Ants have a reputation for strength,organization and teamwork.But researchers have now discovered that a key secret to the success of ants is their ability to identify the importance of age in the work place.
A study of Gentral American leaf-cutter ants has shown that the younger and stronger members are give the toughest job of cutting therough the leaves they harvest.Their sharp youn teeth do this job effectively,but as they get older their teeth become relatively worn and blunt.
But rather than being retired or abandoned by the group,the ageing ants are given a new role more suyted to their physical abilities.They become carriers and teansport the leaves back to the kingdom where they are harvested for food.
The findings by researchers from the University of Oregon and the Oregong State University support previous research showin the survival of a leaf-cutter kingdom depends on the efficiency(效率)of is workers.
“Cuting leaves is hard work,”said Dr.Robert Schofield,who led the research team.“Much of the cutting is done with a V-shaped blade(刀片)between teeth on their jaws.This blade starts out as sharp as the sharpest razor blade that humans have developed.”But over rime the teeth become blunter and the cutting job slows down.The team estimated that,because of this age-related wear,a colony(蚁群)spent twice the energy cutting leaves than it would if all the ants had sharp blades.Its findings support the idea that wear and break can be significant problems for insects as well as largre animals.
Like humans,leaf-cuttre ant recognize that older members of the group can still make a worhwhile contribution to society.“This study shows an advantage of social living that we are familiar with,”said Dr.Schofield.
【小题1】The younger and stronger ants do the toughest job because      .

A.they can teansport the leaves effectively
B.they have a sharp blade to cut leaves
C.other members are busy with other work
D.they can finish the job in a better organized way
【小题2】The undrelined word“blunt”in the second paragraph can be replaced by      .
A.quite looseB.less sharp
C.quite fragileD.more dirty
【小题3】What happens to the ants when they become old?
A.They no longer hve work to do.
B.They keep doing the same work.
C.They have to leave and live on themselves.
D.They are given a new worthwhile job.
【小题4】It can be learned from the passage that       .
A.Dr.Schofield is the first to research leaf-cuttre ants
B.older ants are more powerful in carrying leaves
C.large animals can also suffer from some kind of wear
D.leaf-cutter ants are the most lever ants in the world
【小题5】What can be the best title for the passage?
A.The key secret to the success of ants
B.The developed structure of ant colony
C.The most challenging job for leaf-cutter ants
D.No V-shaped blade,no success of ants

Ants have a reputation for strength,organization and teamwork.But researchers have now discovered that a key secret to the success of ants is their ability to identify the importance of age in the work place.

A study of Gentral American leaf-cutter ants has shown that the younger and stronger members are give the toughest job of cutting therough the leaves they harvest.Their sharp youn teeth do this job effectively,but as they get older their teeth become relatively worn and blunt.

But rather than being retired or abandoned by the group,the ageing ants are given a new role more suyted to their physical abilities.They become carriers and teansport the leaves back to the kingdom where they are harvested for food.

The findings by researchers from the University of Oregon and the Oregong State University support previous research showin the survival of a leaf-cutter kingdom depends on the efficiency(效率)of is workers.

“Cuting leaves is hard work,”said Dr.Robert Schofield,who led the research team.“Much of the cutting is done with a V-shaped blade(刀片)between teeth on their jaws.This blade starts out as sharp as the sharpest razor blade that humans have developed.”But over rime the teeth become blunter and the cutting job slows down.The team estimated that,because of this age-related wear,a colony(蚁群)spent twice the energy cutting leaves than it would if all the ants had sharp blades.Its findings support the idea that wear and break can be significant problems for insects as well as largre animals.

Like humans,leaf-cuttre ant recognize that older members of the group can still make a worhwhile contribution to society.“This study shows an advantage of social living that we are familiar with,”said Dr.Schofield.

1.The younger and stronger ants do the toughest job because      .

A.they can teansport the leaves effectively

B.they have a sharp blade to cut leaves

C.other members are busy with other work

D.they can finish the job in a better organized way

2.The undrelined word“blunt”in the second paragraph can be replaced by      .

A.quite loose

B.less sharp

C.quite fragile

D.more dirty

3.What happens to the ants when they become old?

A.They no longer hve work to do.

B.They keep doing the same work.

C.They have to leave and live on themselves.

D.They are given a new worthwhile job.

4.It can be learned from the passage that       .

A.Dr.Schofield is the first to research leaf-cuttre ants

B.older ants are more powerful in carrying leaves

C.large animals can also suffer from some kind of wear

D.leaf-cutter ants are the most lever ants in the world

5.What can be the best title for the passage?

A.The key secret to the success of ants

B.The developed structure of ant colony

C.The most challenging job for leaf-cutter ants

D.No V-shaped blade,no success of ants

 

Ants have a reputation for strength,organization and teamwork.But researchers have now discovered that a key secret to the success of ants is their ability to identify the importance of age in the work place.
A study of Gentral American leaf-cutter ants has shown that the younger and stronger members are give the toughest job of cutting therough the leaves they harvest.Their sharp youn teeth do this job effectively,but as they get older their teeth become relatively worn and blunt.
But rather than being retired or abandoned by the group,the ageing ants are given a new role more suyted to their physical abilities.They become carriers and teansport the leaves back to the kingdom where they are harvested for food.
The findings by researchers from the University of Oregon and the Oregong State University support previous research showin the survival of a leaf-cutter kingdom depends on the efficiency(效率)of is workers.
“Cuting leaves is hard work,”said Dr.Robert Schofield,who led the research team.“Much of the cutting is done with a V-shaped blade(刀片)between teeth on their jaws.This blade starts out as sharp as the sharpest razor blade that humans have developed.”But over rime the teeth become blunter and the cutting job slows down.The team estimated that,because of this age-related wear,a colony(蚁群)spent twice the energy cutting leaves than it would if all the ants had sharp blades.Its findings support the idea that wear and break can be significant problems for insects as well as largre animals.
Like humans,leaf-cuttre ant recognize that older members of the group can still make a worhwhile contribution to society.“This study shows an advantage of social living that we are familiar with,”said Dr.Schofield.

  1. 1.

    The younger and stronger ants do the toughest job because      .

    1. A.
      they can teansport the leaves effectively
    2. B.
      they have a sharp blade to cut leaves
    3. C.
      other members are busy with other work
    4. D.
      they can finish the job in a better organized way
  2. 2.

    The undrelined word“blunt”in the second paragraph can be replaced by      .

    1. A.
      quite loose
    2. B.
      less sharp
    3. C.
      quite fragile
    4. D.
      more dirty
  3. 3.

    What happens to the ants when they become old?

    1. A.
      They no longer hve work to do.
    2. B.
      They keep doing the same work.
    3. C.
      They have to leave and live on themselves.
    4. D.
      They are given a new worthwhile job.
  4. 4.

    It can be learned from the passage that       .

    1. A.
      Dr.Schofield is the first to research leaf-cuttre ants
    2. B.
      older ants are more powerful in carrying leaves
    3. C.
      large animals can also suffer from some kind of wear
    4. D.
      leaf-cutter ants are the most lever ants in the world
  5. 5.

    What can be the best title for the passage?

    1. A.
      The key secret to the success of ants
    2. B.
      The developed structure of ant colony
    3. C.
      The most challenging job for leaf-cutter ants
    4. D.
      No V-shaped blade,no success of ants

 

If you have read Sylvia Plath’s poetry ,you wil probably wonder what it is about and why she wrote the way she did . Her work always has strong feelings .

Born in the Jamaica Plain neighborhood of Massachusetts , Plath became an author , whose writings students all over the world have tried to analyze(分析)and understand . Plath’s mother , Aurelia Schober Plath , was a first-generation American from Austria , and her father , Otto Emile Plath , was from Grabow , Germany . Plath had a very close relationship with her father . She wrote about her father in the poem “ Daddy ” , which later became one of her most famous pieces of work . And when her father died in 1940 , eight-year-old Plath said , “ I’ll never speak to God again .” Her poem shows her great love for her father .

In 1995 , Plath graduated from Smith College with highest honors , and obtained a scholarship to Newnham College , Cambridge . It was there that she met the poet Ted Hughes and married him on June 16 , 1956 . It is said that she “ met her match ”. Plath and Hughes experienced a happy life as fully as possible for a while . Plath described Hughes as a “ singer , story-teller , lion and world-wanderer(流浪者)” with a “ voice like the thunder of God .”

Their daughter Frieda was born on April l st 1960 , and their son Nicholas was born in January , 1962. Plath’s poem “ Morning Song ” expresses her feelings as her son was born . She wrote , “ Love set you going like a fat gold watch … ” She compared her baby son to “ a fat gold watch ” , which shows her deep love and great imagination . Beginning in October , 1962 , Plath experienced a great burst of creativity and wrote most of the poems on which her reputation now rests . In 1963 , Plath dead from carbon monoxide poisoning(一氧化碳中毒). In 1982 , she became the first poet to win a Pulitzer after passing away for The Collected Poems .

56. We can learn from the text that        .

A. Plath’s poetry is famous all over the world

B. Plath didn’t like her father very much

C. Plath lived in Germany when she was youn

D. Plath’s mother was born in America

57. What can we learn from the underlined sentence in Paragraph 3 ?

A. Hughes was also an excellent poet .

B. Hughes always competed with Platch .

C. Hughes was not a good husband .

D. Hughes didn’t like to be a poet .

58. What can we learn about Plath’s poetry ?

A. It has nothing to do with her life .

B. It shows her life in the country side .

C. It is full of feelings and imagination .

D. Its language is simple and common .

59. According to the text , Sylvia Plath died        .

A. in her twenties       B. in her thirties       C. in her forties     D. in her fifties

60. What’s the main purpose of the text ?

A. To tell how Sylvia Plath became a poet .

B. To describe the features of Sylvia Plath’s poetry .

C. To explain why Sylvia Plath won a Pulitzer Prize .

D. To introduce Sylvia Plath and her poetry .

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