The natural world is colorful with humans，plants and animals showing different colors.
Human skin can be many different colors and it changes.with the sun，our feelings or our health for example.This is because of pigments（色素），which reflect light and make what the eye sees as colors.So，when we feel excited or angry，our heart can send more blood to the face and the pigments in the skin become red.This is why we have the expression that someone. "sees red"when they are angry.
Plants also have pigments.Color is important for them to live on.The bright colors of flowers catch the attention of insects（昆虫），which then carry their pollen（花粉）from one flower to another.Bees can see colors we cannot，and they follow these to the inside of the flower.Without bees visiting flowers in this way，many plants would die out.
Animals also use color for their own need.They protect themselves with different colors so as not to be seen by predators.The snowshoe hare for example，a type of wild rabbit，changes color with seasons for this reason.During summer it is a brown color，and in winter it is white so that it can hide in the snow.However，some animals use color as a warning to make predators stay away.Bright colors such as yellow and red are often used in this way.Nature，however，is very clever，and predators also use colors to attract（吸引）the animals they feed on..
So，we can see that there may be many different reasons and uses for colors in the natural world.Some uses of color in nature remain unknown；but one thing is for sure，color not only makes our planet beautiful but it is also necessary for our planet to live on.
（1）Paragraph 2 mainly tells us that is/are the cause that makes human skin change color.
A.feelings
B.pigments
C.Blood
D.sunshine
（2）According to Paragraph 3，plants can use to attract insects.
A.leaves
B.fruits
C.pollen
D.color
（3）The underlined word"predators""in Paragraph 4 refers to animals which .
A.hide in secret places
B.kill other animals for food
C.change color with the sun
D.protect themselves from danger
（4）What is the main purpose of the passage？
A.To describe animals' ways of life.
B.To encourage us to study color in nature.
C.To introduce the uses of colors for life on earth.
D.To explain the importance of protecting our planet.
"Mom!I found one!I found a rock!"
I heard those words again and again last summer as I sat by the window，which faces a park in the small town where I live.
The Kindness Rocks Project，which was started a few years ago by a mom in Massachusetts，has spread around the world.Kids，families，and people of all ages are taking part in painting rocks，hiding rocks，and finding painted rocks all over the place.Some post photos of the rocks on social media （传媒），and others simply move the rocks for someone else to find.Some take the rocks home and then replace them with new ones that they created and hid.
Nine﹣year﹣old twins Harry and Hannah DeVrieze have painted hundreds of rocks with their parents.Most evenings，the family and their small dog walk around with a wagon （运货车） full of rocks that they hide as they walk.
"It's a fun family activity，" Hannah says.
"We will do it in the winter too，" Hannah says.
Ben Burinsky，age nine，and his brother，Luke，age seven，were visiting relatives （亲戚） when they found their first painted rock in a park.They were so excited that they went home and painted their own rocks，then hid them for others to find.
"My boys loved finding the rock in the park，especially since it was a superhero，" their mother，Judy Burinsky，says. "I love how something so small can bring a smile to my children's faces.In return，they learn the value of giving back to others."
Kadyn Kinney，age nine，and his seven﹣year﹣old brother，Jayce，have also painted many rocks.They love to hide rocks and look for rocks with their mom and dad.When their grandmother visited，they gave her painted rocks to take home and hide in the Florida town where she lives.When asked how many rocks he has painted so far，Jayce says， "Trust me!I've painted more than 30."
（1）The activity was started in .
A.New York
B.Florida
C.Massachusetts
（2）How old is Harry？
A.7.
B.9.
C.10.
（3）What does the underlined word "value" in Paragraph 8 mean？
A.价值.
B.价格.
C.代价.
（4）Jayce has painted more than rocks.
A.14
B.18
C.30
（5）What is the main idea of the passage？
A.The kind people.
B.The Kindness Rocks Project.
C.The painted rocks.
Ever wondered why your virtual（虚拟的）home helper doesn't understand your questions？Or why your navigation app took you on the side street instead of the highway？In a study published April 21st in the journal Science，Italian researchers，Arianna Pipitone and Antonio Chella，designed a robot that "thinks out loud".
To explore how inner speech might influence a robot's actions，the researchers built a robot called Pepper that speaks to itself.It has the ability to reason and think.They then asked people to set the dinner table with Pepper according to etiquette（礼仪）rules.In one experiment，the user asked Pepper to lay the napkin at the wrong place，going against the rules.Pepper started asking itself a series of self﹣directed questions and concluded that the user might be mistaken.To be sure，Pepper confirmed the user's order，which led to further inner speech.
"Ehm，this situation troubles me.I would never break the rules，but I can't make the user unhappy，so I'm doing what he wants，" Pepper said to itself，laying the napkin where it was required to be.Through Pepper's inner voice，the user can learn Pepper was facing a difficult situation and solved it by prioritizingthe user's order.
Comparing Pepper's actions with and without inner speech，Pipitone and Chella discovered the robot had a higher task﹣completion rate when having self﹣dialogue.
However，some people find the robot spends more time completing tasks when it talks to itself.The robot's inner speech is also limited to the knowledge that researchers gave it.Pepper's designers still say their work provides a framework（构架）to further explore how self﹣dialogue can help robots focus，plan，and learn. "In some ways，we are creating a generational（世代的）robot that likes to chat.From navigation apps and the camera on your phone to medical robots in the operation rooms，machines and computers alike can take advantage of this chatty feature，" says Chella.
（1）Why does the writer ask two questions at the very beginning of the passage？
| A． |
To draw the reader's attention to the topic. |
| B． |
To show the writer likes electronic products |
| C． |
To tell the reader about the history of robots. |
| D． |
To prove the writer often faces trouble in life. |
（2）Why was Pepper asked to lay the napkin at the wrong place？
| A． |
To see how much time Pepper spent laying the napkin. |
| B． |
To confirm how popular Pepper was among its users. |
| C． |
To test how many etiquette rules Pepper remembered. |
| D． |
To study how self﹣dialogue might influence Pepper's actions. |
（3）What does the underlined word "prioritizing" in Paragraph 3 mean？
| A． |
repeating. |
| B． |
dealing with…first. |
| C． |
going against. |
| D． |
complaining about. |
（4）What can we infer from the passage？
| A． |
The designers are proud of their work about Pepper. |
| B． |
Pepper has already been in use in the operation rooms. |
| C． |
Pepper's inner speech depends on its user's communication skills. |
| D． |
With or without inner speech，Pepper could complete a task equally well. |
Florence Nightingale was born on May 12th，1820.In 1851 she trained as a nurse.Two years later she went to a British military（军事的）hospital so that she could help British soldiers.Before she arrived，many soldiers died in the hospital because it was dirty.Nightingale worked hard to make the hospital clean and stop soldiers dying.When she returned to England in1856，she was a national heroine.Nightingale wrote two books about nursing and she also started a school to train nurses.She died in London on August 13th，1910，when she was 90 years old.
（1）What was Florence Nightingale's job？
A.A nurse.
B.A soldier.
C.An artist.
（2）How many books did she write？
A.One.
B.Two.
C.Three.
（3）Which of the following is NOT true about the article？
A.In 1851 she went to a British military hospital.
B.In 1856 she returned to England.
C.In 1910 she died in London.
（4）What would be the best title for the article？
A.A British Soldier.
B.A British Military Hospital.
C.A Famous British Nurse.
"Oh，boys，don't throw stones at the poor bird，" said an old grey﹣headed man.
"Sir，" said a little one，"she makes such a loud noise that we can't bear her."
"I am afraid the stone will rebound （反弹） and hurt you as long as you live!"
"Rebound!We don't understand you，sir!"
"Well，I will tell you a true story.
"Fifty years ago，I liked throwing stones because I had no other boy to play with and I became very skillful.One day I went to work for an old couple who were very friendly to everybody，even to the birds.And the birds seemed to love the old couple，too.For seven years a bird had come and built her nest （鸟巢） in the same place.She and her mate had just returned on the day I went to work and the old couple welcomed them happily.During the day，I thought I would try my skill upon her.Suddenly the bird flew to a tree near me.I found a nice stone，and I threw it with my best skill.It hit the bird on the head and she dropped dead！
"I was sorry the moment I saw her fall off the tree.But it was too late.All day long her mate flew about，and chirped （发啁啾声） so sadly that he made my heart ache..I said nothing to the old couple but one of their grandchildren told them about it.Though the old couple never said a word to me，I knew that they were very sad.I could never look them in the eye and tell them how sorry I was.They have been dead for many，many years，and so has the poor bird.But don't you see how that stone rebounded，and hit me？For fifty years I have still remembered it though I have never spoken of it before.But if what I have told you will stop you，I will be happy."
The boys at once dropped the stones in their hands and the bird had no more trouble from them.
（1）Why did the boy throw stones at the bird according to what the little boy said？
A.Because they wanted to catch the bird.
B.Because they thought the bird was noisy.
C.Because they wanted to practice their skills.
D.Because they thought throwing stones was fun.
（2）Which word can best describe the old couple？
A.Kind.
B.Strict.
C.Proud.
D.Funny.
（3）The underlined word "They" refers to .
A.the birds
B.the old couple
C.the boys
D.the grandchildren
（4）How did the old man stop the boys from throwing stones at the bird？
A.By driving away the bird.
B.By taking away their stones.
C.By playing jokes on the boys.
D.By telling the boys his own story.
（5）What can we learn from the text？
A.Don't hurt others，or you will hurt yourself.
B.Try to save others and you will feel happier.
C.Keep practicing and you will be very skillful.
D.Don't waste time，or you will achieve nothing.
Leo was a small and thin boy living in a small village.Some boys in the village often bulliedhim and Leo was afraid.
One day，an old wizard （魔法师） went by the village and saw Leo being bullied.So when the bad boys left，he gave Leo a lion's tail. "It's a magic tail." the wizard said， "When someone wears it and acts bravely.he or she will um into a strong lion."" Leo hung the lion's tail behind his body and decided to leach the bed boys a lesson.
But when the boys came，Leo was afraid and tried to run away.Yet they caught him.Suddenly，Leo showed the tail and remembered what the wizard had said.He became brave.He looked them in the eyes and said he would make them regret doing that.Leo felt the goose bumps （鸡皮疙瘩） all over his body， "This means that I am turning into a lion." he thought.The boys ran away in fear.Leo wanted to catch them，but he found his legs were as short as before.
When the wizard saw it，he came to Leo.Leo was very happy，though a little disappointed because his lion body had lasted only a short time.
"You are great." said the wizard， "But have you ever seen a lion fighting？No one fights with lions because they know how brave and strong lions are." Yes.Leo had never seen a lion fighting.He suddenly understood that he didn't really turn into a lion and that what really worked was his brave heart.
Choose the right answer according to the passage.
（1）What's probably the meaning of the underlined word "bullied" in paragraph one？
| A． |
Hurt. |
| B． |
Missed. |
| C． |
Changed. |
| D． |
Encouraged. |
（2）What can we learn about Leo from the passage？
| A． |
He was a small and fat boy. |
| B． |
He got a tail from a wizard. |
| C． |
He got on well with everyone. |
| D． |
He was made fun of because of his tail. |
（3）Which of the following is right？
| A． |
Leo caught the bad boys after he became a lion. |
| B． |
The wizard fought with Leo against the bad boys. |
| C． |
The tail made Leo brave to fight against the bad boys. |
| D． |
The bad boys had courage to fight against a real lion. |
（4）How did Leo feel after the bad boys ran away？
| A． |
Tired but happy. |
| B． |
Worried but surprised. |
| C． |
Sad but relaxed. |
| D． |
Disappointed but pleased. |
（5）What's the best title of the passage？
| A． |
An old wizard. |
| B． |
A small boy. |
| C． |
A magic tail. |
| D． |
A strong lion. |
The Youth Climate Summit（气候峰会） a week﹣long festival of climate action for primary and middle schools in the UK，starts on 9 November.It aims to create a fairer，more environmental world and make promises that will help the planet.Climate change is the long﹣term changes in the world's weather patterns that are mostly caused by human activity. "Unlike world leaders， "say the summit's organizers. "young people are refusing to let it drop off the plan. "
Each day has a topic，which includes food and fashion，looking at how humans harm the environment and how to save the planet.Organizations are leading some on line activities.For example，the Marine Conservation Society is hosting meetings on protecting sea fish.Separately，the environmental organization Greenpeace is running a workshop on how to turn worn﹣out clothing into something new and wearable.
The summit will finish on 13 November，when youth ambassadors（大使）wants schools to stop paper waste.Max，another 16﹣year﹣old ambassador wants schools to organize more trips and activities that get students outside to experience the beauty of nature.As part of the summit，hundreds of schools across the country are signing up to the Let's Go Zero activity，aiming to become carbon﹣zero（零碳的）by 2030.
Carbon﹣zero schools are ones that promise to stop emitting carbon in seven areas，including where they get their food and how they use water and recycle their waste.The activity is run by Ashden，a charity working towards climate solutions.Ashden hopes that schools will be able to help each other by sharing ideas and methods.It is also calling on the Government to back the promise.Head over to transform﹣our﹣world.org where you can find out more.
（1）The writer develops the first sentence in Paragraph 2 mainly by .
| A． |
telling stories |
| B． |
comparing facts |
| C． |
giving examples |
| D． |
listing numbers |
（2）Max advises schools to .
| A． |
recycle and reuse old clothes |
| B． |
prevent students from wasting paper |
| C． |
have meetings on saving endangered sea fish |
| D． |
provide more chances for students to enjoy the nature |
（3）The underlined word " emitting" in Paragraph 4 is the closest in meaning to" ".
| A． |
using up |
| B． |
taking in |
| C． |
sending out |
| D． |
cutting down |
（4）The purpose of the passage is mainly to .
| A． |
explain the problems with climate change |
| B． |
develop children's ability to solve social problems |
| C． |
introduce the environmental organizations to schools |
| D． |
encourage young people to care more about climate change |
Most children are taught the virtue （美德） of honesty from stories.The well﹣known story of Pinocchio teaches the importance of telling the truth.Every time Pinocchio lies，his nose grows longer and longer.Another story is about the boy who"cried wolf." In the end，he loses all his sheep and the trust of his fellow villagers because he tells lies many times.These types of stories show children that "honesty is the best policy." Still，if thisis the case，then why do so many people lie？The fact is that people lie for many reasons.
One reason people lie is to minimize （减少） a mistake.While it is true that everyone does something wrong from time to time，some people do not have the courage to admit their errors （错误） because they are afraid they will be blamed.For example，students might lie to their teachers about unfinished homework.They might say that they left the work at home when，in fact，they did not do the work at all.These students do not want to get in trouble or seem irresponsible，so they make up an excuse﹣ a lie﹣ to save face.
Another reason for lying has to do with self﹣protection.Parents，particularly those with young children，may teach their children to use this type of"protective" lie in certain circumstances （状况）.What should children do if a stranger calls while the parents are out？Many parents teach their children to explain that their mother and father are too busy to come to the phone at that time.In this situation，protective lying can mean greater safety.
People lie for many reasons，both good and bad.Lying to keep the peace or to stay safe can have positive results.However，lying to stay out of trouble can lead to more trouble in the end.Understanding the motives behind the impulse （冲动） to lie might minimize this habit of lying.
（1）What does the underlined word"this" refer to in the passage？
| A． |
Honesty is the best policy. |
| B． |
The well﹣known story of Pinocchio. |
| C． |
The story of the boy who"cried wolf". |
（2）Why do some children lie to their teachers？
| A． |
Because they like making up an excuse. |
| B． |
Because they have left the homework at home. |
| C． |
Because they are afraid to be blamed at school. |
（3）How does the writer explain why people tell lies？
| A． |
By asking questions. |
| B． |
By giving examples. |
| C． |
By showing the results. |
（4）What is the correct structure of the passage？ （P﹣paragraph 1）
| A． |
|
| B． |
|
| C． |
|
（5）What's the best title for the passage？
| A． |
The Truth behind Lying. |
| B． |
The Types of Lies. |
| C． |
The Habit of Lying. |
Historically，most cars have run on gasoline（汽油），but that may change in the future：cars can also run on other liquid fuels（液体燃料）and electricity.
Gasoline is from oil.The energy in gasoline comes from hydrocarbons（碳氢化合物）.Gasoline provides great power for cars.However，it causes environmental problems，like air pollution and temperature rise.So gasoline can't be the best fuel.
Another choice is electricity.Electricity cars can be as efficient（效能好的）as cars using gasoline，And they produce less pollution.But electric cars themselves are more expensive.Good news is that the cost has been lower and there are more and more places for the cars to get electricity ever since 2010.
The other choices are other liquid fuels.Many of these can be stored in the same places as gasoline，and used in the same cars.They can also be friendly to the environment.
One way to make such fuels is to get CO 2from the air and put it in water.Through chemical reaction，hydrocarbons can be created.However，these fuels take up more space.
Another way is to make such fuels from plants which take in carbon from the air.These fuels are greener in use.But not all of them can be as efficient as gasoline.
For a fuel to be the best，people have to be able to afford it.Unluckily，almost every green technology is more expensive than that of using gasoline.Governments and car producers are doing everything they car to cut down the costs.In the end，the best fuel will be both affordable for car users and green for our planet.
（1）Gasoline provides cars with .
| A． |
great power |
| B． |
fresh air |
| C． |
clean water |
| D． |
enough space |
（2）According to Paragraph 3，we can infer that electric cars .
| A． |
produce less pollution |
| B． |
will become more and more expensive |
| C． |
will become more popular |
| D． |
are more efficient than those using gasoline |
（3）The structure of the passage may be .
| A． |
|
| B． |
|
| C． |
|
| D． |
|
（4）What would be the best title for the passage？
| A． |
How Do We Protect Our Planet？ |
| B． |
What Are the Fuels' Differences？ |
| C． |
What Is the Best Fuel for Cars？ |
| D． |
How Do We Make Fuels for Cars？ |
The first emperor of China，Qin Shihuang，completed a huge number of projects during his rule.Between 221 and 210 B.C.，he started the building of the Great Wall.The emperor also ordered the building of a huge army of life﹣sized terracotta soldiers（士兵）.These，he hoped，would protect his tomb after his death.
Lost in Time
The soldiers in Xi'an's terracotta museum are today light brown，but they weren't always.They began as an army of red，blue，yellow，green，white，and purple.Sadly，most of the colors did not last to the present day.After being exposed（暴露）to air during digging，the coating under the paint began to fall off.The paint disappeared in less time than it takes to boil an egg，taking away with it important pieces of history.
New Technology
Now new technology is starting to show the army's true colors.Archeologists（考古学家）have recently discovered an area with more than a hundred soldiers.Many of these still have their painted features，including black hair，pink faces，and black or brown eyes.Chinese and German researchers have developed a chemical liquid（液体）to help save the soldiers' colors.After finding a soldier or another art piece，archeologists put the liquid on it. They then cover it in plastic.
Back to Life
Archeologists are also finding colors in the dirt around the soldiers.It's important not to do anything with the dirt，so the colors won't be lost. "We are treating the dirt as an art piece， "says Rong Bo，the museum's leading archeologist.The next challenge，says Rong Bo，is to find a way to use the colors onto the army﹣again.Once that happens，artists can bring Emperor Qin's army back to its full，bright colors.
（1）What is the passage mainly about？
A.The death of Emperor Qin Shihuang.
B.How the terracotta army was colored.
C.The true colors of the terracotta soldiers.
D.How the soldiers lived during Qin Dynasty.
（2）What does the underlined word "They" in the passage refer to？
A.Archeologists.
B.Artists.
C.Researchers.
D.Soldier.
（3）Which statement would Rong Bo probably agree？
A.The soldiers should stay in their present，brown color.
B.People should try to bring back the army's bright colors.
C.Archeologists can only guess at the soldiers' true colors.
D.Artists should be able to paint the soldiers in colors they want.
You may know the English letters A， B and C． But do you know there are people called ABCs？ You may like eating bananas．But do you know there are such people with the name of "banana persons"？ Are these people from "another planet （星球）"？ No． They are just Chinese people like you and me．
ABC means American﹣born﹣Chinese． An ABC is a Chinese， but was born in the United States． Sometimes， people call an ABC a "banana person"． A banana is yellow outside and white inside． So， a "banana person" is white inside ﹣﹣ thinking like a westerner and yellow outside ﹣﹣ looking like a Chinese．
Do you know why？ Usually， ABCs know little about China or Chinese language． Most of them don't speak Chinese． Also， they are not interested in Chinese politics （政治）． But if ABCs can't speak Chinese． can we still call them Chinese people？ Yes， of course． They are Chinese． They are overseas （海外的） Chinese． These people may be citizens （公民） of other countries like the US， Canada or Singapore． But they have Chinese blood． Their parents， grandparents or even great﹣grandparents were from China． They all have black eyes and black hair． But they are not Chinese citizens． They are not people of China． For example， we all know the famous scientist C．N． Yang （杨振宁）． He got the Nobel Prize in Physics in 1957． Chinese people love him． But he is an American citizen．
（1）"ABC" in this passage means " "．
| A． |
a kind of banana |
| B． |
three English letters |
| C． |
American﹣born﹣Chinese |
| D． |
Chinese﹣born﹣America |
（2）Chinese born in western countries are called "banana persons" because .
| A． |
their bodies are white inside but yellow outside |
| B． |
they think like westerners but look like Chinese |
| C． |
they were born in China but go to study in America |
| D． |
they were born in America but work in China |
（3）The underlined word "blood" may probably mean in the passage．
| A． |
血统 |
| B． |
洪水 |
| C． |
血样 |
| D． |
流血 |
（4）C． N． Yang is mentioned here to show that ．
| A． |
American Chinese are great |
| B． |
Chinese people can win Nobel Prize |
| C． |
American Chinese aren't Chinese citizens |
| D． |
we don't like him |
（5）This passage mainly talks about ．
| A． |
Chinese |
| B． |
the Nobel Prize |
| C． |
the story ofC.N．Yang |
| D． |
the meaning of "ABC" |
Nowadays， phone calls and messages help us get in touch with others． It means that we seldom write letters now． But a TV show， Letters Alive （《见字如面》）， is bringing back this old habit．
Letters Alive invites famous actors and actresses， but there are no funny jokes or competitions． It's just one person walking up to a microphone and reading a letter． The letters were written by people from different times in history． For example， in one period， they read a letter written by famous writer Xiao Hong to her younger brother in 1941． The letter shows that Xiao Hong missed her brother so much and had great hopes for his future．
"Every letter opens another world for us，" according to Guan Zhangwen， the director of the TV show． "We can also touch the heart of the writers'．" Since its first period on Dec． 5， Letters Alive has been widely praised． Many audiences （观众） said that it had provided a breath of fresh air to today's TV shows．
Besides Letters Alive， some other cultural TV shows have also been well received by Chinese audiences． Chinese Poetry Conference is a traditional Chinese poetry competition． And Readers invites people to read poems and articles they like or wrote． It suggests that cultural values and true feelings are becoming our interest．
（1）Letters Alive， a TV show， invites famous people to ．
| A． |
tell audiences jokes |
| B． |
read and share letters |
| C． |
walk up to a microphone to sing |
| D． |
take part in different competitions |
（2）According to the passage， which sentence is RIGHT？
| A． |
Xiao Hong missed her brother but had no hopes for his future． |
| B． |
The heart of the writers' can be touched by reading letters． |
| C． |
Letters Alive is not popular enough to audiences． |
| D． |
Chinese Poetry Conference invites people to read poems． |
（3）How many cultural TV shows are there in the passage？
| A． |
One． |
| B． |
Two． |
| C． |
Three． |
| D． |
Four． |
（4）Chinese audiences these cultural TV shows．
| A． |
like |
| B． |
dislike |
| C． |
show no interest in |
| D． |
doubt about |
（5）Which is the best title for the passage？
| A． |
Phones Have Taken the Place of Letters |
| B． |
Welcome to Our Cultural TV Shows |
| C． |
Letters Make Us Communicate |
| D． |
Cultural TV Shows Are Becoming Popular |
I remember when I was growing up， my mom always said， "Half the fun of doing anything is sharing it with others．" It's so true． Friends allow us to enjoy the taste of our success and our joys and comfort us in our challenging moments． They provide a mirror for us to learn more about ourselves． I have always looked at friends as the family members． They enrich our lives． As Robert Louis Steven once said， "A ① friend is a present which you give yourself．"
To be a good friend， ② 成为一个年的听众是很重要的．Hear what your friend says first rather than making conclusions （结论） quickly． Sometimes it is useful to repeat their words back to them， it can help them to realize whether their words were what they wanted to say．
Patience is also important in being a good friend． You know the old golden rule． "Care for others in the way you would like them to care for you．" The support of a friend during a difficult time could make a difference between success and failure． ③ Encouragement is the best gift that can change a person's life ．
We should choose our friends carefully， because they can have a huge influence in our life． As someone told me "Your friends are like the button （按钮） on a lift． ④ Sometimes they will take you up ， sometimes they will take you down ．"
（1）请在①处填入一个恰当的单词．
（2）请将②处划线句子翻译成英语．
（3）请将③处划线句子翻译成汉语．
（4）请将④处划线句子用合适的连词改为一个同义句．（每空一词）
They will take you up down．
（5）Why should we choose our friends carefully？
仔细阅读广告内容选择最佳答案．
（1） are not in the sale．
| A． |
Fridges |
| B． |
TV sets |
| C． |
Smart phones |
| D． |
Cameras |
（2）The big sale can last ．
| A． |
one week |
| B． |
two weeks |
| C． |
three weeks |
| D． |
four weeks |
（3）You can buy at half price．
| A． |
everything |
| B． |
TV sets |
| C． |
smart phones |
| D． |
cameras |
（4）The biggest saving is off．
| A． |
25% |
| B． |
30% |
| C． |
50% |
| D． |
80% |
（5）A camera is normally ¥4000， in the sale it is ．
| A． |
¥1000 |
| B． |
¥1200 |
| C． |
¥2000 |
| D． |
¥3000 |
Can plants talk？Modern research has found something amazing：they do communicate with each other.
It has been known for some time that plants use chemicals to communicate with each other.This happens when a plant gets attacked by insects.The plant gives out chemicals from the leaves that are being eaten.This is like a warning，or a call for help："I'm being attacked!"When another plant gets the chemicals，it starts to give out its own，different chemicals.Some of these chemicals drive insects away.Others attract the wasps （黄蜂；蜜蜂）!The wasps kill the insects that are eating the plants.Scientists hope to learn more about this plant warning system，so that we can use it to grow more crops.
More surprisingly，plants also use sound to communicate.People can't hear these sounds，but plants are making them.Some plants make noises with their roots.Corn and chili plants do this.Some trees make clicking noises when there is not enough water.
Most surprisingly of all，plants have an amazing system of communication that can link nearly every plant in a forest.Scientists call this system the "wood wide web".The wood wide web is linked underground by fungi （霉菌）.It links the roots of different plants to each other.It is in some ways similar to the Internet we use.Using the wood wide web，plants can share information and even food with each other.However，it may lead to bad effects.Plants may use it to steal food from each other，or spread chemicals to attack other plants.Perhaps one day scientists will learn how to create a "firewall" to help prevent these attacks within the wood wide web.
Scientists are learning more every day about the secret ways in which plants talk to each other.Maybe one day we will know enough about plant communication to be able to "talk" with them ourselves.
（1）What will plants do when they are attacked by insects？
A.They will kill the insects by themselves.
B.They will control the wasps to kill the insects.
C.They will send out signals to ask for help.
D.They will produce chemicals as a warning or a call for help.
（2）How are the wood wide web linked by fungi？
A.By making noises with their roots.
B.By connecting the roots of different plants to each other.
C.By sharing food and information with each other.
D.By spreading chemicals to each other.
（3）What is the writer's intention of the last paragraph？
A.To give people hope for further studies.
B.To praise scientists for their great achievements.
C.To call on people to protect the plants on Earth.
D.To inspire people to communicate with plants.
（4）What is the structure of the passage？
A.
B.
C.
D.
（5）Which is the best title for the passage？
A.The Secret Language of Plants
B.The Study about the Plant Warning System
C.The Plants that Give Warnings
D.Why Scientists Do Research about Plants
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