probably refers to a diet that include ______ every day.

A. Five meals
B. Enough fruits and vegetables
C. Five kinds of rice
D. Plenty of water

According to Para 3，home-grown food is getting popular again in the UK recently because ______ .

A. it's more interesting,cheap and delicious.
B. our global food system is doing harm to us.
C. it saves the time and money on transportation.
D. it can be hard to buy fresh food during the pandemic.

According to the writer,where can you grow your own food if you live in a small flat？ ______

A. In a pot.
B. On a plate.
C. In a garden.
D. On the roof.

What does the writer imply in the last sentence？ ______

A. Growing your own food can do good to your health.
B. Growing your own food can make your fingers green.
C. Growing your own food can improve your gardening skills.
D. Growing your own food can bring your family more happiness.

A new study has found that social media could be affecting the sleep of young adults.
The study is a project of researchers at the University of Pittsburgh's School of Medicine.They found that young people who often use social media are more likely to suffer from sleep disorders than those who use social media less.The researchers say doctors should ask young adults about their use of social media when treating sleep issues.
"This is one of the first pieces of evidence that social media use really can influence your sleep." said Jessica C Levenson.She was the lead author of a report on the study.
The researchers set out to examine the connection between social media use and sleep among young adults..Levenson noted that these young adults are possibly the first "generation to grow up with social media."
The researchers wanted to find out how often young people used social media sites like Face book,Twitter,Credit and Tumbler.For the study,they gave questionnaires（问卷）to nearly 1，800 adults,aged 19 to 32.On average,members of the study group used social media sites one hour a day.They also "visited various social media 30 times per week. "
Thirty percent of the study's participants reported having serious problems with sleeping.Those people who used social media a lot were three times more likely to have a sleep disorder.And those who spent the most time on social media were two times as likely to suffer from sleep disturbances.
Levenson said the number of times a person visits social media is a better predictor of sleep problems than overall time spent on social media.If this is true,she adds,then practices that stop such behaviors may be the most effective.



What's the main idea of the text？ ______

A. The researchers focus on social media.
B. The researchers manage to handle sleep problems.
C. Social media affects sleep.
D. Doctors treat young patients.

When treating sleep problems,doctors are advised to ______ .

A. offer some advice about giving up social media
B. ask the patients about young adults' use of social media
C. give young adults some medicine
D. ask about the patients' living conditions

How did the researchers mainly carry out the study？ ______

A. By doing online research.
B. By doing questionnaires.
C. By collecting published data.
D. By giving an example.

What can be inferred from the text？ ______

A. Men are more likely to suffer from a sleep disorder than women.
B. People often using social media are less likely to have a sleep disorder.
C. Using computers less helps avoid sleep problems completely.
D. Sleep problems can be determined by the times of a person visiting social media.

The lights go down,music plays,and a young woman on a bike at the front of the class encourages students to spin faster and harder.When the lights go back on,the students on the bikes pull out their notebooks,and it's clear that this is not SoulCycle.Instead,it's a first-of-its-kind business school course at Fordham University that is taught on spin bikes in a university.
"It's the first class that I mention to anybody when anybody asks me what classes I'm taking," said Amanda Vopat,22，a business administration major. "I think people are really excited about it."
The 75-minute,twice-weekly course is the brainchild of Julita Haber,a business school professor at Fordham. "I have been introducing movement and fitness in my classes for the past seven years," she said. "I found the spin class would really allow students to exercise while a professor lectures at the same time."
The course the students are taking while cycling is no joke.Managing Professional Relationships is an upper-level business school course taken primarily by juniors and seniors.The students are fully instrumental in each class,selecting the music,leading stretches before and after class and leading the intervals during the class.
Haber stops her lecture every 20 minutes throughout the class.While one student turns off the lights,another student turns up the music and a third student goes to a bike in the front of the class to lead their classmates in high-intensity interval that lasts two to three minutes,just enough to re-energize the students.
"It's a fantastic way of engaging students and as a professor,as a teacher,that's really gratifying," she said. "They don't have their smartphones,and they don't have laptops so they are physically engaged and also mentally engaged in what is being said."
The course is the first of its kind at Fordham,and Haber believes it is also a first across the United States.She has authored research on the unique classroom approach,which she calls fitness integrated（综合的）learning.
Donna Rapaccioli,the head of Fordham's Gabelli School of Business,described how students were "energized" by the class and said Fordham was open to expanding it to other courses. "Definitely," Rapaccioli answered when asked if Haber's course represents the future of learning.



What might SoulCycle be？ ______

A. A health club.
B. A repair shop.
C. A bicycle store.
D. A music studio.

What do we know about the business school course？ ______

A. It lasts seventy-five minutes without breaks.
B. It was originally thought up by Julita.
C. It was taught in a university gym once every 2 weeks.
D. It is open to all students at Fordham University.

Which of the following is correct according the passage？ ______

A. Haber has introduced the spin class seven years before.
B. Students pull out their notebooks while riding the spin bikes.
C. Haber is satisfied with her course.
D. The course has become popular in the US.

How did Donna Rapaccioli sound？ ______

A. Humorous and clever.
B. Hopeful and cheerful.
C. Serious and friendly.
D. Proud and confident.

For fishermen and sailors in the seaside town of Shangpan in Linhai,Zhejiang province,where recently 12 stranded（搁浅的）whales were found,it is not unusual to spot whales or dolphins in the sea — they would always call them haizi,or "son of the ocean".And if the local fishermen spot such intelligent sea creatures in need,they will save them from danger without hesitation.
In the recent rescue of melon-headed whales,they tried their best to help as a 37-second video of a young man sleeping in the water holding a whale soon went viral online,with netizens applauding his constant efforts and caring heart in trying to keep the whale alive. "The melon-headed whale knew I was trying to save it and would be more cooperative and wouldn't move." said Lu Wenhui,a 21-year-old diver from Hangzhou Changqiao Polar Ocean Park,who held up the whale's head so it could breathe easily.Lu had been staying in the water for 10 hours by 4 a.m.Wednesday after coming for the rescue work on Tuesday,when the stranded whales were first spotted.
"Whales are mammals and need to breathe in air — that's why I had to hold its head,to ensure it could breathe smoothly the whole time," Lu said.The stranded whales,after the struggling of being transported,were worn out when they arrived at the fish farm and might have drowned if they were left unattended.
The reason why the whales were stranded is still not clear.And these stranded whales were returned to the ocean because they are not adapted to artificial breeding environments on land.



What do local fishermen usually do after finding haizi in danger？ ______

A. Ignore them.
B. Feed them.
C. Transport them.
D. Protect them.

Why does the author describe Lu's rescue work？ ______

A. To introduce the whales in detail.
B. To voice his views on the diver.
C. To praise the efforts made by rescuers.
D. To explain the value of the whales.

What can we say about the melon-headed whales according to the text？ ______

A. They are rarely seen by locals.
B. They are used to breathing in the sea.
C. They aren't suited to artificial surroundings.
D. They are fond of swimming near the seaside.

Which of the following can be the best title for the text？ ______

A. Melon-headed Whales Were Stranded
B. Rescuers Went All out to Help Whales
C. Fishermen Transported Stranded Whales
D. Witnesses Voiced Opinions on Rescue Work

The vaccine（疫苗） news continues to seem very encouraging.Britain started its mass vaccination effort and the U.S.isn't far behind.
But there is still one dark cloud hanging over the vaccines that many people don't yet understand.
The vaccines will be much less effective at preventing death and illness in 2021 if they are introduced into a population where the coronavirus is still severe - as is now the case in the U.S.
A vaccine is like a fire hose（消防龙头）.A vaccine that's 95 percent effective,as Moderna's and Pfizer's versions appear to be,is a powerful fire hose.But the size of a fire is still a bigger determinant of how much destruction occurs.
At the current level of infection in the U.S.（about 200，000 confirmed new infections per day），a vaccine that is 95 percent effective-distributed at the expected pace-would sill leave a terrible toll（伤亡人数）in the six months after it was introduced.Almost 10 million or so Americans would catch the virus,and more than 160，000 would die.
This is far worse than the toll in a different situation where the vaccine was only 50 percent effective but the U.S.had reduced the infection rate to its level in early September（about 35，000 new daily cases）.In that case,the death toll in the next six months would be kept to about 60，000.
It's worth pausing for a moment on this comparison.If the U.S.had maintained its infection rate from September and Moderna and Pfizer had announced this fall that their vaccines were only 50 percent effective,a lot of people would have panicked.
But the reality we have is actually worse.
How could this be？No vaccine can get rid of a pandemic immediately,just as no fire hose can put out a forest fire.While the vaccine is being distributed,the virus continues to do damage.
There is one positive way to look at this：Measures that reduce the virus's spread - like mask-wearing,social distancing and rapid-result testing-can still have great consequences.They can save more than 100，000 lives in coming months.



How does the author mainly present his argument？ ______

A. By giving definitions.
B. By categorizing facts.
C. By drawing comparisons.
D. By appealing to emotions.

Which does the author think is a better way to save lives？ ______

A. Improving the effectiveness of the vaccines.
B. Producing a greater variety of vaccines.
C. Looking at the situation in a positive way.
D. Wearing masks and practicing social distancing.

What does paragraph 6 tell us？ ______

A. The vaccines are less effective than expected.
B. The US have controlled the spread of the coronavirus.
C. The death toll in the next six months will be about 60，000.
D. Fewer people will die if the infection rate is lower.

What can we infer from the text？ ______

A. The vaccine is the hope of wiping out the pandemic.
B. The public are optimistic about the effects of the vaccine.
C. The public are concerned about the high infection rate.
D. The distribution of vaccine will end the pandemic quickly.

We know that cigarette smoking kills.So,producers made electronic cigarettes as a safer smoking choice—safer than tobacco.Although e-cigarettes contain the drug nicotine like cigarettes,they do not use tobacco and you do not light them.They are powered by battery.
However,if e-cigarettes are so safe,why has the United States Center for Disease Control（CDC） seen an increase in telephone calls about e-cigarette poisonings？
The answer is children.Most of the calls are from people worried about children who have played with the devices.In the period of one month this year,the Center said 215 people called the Center with e-cigarette concerns.More than half of these calls were for children aged five and younger.The devices had made them sick.
Tim McAfee is director of the Center's Office on Smoking and Health.He says the problem is regulation,meaning the U.S government does not control e-cigarettes even though they contain liquid nicotine.Mr.McAfee adds that liquid nicotine is a well-known danger.Mr.McAfee explains that nicotine poisoning happens when it gets into the skin,gets into the eyes or is swallowed.It can cause stomach pain or a sense of unbalance.And too much nicotine can kill.
Tim McAfee says e-cigarettes do not create the level of risk to people that tobacco products do.He notes that almost 500，000 Americans die each year from cigarettes. "So,cigarettes are the winner in that contest." E-cigarettes do not contain hundreds of harmful chemicals that are found in real cigarettes.So,the U．S.Surgeon General Boris D.Lushniak has suggested that e-cigarettes may be a useful tool for adults trying to end their tobacco use.
But McAfee worries that teenagers may think electronic cigarettes are harmless.They could become addicted to the nicotine and then start smoking real cigarettes.In other words,he fears that for young people fake e-cigarettes could be a "gateway" to the real thing.



What do the producers think of e-cigarettes？ ______

A. Dangerous.
B. Expensive.
C. Safer.
D. Cheaper.

Why did the CDC receive so many calls about e-cigarettes？ ______

A. Parents feared that their children might get poisoned.
B. Parents found the device useless in quitting smoking.
C. Children swallowed the liquid nicotine from the device.
D. Children might get addicted to playing with the device.

It can be inferred from the passage that ______ .

A. the CDC wants to develop a better type of e-cigarettes
B. the government is in favor of the use of e-cigarettes
C. Surgeon General Boris D. Lushniak is a heavy smoker
D.smokers most probably can't quit smoking using e-cigarettes

What is Tim McAfee's opinion about smoking？ ______

A. Adults should use harmless e-cigarettes.
B. Smoking e-cigarettes can make a person sick.
C. He claims that regulations should be made to ban smoking.
D. He is concerned about the teens using e-cigarettes.