It is true that ________ a wild plant into a major food crop such as wheat requires much research time.

A) multiplying

B) breeding

C) magnifying

D) generating

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  A．200 years

  B．250 years

  C．375 years

  D．280 years

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• It was felt that he lacked the ______ to pursue a difficult task to the very end.

  A．engagement

  B．persuasion

  C．commitment

  D．preservation

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• All of the following can be seen from the passages as causes of terrorism EXCEPT that ______.

  A．they regard themselves as independent people

  B．they feel that no widely recognized independent government represent them

  C．they are cited by those people with a sovereign state government

  D．they do not have means to exercise political power

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• It can be inferred from the passage that a bear is going to gain money if ______.

  A．the stock price is rising

  B．the stock price is dropping

  C．the bulls are withdrawing

  D．other bears are losing money

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• It is implied in the last paragraph that ______.

  A．bulls and bears are now working for people

  B．people keep bears and bulls as their pets

  C．laws have put stock markets under control

  D．people can enjoy their friendship with bears and bulls

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