Once harm is _______ to the eco-system, all species will ________, including man himself.      

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• 1The accused woman _______ himself by saying that he killed the man totally out of self-defense andit was completely an accident.    

  A.guarded

  B.protected

  C.defended

  D.prevented

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• 2If you want to know more information about the Analytical Machine, ______ the followingWebsite: www.computer.net      

  A.see

  B.visit

  C.look for

  D.search

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• 3He wanted to ____ the National Team to compete in the Summer Olympic Games for his country but he was disappointed that he failed at the qualifying stage.      

  A.attend

  B.takepartin

  C.joinC.joinin

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• 4Oxygen usually ______ in the form of gas in nature but when made cold enough, it can also take the form of solid.     

  A.remains

  B.staysB.existsD.survives

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• 5Theme park owners _____ their profit ____ charging admission fees, ______ new brand athletic equipment and selling souvenirs.

  A.have; from; advertising for

  B.make; by; advertising

  C.gain; with; advertising

  D.benefit; through; advertising for

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• 6His lack of professional knowledge ______for the failure of the experiment.      

  A.accounted

  B.explained

  C.counted

  D.contributed

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• 7The boy was sitting on the floor ______ by toys.  

  A.surrounded

  B.surrounding

  C.surroundings

  D.surround

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