What does the underlined word “it” in Paragraph 5 refer to、

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• 1Why can the Antarctic cod live at the freezing temperature、

  A.The seawater has a temperature of -1.88℃.

  B.It loves to live in the ice-salt mixture.

  C.A special protein keeps it from freezing.

  D.Its blood has a temperature lower than -2.05℃.

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• 2What is the text mainly about、

  A.The terrible conditions in the Antarctic.

  B.A special fish living in freezing waters.

  C.B.A special fish living in freezing waters.C.The ice shelf around Antarctica.

  D.Protection of the Antarctic cod.

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• 3A teacher’s work is most effective with a schoolboy when he ______.

  A.is with the boy alone

  B.teaches the boy a lesson

  C.sends the boy home as punishment

  D.works together with another teacher

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• 4What should schools do to help the problem schoolboys、

  A.Wait for their change patiently.

  B.Train leaders of their peer groups.

  C.Stop the development of street culture.

  D.Give them lessons in a separate area.

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• 5What seems to have a bad effect on students like Tom、

  A.Peer groups.

  B.A special unit.

  C.The student judges.

  D.The home environment.

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• 6What does “glycol-” in the underlined word “glycoprotein” in the last paragraph mean、

  A.sugar

  B.ice

  C.blood

  D.molecule

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• 7What do the underlined words “a steal” in Paragraph 3 mean、

  A.an act of stealing

  B.something delicious

  C.something very cheap

  D.an act of buying

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• 8London has become the second most expensive city because of ______.

  A.the high cost of clothing

  B.the stronger pound against the dollar

  C.its expensive transportation

  D.the high prices of fast food meals

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• 9Which city is the third most expensive on the list、

  A.Tokyo.

  B.Hong Kong.

  C.Moscow.

  D.Sydney.

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• 10Which city has dropped most on the list in North America、

  A.New York.

  B.Los Angeles.

  C.San Francisco.

  D.Toronto.

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