Dogs might have the latest tools in the fight against cancer （癌症）：their noses!Researchers at California's Pine Street Foundation （PSF） say they have trained five dogs to smell cancer on a prison's breath.This could be exciting news.
A dog's sense of smell may be 10，000 to 100，000 times stronger than ours.But can dogs really smell illness？PSF researcher Michael McCulloch says yes. "We were very surprised by how exact they were，" he said. "They were telling who had cancer，and they were also saying who didn't."
McCulloch and his team asked four healthy people and one with cancer to blow into plastic tubes （塑料管）.Special materials in the tubes kept the things of each breath.The tubes were then placed one yard apart.Finally the dogs were allowed to smell the tubes.Each dog had been trained for three weeks to sit when it smelled cancer.Ninety﹣nine percent of the time，the dog sat next to the tubes blown into by patients with lung cancer.The dogs were right 88 percent of the time about breast cancer.
Dogs in the Pine Street Foundation test were trained to sit when they smelled cancer.How well did they perform？Take a look at this chart to find out. |
||
Breath Sample |
Number of Times the Dogs Sat Down |
Number of Times the Dogs Kept Standing |
Breath from lung cancer patients |
564 |
10 |
Breath from healthy persons |
4 |
720 |
No lab test for cancer has given more correct results than this test.The results are so amazing that many experts question the dogs' smelling power.They wonder if there were other reasons why the dogs did so well.For example，they thought the way the dog trainers behaved could have influenced how the dogs acted.However，most experts agree that this study is important.The information could help scientists create a simple breath test for cancer in the future.Once again humans may be getting a helping paw or nose﹣from their best animal friends.
（1）What's the latest tool a dog might have in the fight against cancer？
A.Tooth.
B.Nose.
C.Ear.
（2）What happened first in the Pine Street Foundation test？
A.The dogs were trained.
B.The tubes were placed one yard apart.
C.The dogs smelled the tubes.
（3）What was a dog supposed to do when it smelled cancer？
A.Smell again.
B.Turn around.
C.Sit down.
（4）Look at the chart.How many times did the dogs keep standing when they smelled the breath from healthy persons？
A.Less than 10 times.
B.Almost 600 times.
C.About 700 times.
（5）Why do many experts question the dog's smelling power？
A.Because no lab test for cancer has given more correct results.
B.Because the dog trainers influenced how the dogs acted.
C.Because they don't think this study is important.
Can a green machine help the world's poorest kids learn better？Nicholas Negroponte thinks so.He and his team of scientists have invented a new type of computer.As a result，many children who live in poverty （贫穷） will have their own laptop computers!
Negroponte works at a university.He started a group called One Laptop Per Child （OLPC）.The people at OLPC don't work for money.They work to help children learn.OLPC makes computers that don't cost a lot.Then they sell the machines to governments of countries that have many people live in poverty.The governments then give the computes to kids for free.
The XO Laptop computers are made for school﹣aged children in developing nations.Many of these children live in faraway areas and go to schools with classrooms.In order to work，the laptops have to be lasting and student﹣friendly.
The machines have many fun characters like a built﹣in video camera，voice recording，and games.The WiFi lets students share information on the Web and read e﹣books.They also can make music and chat with friends.
Another great character is that it can last for a long time.It can be hand charged and also can be recharged by connecting to a solar panel.Because of these characters the XO laptops make learning fun while helping the environment.
The computers have a colorful name﹣"the green machine".Negroponte thinks they could make a difference in the lives of millions of kids.He says， "Every problem you can think of﹣poverty，peace，the environment﹣is solved with education."
OLPC plans to give out over ten million computers in the next few years.Kids in Thailand，Nigeria，Brazil，and Argentina will get most of them.China and Egypt also want to take part in the program.After that，Negroponte hopes to sell computers to other countries with high poverty.
（1）Negroponte thinks his laptop computers will help the world's poorest kids to .
A.work at home
B.go to school on time
C.learn better
（2）What can we know about the people at OLPC according to Paragraph 2？
A.They work for money.
B.They give computers to kids for free.
C.They sell computers to governments with many people living in poverty.
（3）Why do XO laptops make learning fun while helping the environment？
A.Because they are lasting and student﹣friendly.
B.Because they are made for school﹣aged children.
C.Because they have a colorful name.
（4）What does the underlined word " charged" mean in Chinese？
A.携带.
B.充电.
C.使用.
（5）Who will get most of the computers in the next few years？
A.Kids in Thailand.
B.Kids in China.
C.Kids in Egypt.
（1）41.0% of kids aged use the Internet.
A.5﹣9
B.10﹣13
C.14﹣17
（2）What percentage of kids gets news or information online？
A.89%.
B.76%.
C.38%.
（3）What do 43% of kids usually do on the Internet？
A.Play games.
B.Buy books.
C.Send or receive instant messages.
China's unbelievable high﹣speed rail network At the beginning of the 21st century China had no high﹣speed railways.Slow，crowded and often uncomfortable trains ran across this vast country，with low average speeds making journeys such as Shanghai﹣Beijing a test of travel. Today，it's a completely different picture.With 37，900 kilometers of lines，linking all of its major big cities.China has the world's largest work of high﹣speed railways.Half of that total has been completed in the last five years alone，with a further 3，700 kilometers due to open in the coming months of 2021.The network is expected to double in length again，to 70，000 kilometers，by 2035. |
（1）How were the trains in China at the beginning of the 21st century？
A.Fast.
B.Comfortable.
C.Crowded
（2）How many kilometers of lines are due to open in the coming months of 2021？
A.3，700.
B.37，900.
C.70，000.
Mary Armstrong was a pretty little girl，but she did not pay attention to her things.She usually left her books and playthings everywhere，and it gave her mom much trouble in picking them up and putting them in the proper places.Some of her books and toys became spoiled（损坏）.Her mom had often told Mary the bad result of being so careless.The growing habit of carelessness would make her unhappy，and sometimes annoy her friends.Even worse，it would be of great harm to her all her life.But Mary didn't listen to her mom.So they argued a lot.
One day Mary made a beautiful toy，a gift for her best friend's birthday.When her mom asked her to go out into their yard to play，Mary put the toy in her room casually（不经意地）.She ran around and played happily there.An hour later，it was time to go to her friend's birthday party.Mary went back to get the toy.But she couldn't find it anywhere.Finally，she found the toy broken in the corner.At once she realized that Dash，her pet dog had done this，and she was very angry.Carrying the broken toy to her mom，she couldn't help crying.
Mrs.Armstrong asked Mary if she had left the toy in the place where Dash could easily get it，and Mary answered， "Yes，mom"
"Then you should not be irritated，Mary，because the dog does not know it is wrong to play with your toy.I hope this will be a lesson to you hereafter，to put your things away when you finish"
I will try， "said Mary.And her mom promised to repair the toy as well as she could.
根据短文内容，选择最佳答案。
（1）What did Mary and her mom argue about？
A.Her books.
B.Her playthings.
C.Her way of making friends.
D.Her habit of carelessness.
（2）Why did Mary cry when carrying the gift to her mom？
A.Because her gift was broken.
B.Because Dash broke her book.
C.Because Dash annoyed her friends.
D.Because Mrs.Armstrong was mad at her.
（3）Which is the right order of he following things？
①Dash broke the toy. ②Mary put the toy in her room.
③Mary found the toy in the corner. ④Mom would repair the toy for Mary.
A. ①③②④
B. ①③④②
C. ②①④③
D. ②①③④
（4）What does the underlined word "irritated" in the fourth paragraph probably mean？
A.Glad.
B.Scared.
C.Angry.
D.Interested.
（5）What does the passage mainly tell us？
A.Listen to our parents，and they'll repair our things.
B.Be kind to our pets，and they won't break our things.
C.Get on well with our friends，and we'll get birthday gifts.
D.Be careful with our things and we'll develop a good habit.
According to a recent survey by Xinhua Research Center，Chinese people prefer buying local brands over foreign brands.The first China Brand Day fell on May 10.2017.A lot of activities take place to help Chinese brands develop across the country on that day every year.Let's take a look at the results of the survey.
In the past， "Made in China" made people think of cheap and poor quality（质量差的）products.But that seems to be changing.Chinese people show a lot of interest in low price，good quality and creative design（设计）.Experts say Chinese brands will continue to be more popular over the next 10 years.
根据短文和图表内容，选择最佳答案。
（1）Xinhua Research Center did a survey about .
A.prices
B.quality
C.brands
D.design
（2）32% of Chinese people don't care about brands in .
A.food
B.medicine and health care
C.bags and cases
D .poor﹣quality products
（3） of Chinese people prefer local bags and cases.
A.10%
B.22%
C.31%
D.47%
（4）Chinese people choose local brands because of the following except .
A.fine materials
B.good quality
C.creative design
D.low prices
（5）From the passage，we can know .
A. "Made in China" is popular among Chinese people all the time
B.foreign brands will not be accepted by Chinese people in ten years
C.only 10%of Chinese people prefer foreign food while others hate it
D .many activities are organized to help Chinese brands to develop on China Brand Day
According to UNESCO，a large number of children in villages in some African countries like Kenya and Tanzania do not go to school.They have to work to make money for their family.And more than half of people in these countries live without electricity.
A company is now working to solve both of these problems.It has created a special solar（太阳的）power station，which is in the shape of a cow，called"Solar Cow".The company encourages parents in those poor villages to send their children to school by setting up Solar Cows at schools.
Just as its name suggests，the Solar Cow can charge batteries（给电池充电）called"Solar Milks".The Solar Milks provide electricity for the families.
The batteries can only be charged using the Solar Cow，so children have to go to school to get the electricity.Everyday，children put their batteries into the bottom of their school's Solar Cow.
They go to class while the batteries are being charged.At the end of the day，they take the charged batteries home.
Each fully﹣charged Solar Milk battery can charge a mobile phone three or four times，or a radio once or twice.The battery is also a flashlight，and it can provide ten hours of light."My father used to travel two to three hours to the charging shop to charge his phone，and it cost a lot，" a boy said. "But now，he can use the battery I bring from school to charge his phone at home."
Since 2018，this company has set up two Solar Cows in Kenya and one in Tanzania.The company also started to raise money for more Solar Cows to help the poor children in Africa.
根据短文内容，选择最佳答案。
（1）What is a Solar Cow？
A.An animal which can produce milk.
C.A mobile phone in the shape of a cow.
B.A solar battery in the shape of a cow.
D.A solar power station in the shape of a cow.
（2）How does the company encourage the parents to send their children to school？
A.By giving them money.
B.By setting up Solar Cows at schools.
D.By building some schools in the villages.
C.By offering them cows.
（3）What is the correct order for children to get the electricity for their families？
a.Children go to school with batteries.
b.Children take the charged batteries home.
c.Children have classes while the batteries are being charged.
d.Children put the batteries into the bottom of their school's Solar Cow.
A.a﹣d﹣c﹣b
B.a﹣c﹣d﹣b
C.b﹣d﹣c﹣a
D.b﹣a﹣c﹣d
（4）What can each fully﹣charged Solar Milk battery do？
A.It can charge a radio three or four times.
B.It can provide electricity for a Solar Cow.
C.It can provide ten hours of light as a flashlight.
D.It can charge a mobile phones even or eight times.
（5）What does this passage mainly talk about？
A.Solar Cows have provided electricity for the schools.
B.Some African children don't go to school because they have to work.
C.More than half of people in Kenya and Tanzania live without electricity.
D.Solar Cows are resolving two problems at the same time in some African countries.
Felicia Grimmenhag from Sweden doesn't let anything get in her way，even a life﹣changing accident.
After a serious car accident，Felicia had to get used to getting around in a wheelchair（轮椅） .But that didn't stop her from following her dream of becoming a top horse rider.
In early June 2011，17﹣year﹣old Felicia got hit by a car.When she woke up in the hospital，she found both of her legs were missing.However，Felicia didn't quit trying to achieve her dream.She wanted to get back on the horse.She had ridden as a little girl and decided in the hospital to try again.She was n't sure if she would be able to.But after ten weeks' training，she could ride once again!
"The horses have meant a lot to me， "Felicia said."When I sit on a horse，I don't feel like the disabled Felicia，I feel like the confident（自信的）Felicia."
She has since taken part in competitions around the world，showing she doesn't need legs to win.Last year，she won silver at the Swedish Championships，and now she is preparing for the Tokyo Paralympics.
"What I have learned from all this is that you should dare to challenge yourself，and remember that you are the only person that sets your own limits（限制), "Felicia said.
根据短文内容，选择最佳答案。
（1）What did Felicia lose in the car accident？
A.Her arms.
B.Her legs.
C.Her ears.
D.Her eyes.
（2）What does the underlined word"quit"in Paragraph 3 probably mean？
A.Keep.
B.Enjoy.
D.Stop.
C.Begin.
（3）How long did it take Felicia to train to ride a horse again？
A.One year.
C.Ten weeks.
B.Nine years.
D.Seventeen weeks.
（4）The horses have meant a lot to Felicia for reasons of the following EXCEPT .
A.becoming a top horse rider is her dream
B.she is filled with confidence when riding a horse
C.she can get around on a horse instead of in a wheelchair
D.she doesn't feel disabled anymore when sitting on a horse
（5）Which of the following can best describe Felicia's experience？
A.Never say never.
B.Better late than never.
D.It's never too late to learn.
C.Never think of yourself.
When we talk about the UK，what will you think of？Big Ben，Downing Street and Tower Bridge are always our hot topics（话题）.But there are many other facts about the UK.Come and see!
|
The most popular museum is the British Museum in London. Over six million people visit it every year.It is open from 10：00 a.m to 5：00 p.m.But on Friday，the closing time is 8：30 p.m. |
|
The River Severn starts in Wales and flows （流） through western England.It's well known for the Severn Bore一a tall wave （波浪）of water that regularly （定期地） flows up the river from the sea. |
|
Hungry？Beef and chicken are tasty，fruit and vegetables are healthy，and sandwiches are simple.Short of money？The cheapest food is fish and chips （炸鱼薯条）.And it's delicious. |
（1）When can we visit the British Museum？
A.At 9：00 a.m，Monday.
B.At 10：30 a.m，Tuesday.
C.At 9：30 p.m，Friday.
（2）What is the River Severn famous for？
A.Its tall wave of water.
B.Its beautiful riverbank.
C.Its deep river bed.
（3）The reading material（材料） above is most probably .
A.a business plan
B.a travel guide
C.a science report
Hotel Workers Wanted Isabella Hotel is a top hotel in the center of Queensland.We're looking for experienced waiters and waitresses.You are expected to work from 7 a.m.to 3 p.m. You should ➢be healthy ➢be well﹣dressed ➢be reliable（值得信赖的） If you join us，you will get ➢＄ 400 every week ➢all meals for free ➢a separate room ➢one free day every week If you are interested in this job，you can write to jobhunt @scottoday.com. |
（1）How long should the workers at Isabella Hotel work in a day？
A.For three hours.
B.For seven hours.
C.For eight hours.
（2）What will Isabella Hotel provide for the workers？
A.400 dollars a month.
B.Two free days a week.
C.All meals for free.
In Darayya，a city in Syria，there's a library and it has 15，000 books on almost every subject you can think of.However，it is different from any libraries you know：It is a secret underground library，and only people in Darayya know where it is.
Over the years，war has shaken Darayya badly.△ Stores are closed one after another，and so are schools.To help the kids in Darayya with their learning，Anas Ahmad，a 19 year﹣old student，and his friends decided to build a library.They built the library under the ground to keep it safe from bombing.But it is dangerous to collect books for the library.Often，Ahmad and his friends lo for books in houses that were bombed.They need to be careful because they may be killed in another bombing.
You may ask， "In a place like Darayya，would people be interested in books？" "Just like the body needs food，the mind needs books， "says one library user.In the library，people enjoy their time of reading and forget about the terrible world above，so their life doesn't seem so hard.Through reading，they are able to dream of a better life after war.
（1）What do we know about Darayya's library？
A.It was built during the war.
B.It has been bombed many times.
C.Most of its books are from outside of Darayya.
（2）Which can best replace "△" in the passage？
A.Every day，houses are bombed and people are killed.
B.Every night，people come to help to build the library.
C.Every Monday，kids come to the library to read different books.
（3）Why do people in Darayya go to the library even during the war？
A.They can get free food.
B.They find joy and hope in reading.
C.They want to learn how to win the war.
（4）The sentence﹣ "Just like the body needs food，the mind needs books， "says one library user. ﹣is used .
A.to answer the question above
B.to offer a solution to a problem
C.to give a supporting example for a topic
Moderation（自我调节）
Pay attention to how you lead your life most of the time.A healthy lifestyle is one that doesn't take extremes（极端）as a way of life.Be moderate in what you do.
Eat well
It is important to pay attention to both what you eat and how you eat.As Socrates said ： " You should eat to live；not live to eat." A different diet（饮食）with vegetables and fresh fruits is good for the brain.Also take time off for meals.
Exercise
Students must know the value of exercise because it plays a necessary part in counterbalancing（抵消）the stress（压力）responses produced in our bodies by having to meet exams.
Sleep
Students are getting less and less of sleep which might lead to more stress.The hours of sleep before midnight are thought to be the most helpful.For this reason students must re﹣regulate their body clock and go to bed and get up at regular time.
Express yourself
The way students feel about their work and other issues in their life plays a huge part in how they deal with stress.It is advisable that students should be realistic whatever happens in their lives.
To sum up，studies are really very important，but never at the expense（代价）of students' physical and mental wellbeing.Besides，if students feel well they will be ready to face the challenges（挑战） of exams alive and kicking.
（1）What food is good for the brain according to paragraph two？
A.Vegetables and fruits.
B.Hamburgers and meat.
C.Rice and noodles.
（2）When is the best time for a student to go to sleep？
A.At 7：00 p.m.
B.At 10：00 p.m.
C.At 1：00 a.m.
（3）Where can we most probably read this article？
A.In a tour guide.
B.On a web page for tips.
C.In a daily newspaper.
（4）What's the best title of the reading？
A.Stress in part of students' lives.
B.A healthy mind in a healthy body.
C.Prepare for your exams with a healthy body and mind.
The city of music
Vienna is a beautiful old city on the River Danube in the center of Europe.It's the capital city of Austria and the center of European classical music.In the eighteenth century a lot of musicians came to study and work in Vienna.
In the Strauss family，there were two composers（作曲家）called Johann Strauss：the father and the son.The father，Johann Strauss he elder，wrote and played music for traditional dances，called the waltz.His dance music made him famous all over Europe.The son，Johann Strauss the younger，was also very successful and popular.He wrote over 150 waltzes.In 1867 he wrote The Blue Danube waltz.
Mozart was another very important composer.He was born in Austria in 1756.Before he was six，he played not only the piano but also the violin.His family took him around Europe and he gave concerts in many cities.He wrote hundreds of pieces of music.But he became very poor and died in 1791 when he was only thirty﹣five.Like Johann Strauss，father and son he was a great European musician，and many people still think his music is perfect.
（1）Where is Vienna？
A.In Australia.
B.In Austria.
C.In America.
（2）Who wrote The Blue Danube waltz？
A.Johann Strauss the younger.
B.Johann Strauss the elder.
C.Mozart.
（3）What kind of music does the waltz belong to？
A.Blues music.
B.Country music.
C.Classical music.
（4）When was Mozart born？
A.In 1867.
B.In 1791.
C.in 1756.
Think of somebody you really admire.You will probably find that their success didn't come easily.As "Father of Hybrid Rice（杂交水稻）"，Yuan Longping got over great difficulties and spent his whole life working to reduce world hunger and helping to feed the country with the largest population.
Wu Mengchao，the "Father of Chinese Hepatobiliary Surgery（肝胆外科）"，focused on saving people's lives for nearly eighty years.He performed more than 16，000 operations during his life.Holding the surgeon' s knife for such a long time deformed his fingers .Wu once said， "It would my greatest happiness if I could work at the operating table until my dying day."
In1969，in order to solve the problem of treating malaria（疟疾），Tu Youyou，pharmacologist （药学家） took on the job as head of a research team.She and her teammates performed different kinds of experiments.However，the results were disappointing.Instead of giving up，they kept trying.Finally，in1972，they made it!In2015，at the age of 85，she received Nobel Prize.
Thomas Edison，the inventor of the light bulb believed that every failure was a step towards success.He once said， "If I find 10，000 ways something won't work，I haven't failed.I am not discouraged，because every wrong try is another step forward.
Sometimes，their success was a surprise，even to themselves.The famous scientist Alexander Fleming said， "When I woke up just after daybreak on 28th September，1928，I certainly didn't plan to revolutionize（变革） all medicine by discovering the world's' first antibiotic（抗生素）.But I guess that was exactly what I did.
Some people only became successful after their deaths.Not like Pablo Picasso who became famous and very rich during his lifetime，the artist Vincent Van Gogh only sold one painting all through his life and that was to a friend.But he kept painting and he painted more than 2，000 artworks in the following ten years.Now his paintings are very popular and they sell for millions of pounds.
One thing all these people have in common is sticking to their goals no matter what.
（1）What do Yuan Longping and Wu Mengchao have in common？
A.They succeeded in solving world problems.
B.They spent all their lives serving people.
C.They achieved a lot in the medical field.
D.They are remembered for their happiness.
（2）The underlined phrase deformed his fingers could be replaced by .
A.changed the shape of his fingers
B.made him feel down
C.gave him too much pressure
D.got his fingers cut off
（3）It is clear that .
A.Pablo Picasso became famous after his death
B.Vincent Van Gogh painted 2，001 artworks in his life
C.it took Tu Youyou's team about 3 years to reach their goal
D.Thomas Edison tried 10.000 ways before he invented the light bulb
（4）When Alexander Fleming discovered the first antibiotic，he .
A.felt too tired to stay awake
B.didn't plan to study all medicine
C.knew exactly what his success meant
D.didn't fully realize its importance
（5）What does the writer mainly want to tell us？
A.Not everyone can be successful.
B.The more difficulties，the better.
C.Great achievements aren't made naturally.
D.Great hopes make great men.
When I was very young，people in our village lived by planting fruit trees.My grandmother always took me to the orchard（果园） on the hill.At that time，they had to carry water from the river at the foot of the hill to halfway up the hill.Even though we worked so hard，the production level of fruit was still low because it was short of water there.
One day，two young men led a group of workers to our village.They learned about the difficulties we faced，and later，canals and other projects began to be built in my village， "Who are they？" I asked. "They are good men from our government，" my grandma replied.
Shortly afterwards，I moved to another city for my junior high school.The only reason I ever came back to my hometown was my grandmother.
One day，my family and I made time to return.We were surprised because everything had changed.The canal ran past every orchard so villagers didn't have to go up and down the hill anymore.The river was now so clean that fish swam happily in it.When we arrived home，my grandma took out some fresh pears and apples.She told us that after the water conservation project（水利工程） was completed a policy（政策） was made to encourage more people to increase the fruit production with clean water in the river.
Thank those good men who have devoted themselves to the development of our countryside.
Nowadays，people work hard to live in a big city，However，we should not forget our hometowns where we are from.
（1）What troubled the villagers most was that .
A.they had too much work
B.it was not convenient to go up the hill
C.they could only grow fruit trees
D.there wasn't enough water in the orchard
（2）The good men came and offered help probably because of .
A.the villagers' suggestions
B.the government's support
C.a school' s practical activity
D.a company's engineering plan
（3）We can infer from the passage that .
A.the grandmother doesn't like to live in the city
B.the village is a place of interest for tourists now
C.there will be more fruit production in the village
D.more people like to work in the countryside nowadays
（4）The underlined phrase devoted themselves to is closest in meaning to .
A.prepared much for
B.donated money to
C.drawn public attention to
D.put much effort into
（5）What can be the best title for the passage？
A.How is a village improved？
B.Who are the good men？
C.Why do people come back？
D.What does a hometown mean？
粤公网安备 44130202000953号