A)humans won’t have to donate organs for transplantation

   B)more people will donate their organs for transplantation

   C)animal organs could be transplanted into human bodies

   D)organ transplantation won’t be as scary as it is today

4. According to professor Richard Miller of the University of Michigarr, prople will____.

  A)life for as long as they wish

  B)be relieved from all sufferings

  C) life to 100 and more with vitality

  D)be able to live longer than whales

5.Priceton professor Freeman Syson thinks that____.

A)scientists will find alien life similar to ours

B)humans will be able to settle on Mars

C)alien life will likely be discovered

D)life will start to evolve on Mars

6.According to Princeton professor Richard Gott,by setting up a self-sufficient colony on Mars,

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