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Scientists in the UK have announced that the piranhafish"s reputation21a fearsome22may well not be deserved. The fish, which is found in the Amazon in Brazil, have been23as deadly carnivores( 食肉动物 ) that work in shoals to overwhelm their prey and strip it of its flesh in seconds.

However, experts24St Andrews University say that piranhas are omnivores(杂食动物) that mainly eat fish, plants and insects. They form. big groups not to hunt but to defend25against other predators, according to the team.

"Previously it was thought piranhas shoaled as it26them to form. a cooperative hunting group," said Professor Anne Magurran. "27, we have found that it is primarily a defensive behavior. "

Piranhas can be attacked by animals28dolphins, caimans and large fish, so forming a shoal is a good way of29being killed. Piranhas of30age stay in the middle of the group for31and the32of the shoal differs according to the level of33When the water level is34, the fish form. small groups as there is space to escape, but when the water level drops, they form. large groups as protection35predators.

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  • A.as
  • B.as if
  • C.as though
  • D.since
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The judging panel________. 查看材料

  • A.doesn"t include women
  • B.includes only women
  • C.in only chosen from representatives of the industry
  • D.includes someone from outside the industry

The consistent quality of the prize________. 查看材料

  • A.is guaranteed by the prize money
  • B.is guaranteed by the gender of the judges
  • C.is guaranteed by the make-up of the panel of judges
  • D.is guaranteed by the increase in sales of the winner

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The Man Booker Prize for Fiction is awarded every year for a novel written by a writer from the Commonwealth or the Republic of Ireland and it aims to represent the very best in contemporary fiction. The prize was originally called the Booker-McConnell Prize, which was the name of the company that sponsored it, though it was better-known as simply the "Booker Prize". In 2002, the Man Group became the sponsor and they chose the new name, keeping "Booker".

Publishers can submit books for consideration for the prize, but the judges can also ask for books to be submitted they think should be included. Firstly, the Advisory Committee give advice if there have been any changes to the rules for the prize and selects the people who will judge the books. The judging panel changes every year and usually a person is only a judge once.

Great efforts are made to ensure that the judging panel is balanced in terms of gender and professions within the industry, so that a writer, a critic, an editor and an academic are chosen along with a well-known person from wider society. However, when the panel of judges has been finalized,they are left to make their own decisions without any further involvement or interference from the prize sponsor.

The Man Booker judges include critics, writers and academics to maintain the consistent quality of the prize and its influence is such that the winner will almostcertainly see the sales increase considerably, in addition to the £ 50,000 that comes with the prize.

The Man group________. 查看材料

  • A.was forced to keep the name "Booker"
  • B.decided to include the name "Booker"
  • C.decided to keep the name "Booker-McConnell"
  • D.decided to use only the name "Booker"

Which of the following statements best explains the relationship between gold and its karat rating? 查看材料

  • A.The lower the karat rating,the purer the gold.
  • B.The higher the karat rating,the more expensive the gold.
  • C.The higher the karat rating,the less valuable the mixture.
  • D.The lower the karat rating,the purer the alloy.
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