题目列表(包括答案和解析)

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64. Solids can be turned into liquids if we raise their temperature

   high enough.That is called a _________.

   A. chemical change      B. physical change

   C. chemical state       D. physical state        (    )

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63. The oldest kind of the computer was used in _______ centuries ago.

   A. China   B. America   C. Japan   D. England    (    )

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62. Norman Bethune was a famous _____________.

   A. scientist   B. musician   C. teacher   D. doctor   (    )

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61. _________ , but could you tell me the way to the office?

   A. Excuse me        B. I'm sorry

   C. I beg your pardon      D. Please excuse       (    )

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60. I have ________ to my hometown three times since 1980.

   A. gone    B. been    C. got    D. reached    (    )

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59. Which is _________, the moon or the earth?

   A. big     B. bigger   C. biggest   D. the biggest  (    )

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58. The teacher said, “Stop _________ ! Listen to me!”

   A. to talk    B. talk    C. talked   D. talking    (    )

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57. It's very kind _______ you to help me.

   A. with    B. of     C. for     D. off     (    )

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56. ──Must we finish the book today?

   ──Yes, you ___________.

   A. can    B. may    C. need    D. must     (    )

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55. Come and help me, __________?

   A. are we   B. shall I   C. don't you   D. will you    (    )

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