Once a great boxer(拳击手),Tom Black, went to a restaurant for supper. He took off his coat and left it at the door, but he was afraid that somebody would take it away. So he took out a piece of paper and wrote on it,“The great boxer, Tom Black, has left his coat here.He’ll be back in a few minutes.”He put the paper on his coat and went to have his dinner. When he returned, however, his coat was not there. He just found a piece of paper in its place. It said,“A great runner has taken away you coat, and he will never come back again.”
根据短文，从题中所级的A、B、C、D四个选项中选出最佳答案Who was Tom Black?
| A．A great runner. | B．A great boxer. |
| C．A P.E. teacher. | D．A great thinker. |
This story happened ______.
| A．in the morning | B．in the afternoon |
| C．in the evening | D．at noon |
He wrote his name on the paper and put it on the coat because he _____.
| A．wanted all the people to know his name |
| B．wanted to be famous |
| C．was afraid other people would take his coat away |
| D．wanted to show he was a great boxer |
What happened at last?
| A．His coat was still there. | B．Nobody saw the paper. |
| C．He found his coat. | D．Someone took his coat. |
Who wrote the second piece of paper?
| A．The thief(小偷). | B．Tom Black. |
| C．A waiter. | D．Tom’s a friend. |
One day a dentist was starting his morning work. Suddenly a man ran in. His face was red and he could only say “Quick! Quick!” The dentist thought he must be very ill. His assistant helped to make the poor man sit in a chair. The dentist gave the man some medicine to make him sleep. Then, he looked into the man’s mouth and pulled out all the bad teeth. As soon as the man woke up, he said in a low voice, “Quick, doctor, quick.”
“It’s all right now,” the dentist told him. “It’s over.”
“You don’t understand,” said the man, “I came to tell you your house is on fire.”The story took place (发生) _______.
| A．in the morning | B．in the afternoon |
| C．in the evening | D．at night |
When the man ran in, the dentist thought he must be _______.
| A．over | B．ill | C．all right | D．rich |
The man _______ after he took some medicine.
| A．began to work | B．began to cry | C．went home | D．went to sleep |
The dentist pulled _______ out of the man’s mouth.
| A．a tooth | B．a bad tooth |
| C．all the bad teeth | D．all the teeth |
The man ran in _______.
| A．because he was ill |
| B．because he wanted to sleep |
| C．to tell the dentist that he was all right |
| D．to tell the dentist that his house was on fire |
Many scientist once believed that physical similarities between identical twins are genetic（基因的），while their personalities，intelligence and other differences between them are an effect of their environment.Now scientists are discovering that the boundaries（界限）between genes and environment are not so clear.
Twins Jim Springer and Jim Lewis were adopted（领养）as babies and raised by different couples.When the Jims finally met at age 39，they discovered they had plenty in common.Both were six feet tall，180 pounds.They had the same smile and the same voice.When scientist Thomas Bouchard Jr.invited the Jim twins to his lab，people there found it very hard to tell them apart.
But the similarities didn't stop at the physical.They'd both had dogs named Toy.They had both married women named Linda and then their marriage broke up.They'd both been policemen，enjoyed music，and left love notes around the house for their wives.They had so much in common，it seemed unlikely these were just coincidences （巧合）.
The Jim twins were just one of 137 sets of separated twins.Bouchard tested.When they compared the twins' IQ scores，Bouchard and his team reached a surprising conclusion（结论）.They concluded that intelligence was mostly connected to genes rather than to training or education.It seemed the differences in family and environment had little effect.
However，genes can't control everything，argues geneticist Danielle Reed，who also studies twins.Reed's research shows that though nothing can truly change our DNA，environmental differences that a child experiences before birth and in their first year can sometimes affect the way the DNA behaves，making even identical twins into very different people. "What I like to say is that Mother Nature writes some things in pencil and some things in pen， "She explains. "Things written in pen you can't change.That's DNA.But things written in pencil you can. "
（1）How many physical similarities between the Jim twins are mentioned？
| A． |
2. |
| B． |
3. |
| C． |
4. |
| D． |
5. |
（2）What did Bouchard's study find about the twins？
| A． |
Each seemed to be as tall as their twin. |
| B． |
Each had the same hobby as their twin. |
| C． |
Each had almost the same ability as their twin. |
| D． |
Each had about the same IQ level as their twin. |
（3）What is Reed's opinion about genes and environment？
| A． |
Only DNA has an effect on our development. |
| B． |
Environment could possibly change some things about us. |
| C． |
There are no boundaries between genes and environment. |
| D． |
Environmental differences can sometimes change our DNA． |
（4）What is the passage mainly about？
| A． |
The way the DNA behaves. |
| B． |
The similarities between the Jim twins. |
| C． |
The connection between intelligence and families. |
| D． |
The effects of genes on personality and intelligence. |
Hi, I’m Liu Ying. This is my school. It’s big and beautiful. There are twenty classes. There are nine hundred students in my school. There are four beautiful gardens in it. There is a building in my school. On the first floor, there are two offices and a hall. There are six classrooms on the first floor, too. On the second floor, there are fourteen classrooms. There are two toilets on the second floor. There is a big library and some reading rooms in my school, too.How many classes are there in the school?
| A．Ten | B．Fifteen | C．Twenty | D．fifty |
Is there a building in the school?
| A．No, there isn’t | B．Yes, there is | C．Yes, there are | D．No, there aren’t. |
Are there any classrooms on the first floor?
| A．Yes, there are | B．There is one | C．No, there aren’t | D．Only two |
How many gardens are there in it?
| A．Three | B．Four | C．One | D．Five |
There are _________ students in the school.
| A．one hundred | B．nine hundred | C．eight hundred | D．two hundred |
阅读理解
When July comes, children know they’ll have the final exams and the school year will end soon. Boys and girls will have a nearly two months’ holiday, and they’ll leave school by train or by car to return home to see their fathers and mothers.
The summer holiday is the best time of the year for most students. The weather is good, so they can spend most of their time playing outside .If one lives in the country, he can go on a trip into the woods or in the fields. If one lives in a big city, he can go to a park to play.
The best place for a summer holiday is the seaside. Some children are lucky enough to live near the sea. But for the others who do not, if they have the chance to stay at one of the big seaside towns for a week or two, they will talk about it all the following school year.
Now, what makes children like the seaside so much? I think it is the sand, the sea and the sun, not anything else. Of course, there are lots of new things to see, nice things to eat and interesting things to do. But the feeling of the sand under their feet, the salt water on their skin, and the warm sun on their backs make them happier.Every year, school children have the final exams in ____, and the exam means the school year will end.
| A．May | B．January | C．July | D．December |
According to the passage, if a child comes from a big city, he can often ____ in the summer holidays.
| A．stay at home | B．go on a trip to the woods |
| C．go on a trip in the fields | D．go to a park to play |
It’s the best way for children to go to the ____ to spend their summer holidays.
| A．park | B．seaside | C．city | D．country |
____ make children like the seaside so much?
| A．The beautiful parks | B．The new things |
| C．The sand, the sea and the sun | D．The people near the sea |
Which of the following is Not true according to the passage?
| A．After the final exams ,school children will stay at school for extra classes. |
| B．The summer holidays is a good time to go out for a trip. |
| C．The children from the countryside can have a good time in the woods in the summer holiday. |
| D．If some children go on a trip to the seaside, they will have many things to talk about. |
Boys and girls, let’s begin our English class now. This time I want to talk about my family. Then I want you to say something about your families.
There are seven people in my family. They are my parents, my two sisters, my brother, his wife (妻子)and I. In England, a family like this is a big one. My father has a factory（工厂）. It isn’t very big. It makes all kinds of boats. My brother is a doctor. He works in a hospital(医院). His wife works in a hospital, too. She is a nurse. My two sisters are students. One wants to be a teacher. She studies hard and well. The other likes singing very much and can sing very well. So she wants to be a singer(歌手). I’m now in China teaching English and learning Chinese. My mother stays at home. Can you guess (猜测)what she does at home? Yes, she does housework. She is a housewife.Where do I come from?
| A．China | B．America | C．England | D．Canada |
Where am I now ?
| A．In China | B．In America | C．In England | D．In Canada |
Who works in a school in my family?
| A．One of my sisters | B．I | C．My father | D．My brother |
My brother and his wife work _________.
| A．as teachers | B．as nurses | C．as doctors | D．in a hospital |
In Chinese “ housewife” means_________ .
| A．干家务活的人 | B．在家的妻子 | C．家庭主妇 | D．保姆 |
How much sleep do we need? We are all different. Some people need only three hours of sleep a night. Others need ten hours of sleep a night. Most Americans sleep an average (平均值) of seven to eight hours a night. After the age of fifty the average sleep time goes down to 6.5 hours a night.
Most people have a bad night when they can not sleep. About one in three Americans has a problem with sleep. Many of these people can not fall sleep. This problem is called (叫做) insomnia. This is not a new problem. Many famous people in history had insomnia. Some of these people had special (特别的) ideas to another to make them sleep. Benjaming Franklin, the famous stateman (政治家) and inventor (发明家)，had four beds. He moved from one to another to fall asleep. King Lousis XIV of France had 13 beds and hoped that he could fall asleep in one of them. Mark Twain, the famous American writer, had a different way. He lay on his side on the end of the bed!.Most American people need________ hours of sleep a night.
| A．3 | B．10 | C．7-8 | D．5-6 |
People need_________ sleep as they get older.
| A．more | B．less（更少的） | C．no | D．little |
“The problem is called insomnia.” Here “insomnia” means_________.
| A．going to sleep easily | B．sleep at daytime |
| C．the ways of sleep | D．not being able to(能够)go to sleep |
Mark Twain lay on his side on the end of the bed because he_________.
| A．was an old man | B．thought it was easy to go sleep |
| C．was a famous writer | D．didn’t have much room to sleep in |
The passage is mainly (主要地) talking about_________.
| A．sleep | B．insomnia |
| C．how to go to bed | D．the famous person |
Good morning, class!
We know that there are too many net bars around us. The Internet is popular and it makes our lives colorful. Many of us like going online very much because we can learn how to use the computer and get more information from the Internet. We can learn English. We can read some good newspapers and magazines. It can make us clever in playing computer games. We can send E-mails to our friends quickly. We can chat(聊天) freely online with our friends. It can help us get in touch with people from all over the world.
But some students spend too much time in playing computer game and some stay in the net bars all day and all night. Teenagers even get to have boyfriends or girlfriends online. They write too many letters to each other. It takes them to much time to chat online so they do worse and worse in their lessons and they don’t study well any more. I think we mustn’t get online when it is time for us to study. We can do it in summer or winter holidays. We should get online with adults(成人)--our teacher or parents.
At the same time, if we have lots of free time, we can do some out-of-class activities at school. We usually have activities from 4:50 to 5:50 in the afternoon. We have different kinds of activities. If you are interested in sports, you can play basketball or football. We can go to the English Corner. We can practice talking in English there. We hope we can spend more time on our subjects or on such activities that we can learn a lot from and less time on the Internet.
Thank you for listening to me. That’s all.The short passage is about __________.
| A．going online | B．how to communicate with others |
| C．how to spend our free time | D．different kinds of activities |
The Internet can make our lives _________.
| A．helpful and important | B．enjoyable and interesting |
| C．enjoyable but expensive | D．different kinds of activities |
________ is not good.
| A．Sending E-mails | B．Reading newspapers and magazines online |
| C．going on line with adults | D．Spending all day in the net bars |
Playing computer games________.
| A．gives us lots of information | B．makes our studies worse |
| C．makes us more clever | D．is harmful to our health |
Which of the following is NOT right?
| A．There are too many net bars in the cities. |
| B．We can learn English from the Internet. |
| C．We mustn’t get online when we are studying at school. |
| D．We cannot do out-of-class activities from 4:50 to 5:50 p.m. |
| Time Day |
Monday |
Tuesday |
Wednesday |
Thursday |
Friday |
| 7:30~8:10 |
Chinese |
Maths |
Chinese |
Physics |
English |
| 8:20~9:00 |
Politics |
Geography |
English |
Maths |
Chinese |
| 9:10~9:50 |
Maths |
P.E. |
English |
Politics |
Geography |
| 10:10~10:50 |
Biology |
English |
Art |
Chinese |
Chemistry |
| 11:05~11:45 |
Physics |
Chemistry |
History |
P.E. |
Self study （自习） |
| 11:45~1:30 |
Noon break |
||||
| 1:30~2:10 |
Class meeting （班会） |
Chinese |
Maths |
English |
Maths |
| 2:25~3:05 |
English |
Music |
Physics |
Art |
P.E. |
| 3:05~3:45 |
History |
Computer |
|
Computer |
Music |
Jenny has_________ every day.
| A．Chinese and physics | B．Math and art |
| C．English and Chinese | D．history and P.E. |
She finishes her morning lessons at_______.
| A．7:30a.m. | B．11:45 a.m. | C．1:30 p.m. | D．3:45p.m. |
She has noon break ______.
| A．from 11:45 a.m. to 1:30 p.m. |
| B．from 3:05p.m. to 3:45p.m. |
| C．from 10:30 a.m. to 11:00a.m. |
| D．from 11:00a.m. to 2:00 p.m. |
She has_________ geography lessons in a week.
| A．two | B．three | C．four | D．five |
She has_______ subjects in all（共计）.
| A．seven | B．nine | C．eleven | D．thirteen |
Galileo Galilei was born in Pisa, Italy, in 1564. His father taught music while his mother cared for kids at home. The family was not wealthy, but Galileo's parents paid for him to go to school.
At first Galileo planned to become a doctor, but he changed his mind. He liked a different kind of science-physics. In Galileo's time, not much was known about how objects moved. Centuries earlier, a Greek（希腊人）named Aristotle had written down his ideas about movements, and everyone seemed to believe them. Galileo questioned those ideas and did experiments （实验）that showed how things really worked. For example, Aristotle thought that a heavier object would fall faster than a lighter one of the same size and shape. No one had ever really tested this idea. It just seemed to be true. Then Galileo came along, dropped two balls from a high tower, and discovered that they hit the ground at the same time!
In later years, Galileo became interested in how the stars and planets move. He watched the sky with a telescope（望远镜）he built himself. Once again, he saw things no one had ever seen before. For example, he saw that the moon was not smooth. Then he noticed that the sun had spots （斑点）that seemed to move. Galileo realized from his observations （观察）that the earth was moving around the sun. A Polish （波兰的）scientist named Copernicus had said this recently, but no one believed him. Galileo knew that Copernicus was right. Unluckily, Galileo's announcement got him into trouble with the Catholic Church. The Catholic Church said that the earth was at the center of the universe （宇宙）with the sun traveling around it. This was what people had long believed, but Galileo said it was untrue. So he was sent to prison（监狱）. He was soon set free, but for the rest of his life he had to stay in his house and yard.
Galileo died in 1642, but his work helped to change the world. He is sometimes called the father of modern science,because he showed us how important it is to look carefully at things and to test out ideas with experiments.
（1）Both Galileo and Copernicus believed that .
| A． |
two objects fall at the same speed |
| B． |
the moon is smooth |
| C． |
the earth goes around the sun |
| D． |
the earth is the center of the universe |
（2）We can infer from this passage that .
| A． |
Galileo's parents didn't value the education |
| B． |
all of Aristotle's ideas were proved to be wrong |
| C． |
Galileo knew Copernicus and exchanged letters with him |
| D． |
the Catholic Church was very powerful in Galileo's time |
（3）While Galileo stayed at home in his later years，he most probably .
| A． |
learned to play music |
| B． |
began to practice medicine |
| C． |
continued with his science experiments |
| D． |
wrote books on modern science |
（4）According to this passage，Galileo is called "the father of modem science" because he .
| A． |
was brave to fight against the church |
| B． |
questioned other scientists1 ideas |
| C． |
built a telescope to look at the stars and planets |
| D． |
made careful observations and tested his ideas |
（5）Which would be a good title for this passage？
| A． |
Mysteries in the universe |
| B． |
Galileo，father of modern science |
| C． |
"Is it true？ "-Different ideas in science |
| D． |
Great minds saved the world |
Dogs may be man's best friends，but for Sisu，a stray dog，the unicorn（独角兽）is his best friend.
Recently，Sisu broke into a store in North Carolina five times，trying to steal the same purple unicorn toy.But every time he got it，a salesman would find him，take the toy away and put it back on the shelf.When it turned out that Sisu wouldn't give up，the salesman had to lock the door and not let Sisu in，and then called Duplin County Animal Services for help.
Samantha Lane，the officer who answered the call，was so moved by Sisu's love for the unicorn that she bought the ＄10 toy for the dog.
"The only thing we can think of is that he came from a family that had a similar toy or had children who had one， " said Joe Newbum，a director of Duplin County Animal Services.
"It's a nice dog，" Newbum added. "He likes to play and he is very smart.He sits，stays and shakes hands.He is very polite."
And whoever is lucky enough to adopt（收养）Sisu will get two best friends for the price of one.According to the Facebook post from Duplin County Animal Services，Sisu and his stuffed animal have already had an adopter.
（1）Why did Sisu break into the store in North Carolina？
| A． |
To meet his adopter. |
| B． |
To look for some food. |
| C． |
To get the unicorn freely. |
（2）What can we learn from Joe Newbum's words？
| A． |
The family had only one child. |
| B． |
The family owned many unicorns. |
| C． |
Joe Newbum thought highly of Sisu. |
（3）What is the right order according to the story？
a.Sisu was adopted at last.
b.Sisu broke into the store.
c.The salesman called for help.
d.The officer bought Sisu the unicorn.
| A． |
b﹣d﹣a﹣c |
| B． |
b﹣c﹣d﹣a |
| C． |
c﹣d﹣b﹣a |
（4）What can be a suitable title for the text？
| A． |
Brave for Love |
| B． |
Kind to Animals |
| C． |
Proper Feeding of Dogs |
Have you ever entered a tropical rainforest（热带雨林）？Rainforests make up only a small part of the Earth's surface，about six percent，but there are more kinds of tees than any other area in the whole world.
Tropical rainforests are in Africa，Asia，Central and South America，Australia，and on the Pacific islands.The largest tropical rainforest is the Amazon（亚马逊）Rainforest in South America，which covers 1.2 billion acres，or almost five million square kilometres.The second largest rainforest is in Western Africa.
Rainforests provide us with many things.In fact，the Amazon Rainforest is the "lungs of our planet" because it produces 20%of the world's oxygen （氧气）.One fifth of the world's fresh water is also found in the Amazon Rainforest.Furthermore，one half of the world's species of animals，plants and insects live in the Earth's rainforests.80% of the food we eat first grew in the rainforest.25%of the drugs we take when we are sick are made of plants that grow only in rainforests.Some of these drugs are even used to fight and cure cancer.
There are four different levels of trees in a rainforest.The forest floor is the lowest layer full of animal life and receives the least amount of light.The under storey is the dark，cool environment under the leaves but over the ground.The canopy layer is the upper parts of most of the trees.The emergent layer contains a small number of very tall trees.
These different parts of a rainforest exist together to create an ecosystem for many animals，plants and human beings.
（1）This passage is mainly about .
A.kinds of forest
B.where rainforests are
C.facts about rainforests
D.how much oxygen rainforests make
（2）The Amazon Rainforest provides us with percent of the world's oxygen.
| A． |
twenty |
| B． |
twenty﹣five |
| C． |
fifty |
| D． |
eighty |
（3）Where can we probably find a tropical rainforest according to the passage？
| A． |
In France. |
| B． |
In China. |
| C． |
In Canada. |
| D． |
In Britain. |
（4）Which is the right picture to show four different levels of trees in a rainforest？
| A． |
|
| B． |
|
| C． |
|
| D． |
|
Several months ago，Chinese COVID﹣19 vaccines（疫苗）were put to use widely.Our government offers free vaccines to Chinese people.Here is some information you need to know.
How is the vaccine given？
It is given by injection（注射）.There are several ways to get injected.For the most common way，you are supposed to get it twice.After the first injection，you have to get the second one.
Is the vaccine bad for human bodies？
Some people are afraid that the vaccines are dangerous and may make them sick.In fact the vaccines have been tested for a long time.They won't cause any diseaseInstead，they can protect our bodies from being hurt.
Who is suitable？
Medical researches have shown that Chinese vaccines are suitable for most people.And people aged 18 to 59 would be the first ones to get injection.Our government expects people over 60 who are in good health to get injected as well.You'd better ask doctors for advice at first.
Should we still wear a face mask？
Yes.It takes a few weeks or the body to build the ability to fight the COVID﹣19 after injection.Sometimes the vaccines might not work well in the body.So it's best to keep wearing face masks in public and wash your hands often.
（1） can get the COVID﹣19 vaccines first in China.
| A． |
People of all ages |
| B． |
People aged 3 to 17 |
| C． |
People aged 18 to 59 |
| D． |
People aged 60 and above |
（2）The underlined word "disease" means in the passage.
| A． |
illness |
| B． |
trouble |
| C． |
headache |
| D． |
pressure |
（3）From the passage，we can know that the vaccines .
| A． |
will make people sick |
| B． |
can protect people from being hurt |
| C． |
can only be given in two ways |
| D． |
are very expensive |
（4）People should still wear masks after injection because .
| A． |
their bodies need time to build the ability |
| B． |
the masks can make them more beautiful |
| C． |
they may catch a cold more easily |
| D． |
the masks help the vaccines to work |
（5）This passage mainly talks about .
| A． |
physical health |
| B． |
face masks |
| C． |
doctors' advice |
| D． |
vaccine injection |
One cannot discuss Chinese music without mentioning the guqin，one of the four arts-along with game of go，calligraphy（书法）and painting.It first appeared over 3，000 years ago and stands for China's solo musical instrument tradition.
At first，the guqin had only five strings（弓玄），meaning the five elements（元素）of metal，wood，water，fire and earth.Later，in Zhou Dynasty，King Wen of Zhou added a sixth string for his son.King Wu of Zhou，added a seventh string to encourage his army to fight with the Shang.
Ambiencewas important in playing the guqin.Usually，it was practiced in a quiet setting and never for public performance.Ancient artists enjoyed performing by a stream in the mountains.The sound of the guqin mixed with the echoes（回音）from the mountains，until the musician felt he was at one with nature.Playing it in snow was also an enjoyable activity for ancient artists，who believed the instrument was the purest of its kind in the world.Also，a night with moonlight was considered wonderful for playing the guqin.Wang Wei（701-761），a highly talented man of the Tang Dynasty，liked playing it in a bamboo forest on nights with moonlight most.
Guqin pieces are usually three to eight minutes long，with the longest being Guangling Verse，which is 22 minutes long.Other famous pieces include Plum Blossoms in Three Movements，Wild Geese Landing on the Sandbank and Eighteen Songs of a Nomad Flute.
Nowadays，there are fewer than one thousand well﹣trained guqin players and perhaps no more than fifty living masters.The original number of several thousand pieces has greatly reduced to only one hundred works by today.The guqin and its music was added to the list of the Intangible Cultural Heritage of Humanity（人类非物质文化遗产）in 2003.
（1）Today，the guqin has strings.
| A． |
four |
| B． |
five |
| C． |
six |
| D． |
seven |
（2）What's the meaning of the underlined word "Ambience" in Paragraph 3？
| A． |
演奏技巧. |
| B． |
环境氛围. |
| C． |
天气状况. |
| D． |
弹奏曲目. |
（3）According to the passage，playing the guqin is a right choice.
| A． |
at a quiet restaurant |
| B． |
at a welcome party |
| C． |
in a peaceful yard with flowers |
| D． |
on a dark night with rainstorm |
（4）According to the passage，which of the following is TRUE？
| A． |
The guqin has a history of less than 3000 years. |
| B． |
The strings mean metal，wood，water，fire and stone. |
| C． |
The longest guqin piece is Guangling Verse. |
| D． |
The guqin is very popular and many people can play it. |
（5）What does the passage mainly talk about？
| A． |
The guqin and its music. |
| B． |
The guqin and its players. |
| C． |
Four Chinese traditional arts. |
| D． |
The development of guqin music. |
Most viruses can be found and killed by our immune system as soon as they enter our bodies.However，some viruses，for example，the coronavirus，are sneaky.They are difficult to recognize and find.These viruses can cause deadly diseases，like COVID﹣19.Human﹣to﹣human transmission can easily occur，and pandemic will therefore break out.Vaccination is by now a simple，safe and effective way to protect us from the diseases.
▲Vaccines are something that "looks" exactly the same as the viruses，mainly made from the viruses that are weakened or killed.They will not make us really ill.They only stimulate and activate our immune system to work，telling it something harmful is coming in.The immune system will know what the "viruses" look like，and send B cells（lymphocytes）or antibodies to find and kill them.Meanwhile，B cells will remember them for the next kill.A vaccine may also give us passive immunity by providing B cells taken from an animal or a human to play the same role.
Scientists have developed more than 180 vaccines to fight against COVID49.The technical approaches of these vaccines can be a little different，but their aims are the same.
Take the inactivated vaccine as an example.In an inactivated vaccine，the coronaviruses are already killed or made into the ones unable to produce more new viruses.When the immune system "sees" them，it will try to kill them.The question is：without enough these viruses• how can B cells remember them？That's why we need to take the vaccine more than one time.Though this vaccine is safe，it might not be as effective as it is expected to be.
The live﹣attenuated vaccine is different.In this vaccine，the viruses are weakened，but they are alive.They can produce enough new viruses to train the immune system to kill and remember them，so people only need to take the vaccine once.The live﹣attenuated vaccine is considered the most effective，but there is a worry：what might happen once these viruses wake up？
Therefore，although vaccination is by now one of the best ways to protect us from COVID﹣19，it can be better.
（1）The coronavirus can .
| A． |
not be killed |
| B． |
not be found |
| C． |
cause deaths |
| D． |
stop pandemic |
（2）Which of the following can be the best topic sentence of Paragraph 2？
| A． |
Vaccination can provide us with B cells. |
| B． |
Vaccines are made from different viruses. |
| C． |
Vaccination can prepare us against viruses. |
| D． |
Vaccines won't make us ill as the viruses do. |
（3）Compared to the inactivated vaccine，the live﹣attenuated vaccine .
| A． |
needs taking more than once |
| B． |
is equally safe |
| C． |
contains viruses that are killed |
| D． |
is more effective |
（4）What can we learn from the passage？
| A． |
Vaccination is good enough to treat COVID﹣19. |
| B． |
The immune system can be more effective with vaccines. |
| C． |
The viruses in inactivated vaccines can make new viruses. |
| D． |
180 vaccines have been developed to fight against diseases. |
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