What does the words of Dr.' Hisham Gasseib mean in the third paragraph

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• 第1题：

  
  

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• 第2题：

  
  

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• 第3题：

  
  

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• 第4题：

  Everybody loves a fat pay rise. Yet pleasure at your own can vanish if you learn that a colleague has been given a bigger one. Indeed, if he has a reputation for slacking, you might even be outrageD、Such behaviour is regarded as" all too human", with the underlying assumption that other animals would not be capable of this finely developed sense of grievance.But a study by SarahBrosnan and Frans de Waal ofEmory University inAtlanta, Georgia, which has just been published in Nature, suggests that

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• 第5题：

  The immune system is equal in complexity to the combined intricacies of the brain and nervous system. The success of the immune system in defending the body relies on a dynamic regulatory communications network consisting of millions and millions of cells. Organized into sets and subsets, these cells pass information back and forth like clouds of bees swarming around a hive. The result is a sensitive system of checks and balances that produces an immune response that is prompt, appropriate, effe

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• 第6题：

  Which statement is TRUE according to the text
  A．AIDS is the most fatal and rampant disease.
  B．Vaccine will be the only effective way to control a virus.
  C．VaxGen's vaccine would provoke an immune response strong enough to stop the virus from invading healthy cells.
  D．Most vaccines being tested did not contain virus.
  

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