Which of the following is NOT mentioned as one of the things that living longer might enable an individual to do、

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• 1What message do the last two paragraphs carry'、

  A.Taste acuity is genetically determined.

  B.Taste acuity is developed over time after birth.

  C.Taste acuity is related to one's eye and hair color.

  D.B.Taste acuity is developed over time after birth.C.Taste acuity is related to one's eye and hair color.D.Taste acuity is still a mysterious subject in scienc

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• 2Which of the following applies to supertasters in terms of bitter taste、

  A.They like bitterness in foods as well as saltiness.

  B.They like high-salt cheese as it has intense bitter taste.

  C.They prefer high-salt cheese, which tastes less bitter.

  D.They prefer high-salt cheese as it is good to health.

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• 3The article argues that supertasters

  A.like the taste of saltiness to block sweet tastes in food.

  B.like snack foods as saltiness is their primary flavor.

  C.consume less salt because they don't like intensive tastes.

  D.like to share salty cheese with nontasters.

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• 4The fourth paragraph describes briefly

  A.how to select subjects and what to do in the research.

  B.how to identify supertasters and nontasters.

  C.why to limit the number of subjects to 87 persons.

  D.why to select more male subjects than female ones.

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• 5In paragraph 2, John Hayes points out that

  A.it is good to health to eat food without salt.

  B.many people reject low-salt food completely.

  C.many people accept low-salt tasteless food reluctantly

  D.food with reduced salt tastes better.

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• 6Which of the following is implied in the sixth paragraph、

  A.Marriages in the US today are quite unstable.

  B.More and more people in the US today want to get married.

  C.Living longer would make it easier for people to maintain their marital ties.

  D.If people live longer~ they would stay in marriage longer.

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• 7All of the following are possible effects living longer might have on working life EXCEPT

  A.Communication between employers and employees would be more difficult.

  B.More money would be used by employees in payment of their employees.

  C.The job market Would be more competitive.

  D.It would be more difficult for young people to be promoted to top positions.

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• 8An important feature of a society in which people live a long life is that

  A.it places more emphasis on educating the young.

  B.it is both wise and energeti

  C.C.it lacks the curiosity to experiment what is new

  D.it welcomes changes.

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• 9Which of the following best describes Callahan's attitude to anti-ageing technology 、

  A.Optimistic.

  B.Pessimisti

  C.B.Pessimistic.C.Reserve

  D.D.Negativ

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• 10Antimicrobial resistance has become a global public health issue because

  A.there may be few or no treatment to infections caused by multi-drug resistant bacteria.

  B.new antibiotics are too expensive for poor countries.

  C.infections caused by multi—drug resistant bacteria have killed a lot of people.

  D.scientists know nothing about multi-drug resistant bacteria.

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