Eating 40 percent less food could extend a person`s life by 20 years, according to scientists.

Researchers at the Institute of Health Ageing at University College London are developing a treatment that they hope will fight the `disease` of getting older.

They are looking into how genetics（遺傳學(xué)） and lifestyle can affect ageing and add years, possibly decades, to a person`s life.

Age-related diseases such as cardiovascular disease, cancer and neuro degeneration can also be treated, it is claimed.

They want to find out how the life of a rat can be increased by up to 30 percent simply by reducing its food intake.

Researcher Dr. Piper told the Independent : `If you reduce the diet of a rat by 40 percent it will live for 20 or 30 percent longer. So we would be talking 20 years of human life. This has shown on all sorts of animals, even Labradors(a kind of dog).`The scientists are also studying fruit flies, which share 60 percent of human genes and age in a similar manner, and mice.

They have already made the healthy lifespan(壽命) longer in both flies and mice by using drug treatments and a balanced diet. It is hoped that this combination will also work to extend(延長) human life. Dr. Piper said: `If we discover the genes involved with ageing, we should be able to delay ageing itself. This is what we`ve found.`

He added that the field of research into extending life is only a decade old, so remains `in theory . It is their special approach to treating all age-related diseases caused by the `disease` of ageing itself that sets their research apart.

1.The author writes this text in order to_____.

A. encourage people to eat as little as possible

B. tell people how harmful food is to their health

C. introduce an on-going research on delaying ageing

D. show how similar mice and humans are to each other

2.How can people live longer according to the text?

A. Exercise regularly.

B. Reduce their diet properly.

C. Vary their lifestyles constantly.

D. Change their genes completely.

3.What does the underlined sentence in the last paragraph suggest?

A. The research is effort-taking.

B. The result of the research is reliable.

C. The research has been done for a long time.

D. There’s a long way to go to put the theory into practice.

 

1.C

2.B

3.D

【解析】

試題分析： 本文是一篇科普類文章。介紹一個有關(guān)食物的量與壽命長短的關(guān)系的研究。

1. C 考查對作者寫作意圖的理解。本文是客觀介紹一個正在進行著的研究，沒有主觀意愿。 因此，選C。

2. B 主旨大意題。本文的主旨大意是食物量和壽命長短的關(guān)系。根據(jù) 第五段“They want to find out how the life of a rat can be increased by up to 30 percent simply by reducing its food intake.”可知。

3. D 考查學(xué)生對句子深層含義的理解。本句話的意思是這個研究才開始10年，所以還停留在理論層面，故選D。

考點：考查科普類閱讀

練習(xí)冊系列答案
相關(guān)習(xí)題

科目：高中英語 來源：2016屆浙江富陽第二中學(xué)高一下期中質(zhì)量檢測英語試卷（解析版） 題型：單項填空

Don’t trust such an advertisement on TV. That kind of electronic dictionary is ______ it says.

A. as good as B. not as good as

C. as well as D. not as well as

 

查看答案和解析>>

科目：高中英語 來源：2016屆山西呂梁學(xué)院附屬高級中學(xué)高一下期末考試英語試卷（解析版） 題型：閱讀理解

Going green seems to be fad(時尚)for a lot of people these days. Whether that is good or bad, we can’t really say, but for the tow of us, going green is not a fad but a lifestyle.

On April22, 2011, we decided to go green every single day for an entire year. This meant doing 365 different green things, and it also meant challenging ourselves to go green beyond easy things. Rather than recycle and reduce our energy, we had to think of 365 different green things to do and this was no easy task.

With the idea of going green every single day for a year, Our Green Year started. My life and I decided to educate people about how they could go green in their lives and hoped we could show people all the green things that could be done to help the environment. We wanted to push the message that every little bit helps.

Over the course of Our Green Year, we completely changed our lifestyle. We now shop at organic(有機的)stores. We consume less meat, choosing green food. We have greatly reduced our buying we don’t need. We have given away half of what we owned through websites. Our home is kept clean by vinegar and lemon juice, with no chemical cleaners. We make our own butter, enjoying the smell of home-made fresh bread. In our home office anyone caught doing something ungreen might be punished.

Our minds have been changed by Our Green Year. We are grateful for the chance to have been able to go green and educate others. We believe that we do have the power to change things and help our planet.

1.What might be the best title for the passage?

A. Going Green.

B. Protecting the Planet.

C. Keeping Open-Minded

D. Celebrating Our Green Year.

2.It was difficult for the couple to live a green life for the whole year because_________.

A. they needed to perform unusual green tasks

B. they didn’t know how to educate other people

C. they were unwilling to reduce their energy

D. they were expected to follow the green fad

3.What did the couple do over the course of Our Green Year?

A. They tried to get out of their ungreen habits.

B. They ignore others’ ungreen behavior.

C. They chose better chemical cleaners.

D. They sold their home-made food.

4.What can we infer form the last paragraph?

A. The government will give support to the green people.

B. The couple may continue their project in the future.

C. Some people disagree with the couple’s green ideas.

D. Our Green Year is becoming a national campaign.

 

查看答案和解析>>

科目：高中英語 來源：2015屆黑龍江實驗中學(xué)高三上第三次考試英語試卷（解析版） 題型：信息匹配

Helping Students Find Their Writing Voices

One of the most frustrating things for writing teachers is reading papers that simply lack style. When all of the research has been completed and all of the sentences are structured well, but the paper still lacks some pizzazz（活力），it can be boring to grade. If you are searching for ways to help your students find their voices, why not try making students themselves the topic of the writing? 1.

Who are you?

One of the most difficult questions for students to answer is: “Who are you?” _ 2.__ In doing this, through writing, students will start to see their personalities differently and, hopefully, be able to add a feature to their writing.

Dear John

3. Encourage them to write to a famous person they’ve always admired, and then the one they absolutely hate. Explore how their language changes between the two letters. When students know their audiences, it is much easier for them to add the kind of personality their audience wants to see．

4. When students write about what matters most to them, they will often give you the best writing you’ve ever seen. You’ll get those when you ask questions that hit home. When students have something to say about a given topic, it can be easier for them to get their ideas down and then work on their writing style.

Get the words on paper, and then edit them

The most valuable lesson students can learn is to write first, and edit later. Have students write for five minutes about their topics. If they can get their ideas down on paper, that’s 90% of the battle. 5. This can help them realize that, once they have the ideas down, the rest is just fine tuning（微調(diào)）. Once they have this skill mastered, it’s easy for them to start adding their own personal voices to their papers.

A. What matters to you?

B. What style is taught in class?

C. When they write about themselves, students’ voices often shine through.

D. Writing letters is a great way for students to explore their writing style.

E. Have your students explore who they are and what makes them unique.

F. Voice is that magical quality which is able to make a creative writing idea sing!

G. After that, have them edit these ideas into a really strong introductory paragraph.

 

查看答案和解析>>

科目：高中英語 來源：2015屆黑龍江安達高級中學(xué)高三上第一次月考英語試卷（解析版） 題型：其他題

Jane was walking round the department store. She remembered how difficult_1.__ was to choose a suitable Christmas present for her father. She wished that he was as easy__2.__ (please) as her mother, who was always delighted with perfume.

Besides, shopping at this time of the year was not_3.__ pleasant experience: people stepped on your feet or_4.__(push) you with their elbows(肘部），hurrying ahead to get to a bargain.

Jane paused in front of a counter _5._ some attractive ties were on display. “They are real silk,” the assistant tried to attract her. “Worth double the price.” But Jane knew from past experience that her__6._(choose) of ties hardly ever pleased her father.

Jane stopped where a small crowd of men had gathered. She found some good quality pipes_7.__sale. She did not hesitate for long: although her father smoked a pipe only once in a while, she knew that this was a present which was bound to please__8.__.

When Jane got home, with her small but well-chosen present in her bag, her parents were already at table__9._(have) supper. Her mother was excited. “Your father has at last decided to stop smoking,” Jane__10.__(inform).

 

查看答案和解析>>

科目：高中英語 來源：2015屆黑龍江哈爾濱第三十二中學(xué)高三9月月考英語試卷（解析版） 題型：完形填空

I had offered to watch my 3-year-old daughter, so that my wife could go out with a friend. I was getting some work done in my study while she ______ to be having a good time in the other room. No problem, I figured. But then it got a little too ______ and I shouted, “What are you doing ?”No response. I ______ my question and heard her say, “Oh,…nothing.” Nothing？

I got up from my desk and ran out ______ the living room, where I saw her running across the hall. I followed and watched her as her little behind made a quick ______ into the bathroom. I had her ______! I told her to turn around. She ______. I pulled out my big Daddy voice, “Young lady, I said turn around !”

______, she turned toward me. In her hand was what was left of my wife’s new lipstick. And every square inch of her face was ______ with bright red! As she looked up at me with fearful eyes, I heard ______ voice that had been shouted to me as a child. “How could you…You should know…How many times have you been _____ … What a bad thing to do…” It was just a matter of my picking out which old _____ I was going to use on her so that she would know what a bad girl she had been. But ______ I could let loose, I looked ______ at the sweater on her. In big ______ it said, “I’M A PERFECT LITTLE ANGEL(天使)!” I looked back up into her tearful eyes and, ______ seeing a bad girl who didn’t listen, I saw a little angel full of ______ that I had come dangerously close to ______. “Sweetheart, let’s take a picture so Mommy can see how ______ you look.” I took the picture and thanked God that I didn’t ______ the chance to prove what a perfect little angel she had given me.

1.A. happened B. liked C. appeared D. pretended

2.A. long B. quiet C. calm D. strange

3.A. asked B. answered C. raised D. repeated

4.A. into B. of C. from D. for

5.A. way B. turn C. change D. progress

6.A. followed B. scolded C. cornered D. fooled

7.A. laughed B. listened C. agreed D. refused

8.A. Slowly B. Eagerly C. Angrily D. Unfortunately

9.A. filled B. marked C. printed D. covered

10.A. every B. such C. any D. one

11.A. told B. beaten C. frightened D. forbidden

12.A. reports B. notice C. advice D. words

13.A. as B. when C. since D. before

14.A. up B. down C. in D. on

15.A. signs B. letters C. messages D. figures

16.A. because of B. instead of C. in spite of D. as a result of

17.A. value B. sadness C. pities D. tricks

18.A. preventing B. getting rid of C. destroying D. doing wrong on

19.A. dirty B. ugly C. special D. silly

20.A. have B. get C. take D. miss

 

查看答案和解析>>

科目：高中英語 來源：2015屆黑龍江雙鴨山一中高三上期中英語試卷（解析版） 題型：短文改錯

短文改錯(共10小題；每小題I分，滿分10分)

假定英語課上老師要求同桌之間交換修改作文，請你修改你同桌寫的以下作文。文中共有10處語言錯誤，每句中最多有兩處。每處錯誤僅涉及一個單詞的增加、刪除或修改。

增加:在缺詞處加一個漏字符號(∧)，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)不計分。

Dear Arthur,

In your last letter, you told me something about your sister’s surfing on the Internet. I’m familiar to your situation. As computers become more and more popular, some students cannot help play online games and chatting. It is not only a problem of wasting time, but serious problem for their future! What you should do at first is to find out what make her addicted to computer games. Lack of love from parent ? Poor scores? Then having a heart-to-heart talk with her. Secondly, you should help herself with her study to build up her confidence and make her interesting in it. Thirdly, find something else for her to do instead computer games. Your efforts will surely help change her life.

Yours,

 

查看答案和解析>>

科目：高中英語 來源：2015屆青海西寧第四高級中學(xué)高三上月考1英語試卷（解析版） 題型：閱讀理解

Woman Uses Daughter's Key to "Steal" Car

Charlie Vansant, a college student of Athens, Ohio who reported that his car was stolen, got a surprise when he learned a woman had mistaken it for her daughter's car and taken it--using her key.

Kate Anderson became an accidental car thief when picking up her daughter's car near an Ohio University building last week. Anderson spotted the Toyota Camry（豐田凱美瑞）and used her daughter's key to unlock the car, start the engine and drive home-without realizing that the car wasn't her daughter's.

When Charlie Vansant left class a short time later, he found only an empty parking spot. He first assumed the car had been towed, but when the police couldn't find a record of it, they took a theft report.

The morning after Anderson took the car, her daughter discovered the Camry in the driveway wasn't hers. Anderson said she was able to find Vansant's name on paperwork in the glove compartment and look up his phone number on the website of the university.

When Anderson told Charlie the car was in her driveway, "It sounded real suspicious at first, as she wanted to hold the thing for ransom（贖金）,” said Vansant. He eventually went to the house with a police officer, where he was reunited with his car. According to the police report, the case was closed "because of mistaken car identity", Anderson wasn't charged.

Vansant seemed to blame the car company more than the "thief". "Her key fit not only my lock, but my ignition（點火裝置） as well-so high-five for Toyota. I guess." he said.

1.What does the underlined word "towed" mean in paragraph 3?

A. removed. B. damaged.

C. stolen. D. sold.

2.Which of the following is NOT true according to the passage?

A. Mrs. Anderson's daughter discovered the car her mother drove was not hers.

B. Mrs. Anderson stole Charlie's car at the request of her daughter.

C. Charlie had thought he had to give Anderson money to get his car back.

D. Mrs. Anderson used her daughter's key to unlock Charlie's car and drive home.

3.What does Charlie mean by "high-five for Toyota"?

A. He is blaming Toyota for the poor quality of car keys.

B. He should thank Toyota for returning his car.

C. He wants to celebrate with Toyota for getting his car back.

D. He thinks highly of Toyota for producing large quantities of cars.

4.What is likely to happen next according to the passage?

A. Mrs. Anderson was charged with stealing a car.

B. Charlie blamed Mrs. Anderson for mistakenly taking his car.

C. Charlie would ask the Toyota Company to give him an explanation.

D. The Toyota Company would give Charlie a new car as compensation.

 

查看答案和解析>>

科目：高中英語 來源：[同步]2014年重大版高中英語必修二第一單元練習(xí)卷（解析版） 題型：單項填空

About two hundred people are working in his company now，most of________ were once out of work.

A．which B．who C．that D．whom

 

查看答案和解析>>

同步練習(xí)冊答案