题目内容

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

 

D

【解析】which不能指人；who与that不能跟在介词后面。

 

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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（遗传学） 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(寿命) 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(延长) 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.

 

—Would you like to buy a car here?

—Yes,but I’d like to buy made in Shanghai.

A.that B.one C.it D.the one

 

Looking back on my childhood,I am convinced that naturalists are born and not made.Although we were all brought up in the same way,my brothers and sisters soon abandoned their pressed flowers and insects.Unlike them,I had no ear for music and languages.I was not an early reader and I could not do mental arithmetic.

Before World War Ⅰ we spent our summer holidays in Hungary.I have only the dim memory of the house we lived in,of my room and my toys.Nor do I recall clearly the large family of grandparents,aunts,uncles and cousins who gathered next door.But I do have a clear memory of the dogs,the farm animals,the local birds,and above all,the insects.

I am a naturalist,not a scientist.I have a strong love of the natural world and my enthusiasm led me into varied investigations.I love discussing my favorite topics and enjoy burning the midnight oil while reading about other people’s observations and discoveries.Then something happens that brings these observations together in my conscious mind.

Suddenly you fancy you see the answer to the riddle,because it all seems to fit together.This has resulted in my publishing 300 papers and books,which some might honor with the title of scientific research.

But curiosity,a keen eye,a good memory and enjoyment of the animal and plant world do not make a scientist:one of the outstanding and essential qualities required is self-discipline,a quality I lack.A scientist requires not only self-discipline,but hard training,determination and a goal.A scientist,up to a certain point,can be made.A naturalist is born.If you can combine the two,you get the best of both worlds.

1.The first paragraph tells us the author .

A.was interested in flowers and insects in his childhood

B.lost his hearing when he was a child

C.didn’t like his brothers and sisters

D.was born to a naturalist’s family

2.The author can’t remember his relatives clearly because .

A.he didn’t live very long with them

B.the family was extremely large

C.he was too young when he lived with them

D.he was fully occupied with observing nature

3.Which of the following statements is TRUE according to the passage?( )

A.The author is a naturalist,but not a scientist.

B.The author is a scientist as well as a naturalist.

C.The author is first of all a scientist.

D.The author is neither a naturalist nor a scientist.

4.The author says that he is a naturalist rather than a scientist probably because he thinks he .

A.has a great deal of trouble doing mental arithmetic

B.lacks some of the qualities required of a scientist

C.just reads about other people’s observations and discoveries

D.comes up with solutions in a most natural way

 

—Wow!You’ve got so many clothes here.

—Yes,but of them are in fashion now.

A.either B.both C.neither D.none

 

This road is not in a good state；you know，it wasn’t ________ for such heavy traffic 10 years ago.

A．made B．designed C．built D．wanted

 

— Shall I give you a ride as you live so far away?

—Thank you.________.

A．It couldn’t be better B．Of course you can

C．If you like D．It’s up to you

 

—John！Is this bag yours?

—Yes.It is the same bag________ I lost yesterday.Where did you find it？

A．which B．as C．that D．so

 

In his speech，he said that it was his primary school teachers that he was fond of________influenced his whole life.

A．what B．which C．as D．who

 

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