Which of the following best describes Callahan 's attitude to anti-ageing technology?
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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.
4 .All 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.
5 .An 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 energetic. C it lacks the curiosity to experiment what is new. D it welcomes changes.
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8 .Which of the following statements is true according to the third paragraph?
A More and more children in developing country begin to use cellphone B Cellphone usage causes more brain tumors among children C The risk of cellphones causing brain tumors in children can be excluded D Outer brain tissue of adult cannot absorb cellphone energy
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