题目列表(包括答案和解析)
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 ( )
63. The oldest kind of the computer was used in _______ centuries ago.
A. China B. America C. Japan D. England ( )
62. Norman Bethune was a famous _____________.
A. scientist B. musician C. teacher D. doctor ( )
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 ( )
60. I have ________ to my hometown three times since 1980.
A. gone B. been C. got D. reached ( )
59. Which is _________, the moon or the earth?
A. big B. bigger C. biggest D. the biggest ( )
58. The teacher said, “Stop _________ ! Listen to me!”
A. to talk B. talk C. talked D. talking ( )
57. It's very kind _______ you to help me.
A. with B. of C. for D. off ( )
56. ──Must we finish the book today?
──Yes, you ___________.
A. can B. may C. need D. must ( )
55. Come and help me, __________?
A. are we B. shall I C. don't you D. will you ( )
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