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     When you see geese flying along in V formation, you might consider what science has discovered
as to why they fly that way.
     As each bird flaps wings, it creates an uplift for the bird immediately following. By flying in V
formation, the whole flock at least 71 per cent greater flying range than if each bird flew on its own.
Individuals who share a common direction and sense of community can get where they are going more
quickly and easily because they are travelling on the pushing force of one another.
     When a god se falls out of formation, it suddenly feels the drag and resistance of trying to go it alone,
and quickly gets back into formation to take advantage of the lifting power of the bird in front. If we
have as much sense as a goose, we will stay in formation with those people who are headed the same
way we are.
     When the head goose gets tired, it moves back in the formation and another goose flies point. It is
sensible to take turns doing demanding jobs, whether with people or with geese flying south.
     Geese honk from behind to encourage those up front to keep up their speed. What messages do
we give when we honk from behind?
     Finally -and this is important -when a goose gets sick or is wounded by gunshot, and falls out of
formation, two other geese fall out with that goose and follow it down to lend help and protection.
They stay with the fallen goose until it is able to fly or until it dies, and only then do they launch out on
their own, or with another formation, to catch up with their group.
     If we have the sense of a goose, we will stand by each other like that.
1. By flying in "V" formation, a goose can ______.
A. learn who leads the group         
B. see the direction ahead clearly
C. fly at a higher speed and reach a further place    
D. greatly reduce the risk of being hit by gunshots
2. What does the underlined word "honk" mean?
A. To fly.   
B. To move.  
C. To cry.          
D. To fight.
3. Which of the following is NOT suggested in the text?
A. We should be united as one to achieve a common goal.
B. We should work together with those who share our dream.
C. We should take our share of responsibility in a huge task.
D. We should encourage those falling behind to keep on trying.
4. What's the main purpose of the text?
A. To encourage us to learn from geese.
B. To announce some new findings about geese.
C. To prove the similarities between humans and geese.
D. To persuade us to find more about life of geese.
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科目:高中英语 来源:设计必修一英语北师版 北师版 题型:050

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How Long Can People Live?

  She took up skating at age 85, made her first movie appearance at age 114, and held a concert in the neighborhood on her 121st birthday.

  Whe n it comes to long life, Jeanne Calment is the world’s recordholder.She lived to the ripe old age of 122.So is 122 the upper limit to the human life span(寿命)?If scientists come up with some sort of pill or diet that would slow aging, could we possibly make it to 150-or beyond?

  Researchers don’t entirely agree on the answers.“Calment lived to 122, so it wouldn’t surprise me if someone alive today reaches 130 or 135,”says Jerry Shay at the University of Texas.

  Steve Austad at the University of Texas agrees.“People can live much longer than we think,”he says.“Experts used to say that humans couldn’t live past 110.When Calment blew past that age, they raised the number to 120.So why can’t we go higher?”

  The trouble with guessing how old people can live to be is that it’s all just guessing.“Anyone can make up a number,”says Rich Miller at the University of Michigan.“Usually the scientist who picks the highest number gets his name in Time magazine.”

  Won’t new anti-aging techniques keep us alive for centuries?Any cure, says Miller, for aging would probably keep most of us kicking until about 120.Researchers are working on treatments that lengthen the life span of mice by 50 percent at most.So, if the average human life span is about 80 years, says Miller,“adding another 50 percent would get you to 120.”

  So what can we conclude from this little disagreement among the researchers?That life span is flexible(有弹性的),but there is a limit, says George Martin of the University of Washington.“We can get flies to live 50 percent longer,”he says.“But a fly’s never going to live 150 years.”

  “Of course, if you became a new species(物种),one that ages at a slower speed, that would be a different story,”he adds.

  Does Martin really believe that humans could evolve(进化)their way to longer life?“It’s pretty cool to think about it,”he says with a smile.

(1)

What does the story of Jeanne Calment prove to us?

[  ]

A.

People can live to 122.

B.

Old people are creative.

C.

Women are sporty at 85.

D.

Women live longer than men.

(2)

According to Steve Austad at the University of Texas, ________.

[  ]

A.

the average human life span could be 110

B.

scientists cannot find ways to slow aging

C.

few people can expect to live to over 150

D.

researchers are not sure how long people can live

(3)

Who would agree that a scientist will become famous if he makes the wildest guess at longevity?

[  ]

A.

Jerry Shay.

B.

Steve Austad

C.

Rich Miller

D.

George Martin

(4)

What can we infer from the last three paragraphs?

[  ]

A.

Most of us could be good at sports even at 120.

B.

The average human life span cannot be doubled.

C.

Scientists believe mice are aging at a slower speed than before.

D.

New techniques could be used to change flies into a new species.

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