Tu Youyou, 84, honored with the Nobel Prize in Physiology or Medicine on Oct 5, 2015. She was the first Chinese citizen to win a Nobel Prize in science for her work in helping to create an anti-malaria(瘧疾) medicine.

In 1967, Communist leader Mao Zedong decided there was an urgent national need to find a cure for malaria. At the time, malaria spread by mosquitoes was killing Chinese soldiers fighting Americans in the jungles of northern Vietnam. A secret research unit was formed to find a cure for the illness. Two years later, Tu Youyou was instructed to become the new head of Mission 523. Researchers in Mission523 pored over ancient books to find historical methods of fighting malaria. When she started her search for an anti-malarial drug, over 240,000 compounds(化合物) around the world had already been tested, without any success.

Finally, the team found a brief reference to one substance, sweet wormwood(青蒿), which had been used to treat malaria in China around 400 AD. The team isolated one active compound in wormwood, artemisinin(青蒿素), which appeared to battle malaria-friendly parasites(寄生蟲). The team then tested extracts(提取物) of the compound but nothing was effective until Tu Youyou returned to the original ancient text. After another careful reading, she improved the drug recipe one final time, heating the extract without allowing it to reach boiling point.

After the drug showed promising results in mice and monkeys, Tu volunteered to be the first human recipient of the new drug. “As the head of the research group, I had the responsibility.” she explained.

1.When did Ms. Tu start her malaria research?

A. When she was 84 years old

B. After she entered “Mission 523”.

C. In 1967

D. When malaria become serious among ordinary Chinese people.

2.What can we learn about the discovery of anti-malaria drug?

A. The process of testing extracts of the compound is very smooth.

B. No one had ever done any research on it before Tu and her team.

C. The idea of using wormwood to treat malaria was from ancient Chinese text

D. Heating the extract until it reaches boiling point is necessary.

3. The underlined phrases “pore over” in paragraph 3 most probably means ________.

A. think about B. pay attention to

C. search for D. go over

4.Which of the following words can best describe Tu Youyou?

A. Responsible B. Traditional

C. Stubborn D. Lucky

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目:高中英語 來源:2015-2016學(xué)年黑龍江牡丹江一中高一下期中考試英語試卷(解析版) 題型:閱讀理解

When I began planning to move to Auckland to study, my mother was a little worried about the uncertainty of living in a place that was so different from India, where we lived. She worried particularly about the lack of jobs, the cultural differences and the chance that I would face racism(種族偏見).

Despite these worries, I came to New Zealand in July 2009. I have found the place and people very nice and supportive. Soon after I arrived, I realized the importance of getting a job for my living expenses.

Determined to do this on my own, I spent a whole day going door to door asking for a job. However, I received little response. This became my routine every day after college for a few weeks.

One afternoon, I walked into a building to ask whether there were any job opportunities. People there were very surprised, and advised me not to continue my job search in that manner. As I was about to leave, a clerk in the building, who had been listening to what the others had said, approached me and asked me to wait outside for a while. Fifteen minutes later, he returned. He asked me about my plans and encouraged me to stay confident. Then he offered to take me to Royal Oak to search for a job.

I was a little surprised but had a good feeling about him. He gave me some suggestions on dressing and speaking. I handed out my resumes and went home feeling very satisfied. The following day, I received a call from a store in Royal Oak offering me a job.

It seems that the world always gives back to you when you need it .And this time,it was a complete stranger who turned out to be a real blessing.

1.What wasn’t the author’s mother worried about?

A. The author couldn’t speak the local language.

B. The author wasn’t familiar with local customs.

C. People might look down on the author.

D. It might be difficult for the author to find a job.

2.After staying in New Zealand for a short time, the author ______.

A. decided to go back to his own country

B. had to find a job to cover his living expenses

C. felt the local people were not very friendly

D. wanted to get a job that needed practical skills

3. When the author went into a building to look for a job, ______.

A. a clerk recommended him to the company he worked for

B. he was confident that he would find a good one

C. he found many college students like him already there

D. a clerk gave him encouragement and advice

4.What is the story mainly about?

A. How a stranger offered the author a job.

B. How a stranger turned out to be a real blessing.

C. How the author was helped to get a job by a stranger.

D. How the author adapted himself to a new situation.

查看答案和解析>>

科目:高中英語 來源:2015-2016學(xué)年遼寧大石橋二中高二下期中考試英語試卷(解析版) 題型:七選五

根據(jù)短文內(nèi)容,從短文后的七個(gè)選項(xiàng)中選出能填入空白處的最佳選項(xiàng)。選項(xiàng)中有兩項(xiàng)為多余選項(xiàng)。

A major source of teen stress is school exams, and test anxiety is not uncommon. When you recognize your teen is under stress, how can parents help your teen stay calm before an exam? Be involved. Parents need to be involved in their teen’s work. 1._ What they look for is your presence — to talk, to cry, or simply to sit with them quietly. Communicate openly with your teen. Encourage your teen to express her worries and fears, but don’t let them focus on those fears.

Help them get organized. 2. Together , you and your teen can work out a time—table in which she can study for what she knows will be on the test.

Provide a calm setting. Help your teen set up a quiet place to study and protect his privacy. Give them a nutritious diet. It is important for your teen to eat a healthy, balanced diet during exam times to focus and do her best. 3. If this happens, encourage your teen to eat light meals or sandwiches. A healthy diet, rather than junk food, is best for reducing stress.

4. Persuade your teenager to get some sleep or do something active when she needs a real break from studying. Making time for relaxation, fun, and exercise are all important in reducing stress. Help your teen balance her time so that she will feel comfortable taking time out from studying to spend time with friends or rest.

Show a positive attitude. 5. Your panic, anxiety and blame contribute to your teen’s pressure. Make your teen feel accepted and valued for her efforts. Most importantly, reassure your teen that things will be all right , no matter what the results are.

A. A parent’s attitude will dictate their teen’s emotions.

B. Exam stress can make some teens lose their appetite.

C. They will only make the situation worse.

D. Encourage your teen to relax.

E. The best thing is simply to listen.

F. Help your teen think about what she has to study and plan accordingly.

G. Your teen may also make negative comments about themselves

查看答案和解析>>

科目:高中英語 來源:2015-2016學(xué)年山西呂梁高級(jí)實(shí)驗(yàn)中學(xué)高一上期末考試英語試卷(解析版) 題型:完形填空

完形填空

閱讀下列短文,掌握其大意,然后從1-20各題所給的四個(gè)選項(xiàng)(A、B、C和D)中,選出最佳選項(xiàng),并在答題卡上將該項(xiàng)涂黑。

The sound of the rain hitting the windows wakes me up and it sounds just exactly as it did l5 years ago,which reminded me of my girlhood.

It was my second day of _________ and it was raining heavily.I could not _________ the habit I had at home,so I fell asleep right at my_________ .I woke up to find myself not in the classroom but carried on Dad’s back. We were _________ home.It was the last time I felt _________ to him.

After that,he never carried me or hugged me as other fathers did to their children.I was not bothered much by this _________ .I was proud of it, for I felt _________ and “grown up”.However,there were times when I felt depressed by not having searched for _________ from him.

One day.I was writing Chinese characters as homework.I hated doing this more than anything.Dad came and stood behind me for a moment, _________ me scratching(勾抹)the paper.Then he said,“This kind of writing needs _________ .Your writing is not strong enough.Press harder.”

I followed his _________ for the next two weeks, but _________ I could see little improvement, I followed my own method---- the _________way.His advice did not improve my writing but our_________ .As I grew older,I found out that he had finished his _________ in Grade 6,which was the highest grade in town then,so he was considered to be a _________ . People used to ask him to write something to put on the walls, but he never felt very useful.

He often said to me,“As you can see,this family is going to count on(指望)you.We are_________ to improve you anything for your future. You have to get _________ to change the life for yourself.”

As a result of his _________ , I have_________ it through high school and through college.

1.A.Graduation B.Employment C.College D.school

2.A.develop B.resist C.follow D.break

3.A.dormitory B.door C.desk D.bed

4.A.a(chǎn)t B.a(chǎn)lready C.beyond D.halfway

5.A.close B.near C.happy D.relaxed

6.A.gap B.thought C.a(chǎn)ction D.scene

7.A.lonely B.depressed C.independent D.comfortable

8.A.comfort B.help C.support D.explanation

9.A.guiding B.directing C.watching D.blaming

10.A.skill B.patience C.time D.practice

11.A.introduction B.manner C.spirit D.a(chǎn)dvice

12.A.even if B.while C.a(chǎn)s D.though

13.A.difficult B.slow C.entertaining D.fast

14.A.relationship B.friendship C.thought D.reality

15.A.schooling B.career C.hope D.dream

16.A.writer B.scholar C.scientist D.specialist

17.A.tired B.glad C.useless D.ready

18.A.a(chǎn)n education B.a(chǎn) rich boyfriend C.a(chǎn) well-paid job D.a(chǎn) good writing

19.A.help B.expectations C. examination D. watch

20.A.succeeded B.got C.made D. found

查看答案和解析>>

科目:高中英語 來源:2015-2016學(xué)年山西呂梁高級(jí)實(shí)驗(yàn)中學(xué)高二下期中考試英語試卷(解析版) 題型:短文改錯(cuò)

短文改錯(cuò)

假定英語課上老師要求同桌之間交換修改作文,請(qǐng)你修改你同桌寫的一篇作文。文中共有10處語言錯(cuò)誤,每句最多有兩處。每處錯(cuò)誤僅涉及一個(gè)單詞的增加、刪除或修改。

增加:在缺詞處加一個(gè)漏字符號(hào)(Λ),并在其下面寫出該加的詞。

刪除:把多余的詞用斜線(\)劃掉。

修改:在錯(cuò)的詞下劃一橫線,并在該詞下面寫出修改后的詞。

注意:

1. 每處錯(cuò)誤及其修改均僅限一詞;

2. 只允許修改10處,多者(從第11處起)不計(jì)分。

Dear Mary,

It’s quite some time since I was last received your letter. I really miss you. Now I have a problem and I am writing to you for some advices.

One day my deskmates was looking for her dictionary everywhere, but she couldn’t find one. Then she thought I had taken her dictionary. Usually I didn’t get on very well with him. No matter how hard I explained her this time, she wouldn’t listen.

What’s more, she told others that I have taken her dictionary. But I am very unhappy recently.

I haven’t taken her dictionary and I really don’t know what to deal with such a problem. Write to me as soon as quickly if you are free.

Best wishes,

Li Hua

查看答案和解析>>

科目:高中英語 來源:2015-2016學(xué)年江西豐城中學(xué)高一下期第二次月考英語試卷(解析版) 題型:語法填空

閱讀下面材料,在空白處填入適當(dāng)?shù)膬?nèi)容(1個(gè)單詞)或括號(hào)內(nèi)單詞的正確形式。

As the plane circled over the airport,everyone sensed that something was wrong. The plane __1.__ ( move) unsteadily through the air,and although the passengers __2.__ (fasten) their seat belts,they were suddenly thrown forward. At that moment,the air-h(huán)ostess presented. She looked very pale, __3.__ was quite calm. Speaking quickly and almost in a whisper,she informed everyone that the pilot had fainted and asked if any of the _4.__ (passenger) knew anything about machines. After a moment's hesitation,_5.__ man got up and followed the hostess into the pilot's cabin. Moving the pilot aside,the man took his seat and listened carefully to the urgent instructions that __6.__ (send) by radio from the airport below. To everyone's relief,the plane,which was __7._ (dangerous)close to the ground at the moment,soon began to climb. The man had to circle the airport several times to become familiar __8.__ the controls of the plane. The critical moment came __9.__ he had to land. The man,_10.__ (follow) the instructions,guided the plane toward the airfield,and it landed safely after a long run along the runway.

查看答案和解析>>

科目:高中英語 來源:2015-2016學(xué)年河北唐山開灤第二中學(xué)高一下期中考試英語試卷(解析版) 題型:單句改錯(cuò)

根據(jù)下列語境,寫一篇100詞左右的短文。

假設(shè)你是星光中學(xué)的李華,將參加主題為“Let's Ride Bicycles”的英語演講比賽。

請(qǐng)撰寫一份演講稿,主要內(nèi)容包括:

1. 目前汽車帶來的空氣污染和交通堵塞等問題;

2. 騎自行車的益處,如節(jié)能環(huán)保、有利健康等。

參考詞匯:低碳生活(low-carbon life);節(jié)能(energy saving)

注意:1.詞數(shù):120詞左右;

3. 演講稿開頭和結(jié)尾已給出,不計(jì)入總詞數(shù)。

Good morning, everyone,

I am Li Hua form Xingguang Middle School. The topic of my speech is "Let's Ride

Bicycles".______________________________________________________________

______________________________________________________________________

______________________________________________________________________

______________________________________________________________________

______________________________________________________________________

______________________________________________________________________

Thank you!

查看答案和解析>>

科目:高中英語 來源:2016年河北省邯鄲市高三下學(xué)期第二次模擬英語試卷(解析版) 題型:閱讀理解

B

Alexis, 17, sat quietly in the passenger seat of her dad's car.She let her eyes lazily scan the landscape for wildlife.Then a deer came into view about 200 yards in front of them."Dad, there's a deer there!" Alexis said.It was a male deer with sharp antlers (角) on each side of its head.

As the car moved closer, Alexis saw that the deer's head was bent toward the ground.Then she heard a scream and saw an arm fly up near the deer's head.Alexis realized the deer was attacking a woman.Sue, a 44-year-old mother, had been out for her morning run.The deer followed her and edged closer."I knew I was in trouble," Sue says.She went to pick up a stick for self-defense, and the deer charged.It lifted her with its antlers and threw her into the air.Sue could feel blood flew down her leg.Within seconds, the deer had pushed her off the road.

When Alexis and her father pulled up, the deer was throwing Sue like a doll.Alexis looked into the woman's terrified eyes, and before her father had even stopped the car, the teenager jumped quickly out of the car and ran toward the deer."I was kicking it to get its attention," she says.Then her father, who had followed his daughter, pushed the deer away from the women.

Alexis helped Sue into the car, and then applied a piece of cloth to Sue's injured leg."We're going to get you to a hospital," Alexis said.Then she heard her father shout loudly.He had been knocked to the ground.Alexis took hold of a hammer from the car and ran to where her father lay on his back.She beat the deer's head and neck, but the blows didn't scare it away."I was losing faith," she says."A couple more strikes, Alexis," said her father."You can do it." Turning the hammer around, Alexis closed her eyes and beat the deer's neck with all her strength.When she opened her eyes, the deer was running away.Alexis got in the driver's seat and sped toward the nearest hospital.

After Sue was treated, she tearfully thanked her rescuers."You expect a teenage girl to get on the phone and call for help," she says, "not to beat up a deer."

1.What was Sue doing when she was attacked by the deer?

A.She was driving home.

B.She was resting on the road.

C.She was taking exercise.

D.She was feeding wild animals.

2.What did Alexis do to save Sue?

A.She pushed the deer away

B.She hit the deer with her feet

C.She drove the car to hit the deer.

D.She beat the deer with a hammer.

3.Which of the following words can best describe Alexis?

A.Strong

B.Cruel.

C.Energetic.

D.Brave.

4.What is the best title for the passage?

A.A Woman Was Seriously Injured

B.A Dangerous Deer Attacked a Woman

C.A Girl Rescued Her Father Successfully

D.A Teenager Saved Others from a Deer Attack

查看答案和解析>>

科目:高中英語 來源:2016屆山東淄博高三下期第一次模擬考試英語試卷(解析版) 題型:閱讀理解

閱讀理解

The International Voluntary Service runs a number of Youth Exchanges throughout the year.Youth Exchanges give small groups of 4-5 young people the opportunity to take part in volunteering trips abroad for an average of two weeks.These young people are joined by 4-5 young people from 3-4 other nationalities and are a wonderful intercultural experience in a safe environment.

Example Youth Exchanges:

Youth Exchange 1

Location:Ireland

Other nationalities:Ireland,Spain,Italy,Hungary

Theme:Focuses on the topic of community reconstruction and community activities—exploring how local issues facing our communities are connected to global issues.The group will also learn about the eco-village as an example of a community and take part in team-building activities.

Youth Exchange 2

Location:France

Other nationalities:Bulgaria,Italy,F(xiàn)rance

Theme:Organic gardening & continual living.This project will take place in a natural park,where the group will take part in gardening activities and games/workshops about continuous development.

Youth Exchange 3

Location:Macedonia

Other nationalities:Serbia,Turkey,Ireland

Theme:Foster social inclusion and motivate personal development of young people through sports and outdoor activities.Promote outdoor activities as a tool to help inclusion of young people with fewer opportunities.

Youth Exchange 4

Location:Italy

Other nationalities:Italy,Bulgaria,Greece

Theme:A sociaI-environmental project that intends to promote social inclusion and continuable development,regarded as a process of civil rights and active citizenship.Over 10 days, the group will participate in activities to raise awareness about the effect of our behavior on the environment.

1.What do you focus on when travelling in France?

A.Gardening work.

B.Civil rights

C.Developing social inclusion.

D.Rebuilding communities

2.If you are interested in protecting the environment,you can take part in______.

A.Youth Exchange 1 B.Youth Exchange 2

C.Youth Exchange 3 D.Youth Exchange 4

3.Which nationality are Youth Exchanges most popular with?

A.Spain. B.Italy

C.Ireland D.France

查看答案和解析>>

同步練習(xí)冊(cè)答案