摘要: A. succeeded in B. were successful in C. have succeeded in D. have been succeeded in

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  As if there weren’t enough of them in the world already, scientists have succeeded in cloning flies.The alike fruit flies are the first insects ever cloned, says the Canadian team that created them.The question everyone asks is why anyone would want to clone flies in the first place.She hopes that the insects, which are very easy to experiment with, will help to adjust the cloning process in other animals and even in humans, where the technique is being researched to aid production of therapeutic(治疗的)stem cells.

  In cloning, the DNA-containing nucleus of an adult cell is injected into an egg whose own nucleus(细胞核)has been removed.At the moment, the majority of cloned mice, sheep and other animals die before birth.It is thought this is because the adult DNA is not properly ‘reprogrammed’.

  Using flies, researchers might discover genes that are important for this reprogramming, and that have matches in other animals.That is because it is relatively easy in flies to knock out the function of a single gene and then attempt cloning with these cells, which will test whether that gene is important.If such genes are confirmed, then in theory cloned mammalian embryos(晶胚)might be grown in selected solutions that change the activity of those genes to improve the technique’s success rate.Although some groups have attempted to clone insects before, Lloyd says this is the first time it has been successful.The team used a slight difference on the standard cloning process: they transferred nuclei taken from embryos rather than fully-grown adult cells.They sucked several nuclei(pl)out of developing fly embryos, and injected them into a fertilized(已受精的)fly egg.From over 800 early attempts, they cloned five adult insects, the group reports in the journal Genetics.

(1)

The best title of this passage probably is ________.

[  ]

A.

The importance of clone

B.

First insects are cloned

C.

The disagreement in clone

D.

The advantages of clone

(2)

The scientists cloned flies because ________.

[  ]

A.

there are fewer and fewer flies in the world

B.

flies are easy to find and cheap to use

C.

they can gain some experience before cloning other animals

D.

it is safe to cline flies

(3)

The failure of most cloned animals is due to ________.

[  ]

A.

the difference of other animals’ genes

B.

the improper technique of clone

C.

the complex of other animals

D.

the improper rearrange of the adult gene

(4)

It can be inferred from the last paragraph that ________.

[  ]

A.

the clone of insects before used grown-up cells

B.

the clone of insects were never experimented before

C.

this time scientists cloned flies successfully and easily

D.

based on this success, other animals will be cloned in large quantities.

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A. Importance of Learning from Failure

       B. Quality Shared by Most Innovators

       C. Edison’s Innovation

       D. Edison’s Comment on Failure

       E. Contributions Made by Innovators

       F. Successful Innovators      

Even Intelligent People Can Fail

_________

The unusual things about the innovators (创新者) who succeeded in making our modern world is how often they failed. Turn on a light, take a photograph, watch TV, search the web, jet across the Pacific Ocean, talk on a cell-phone. The innovators who left us these things had to find the way to success through a maze (错综复杂) of wrong turns.

_________

We have just celebrated the 125th anniversary of American innovator Thomas Edison’s success in heating a thin line to white, hot heat for 14 hours in his lab in New Jersey, US. He did that on October 22, 1879, and followed up a month later by keeping a thread of common cardboard alight (点亮着的) in an airless space for 45 hours. Three years later he went on to light up half a square mile of downtown Manhattan, even though only one of the six power plants in his design worked when he turned it on, on September 4, 1882.

________

“Many of life’s failures,” Edison said, “are because that people did not realize how close they were to success when they gave up.” Before that magical moment in October 1879, Edison had worked out no fewer than 3,000 theories about electric light. But in only two cases did his experiments work.

________

No one likes failure, but the smart innovators learn from it. Mark Gumz, the head of a camera maker, attributes some of the company’s successes in technology to understanding failure. His popular phrase is:“You only fail when you quit.”

_________

Over two centuries, the most common quality of the innovators has been persistence (坚忍不拔). That is another way of saying they had the emotional ability to keep on with what they were doing. Walt Disney, the founder of Disneyland, was so penniless after a series of financial failures that he was left shoeless in his office because he could not afford the $1.50 to get his shoes from the repair shop. Pioneering car maker Henry Ford failed with one company and was forced out of another before he developed the Model T Car.

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A. Importance of Learning from Failure

B. Quality Shared by Most Innovators

C. Edison’s Innovation

D. Edison’s Comment on Failure

E. Contributions Made by Innovators

F. Successful Innovators      

 

Even Intelligent People Can Fail

1._________

The unusual things about the innovators (创新者) who succeeded in making our modern world is how often they failed. Turn on a light, take a photograph, watch TV, search the web, jet across the Pacific Ocean, talk on a cell-phone. The innovators who left us these things had to find the way to success through a maze (错综复杂) of wrong turns.

2._________

We have just celebrated the 125th anniversary of American innovator Thomas Edison’s success in heating a thin line to white, hot heat for 14 hours in his lab in New Jersey, US. He did that on October 22, 1879, and followed up a month later by keeping a thread of common cardboard alight (点亮着的) in an airless space for 45 hours. Three years later he went on to light up half a square mile of downtown Manhattan, even though only one of the six power plants in his design worked when he turned it on, on September 4, 1882.

3.________

“Many of life’s failures,” Edison said, “are because that people did not realize how close they were to success when they gave up.” Before that magical moment in October 1879, Edison had worked out no fewer than 3,000 theories about electric light. But in only two cases did his experiments work.

4.________

No one likes failure, but the smart innovators learn from it. Mark Gumz, the head of a camera maker, attributes some of the company’s successes in technology to understanding failure. His popular phrase is:“You only fail when you quit.”

5._________

Over two centuries, the most common quality of the innovators has been persistence (坚忍不拔). That is another way of saying they had the emotional ability to keep on with what they were doing. Walt Disney, the founder of Disneyland, was so penniless after a series of financial failures that he was left shoeless in his office because he could not afford the $1.50 to get his shoes from the repair shop. Pioneering car maker Henry Ford failed with one company and was forced out of another before he developed the Model T Car.

 

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  As if there weren’t enough of them in the world already, scientists have succeeded in cloning flies.The alike fruit flies are the first insects ever cloned, says the Canadian team that created them.The question everyone asks is why anyone would want to clone flies in the first place.She hopes that the insects, which are very easy to experiment with, will help to adjust the cloning process in other animals and even in humans, where the technique is being researched to aid production of therapeutic(治疗的)stem cells.

  In cloning, the DNA-containing nucleus of an adult cell is injected into an egg whose own nucleus(细胞核)has been removed.At the moment, the majority of cloned mice, sheep and other animals die before birth.It is thought this is because the adult DNA is not properly ‘reprogrammed’.

  Using flies, researchers might discover genes that are important for this reprogramming, and that have matches in other animals.That is because it is relatively easy in flies to knock out the function of a single gene and then attempt cloning with these cells, which will test whether that gene is important.If such genes are confirmed, then in theory cloned mammalian embryos(晶胚)might be grown in selected solutions that change the activity of those genes to improve the technique’s success rate.Although some groups have attempted to clone insects before, Lloyd says this is the first time it has been successful.The team used a slight difference on the standard cloning process:they transferred nuclei taken from embryos rather than fully-grown adult cells.They sucked several nuclei(pl)out of developing fly embryos, and injected them into a fertilized(已受精的)fly egg.From over 800 early attempts, they cloned five adult insects, the group reports in the journal Genetics.

(1)

The best title of this passage probably is ________.

[  ]

A.

The importance of clone

B.

First insects are cloned

C.

The disagreement in clone

D.

The advantages of clone

(2)

The scientists cloned flies because ________.

[  ]

A.

there are fewer and fewer flies in the world

B.

flies are easy to find and cheap to use

C.

they can gain some experience before cloning other animals

D.

it is safe to cline flies

(3)

The failure of most cloned animals is due to ________.

[  ]

A.

the difference of other animals’ genes

B.

the improper technique of clone

C.

the complex of other animals

D.

the improper rearrange of the adult gene

(4)

It can be inferred from the last paragraph that ________.

[  ]

A.

the clone of insects before used grown-up cells

B.

the clone of insects were never experimented before

C.

this time scientists cloned flies successfully and easily

D.

based on this success, other animals will be cloned in large quantities.

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"Depend on yourself" is what nature says to every man. Parents can help you. Teachers can help you. But all these only help you to help yourself.

There have been many men in history.  But many of them were very poor in childhood, and no uncles, aunts or friends to help them. Schools were few. They could not depend upon them for an education. They saw how it was and set to work with all their strength to know something. They worked their own way till they became well-known.

One of the most famous teachers in England used to tell his pupils, "I can not make worthy men of you, but I can help make men of yourself."

Some young men don't try their best to make themselves valuable to the human beings. They can never gain achievement(成就) unless they see their weak points and change their course. They are nothing now, and will be nothing as long as they live, unless they accept the advice of their parents and teachers, and depend on their own efforts.

1.Which of the following titles fits this article best?

A. What Nature Says to Every Man.    B. How to Be Famous.

C. Men Must Help Each Other.        D. Depend on Yourself.

2.Many of the great men succeeded because ____________.

A. they wanted very much to become well known

B. they made great efforts to learn and work

C. they had received a good education

D. they had rich parents

3.According to the famous teacher in England, a teacher can________.

A. make his pupils rich men

B. help his pupils find a way to be famous

C. help his pupils make themselves useful men

D. make his pupils men of strength and courage

4.If young people depend on their own efforts, ______.

A. they are sure to be very famous in the world  

B. they can be successful in their lives

C. they can live without their families        

D. they no longer need any help

 

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