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问题 单项选择题

盾构贯通肖停机后清除洞口碴土，割除洞口最后的支撑结构，支撑结构切割顺序为（）。

A.先切割上部，后切割中部

B.先切割上部，后切割下部

C.先切割中部，后切割上部

D.先切割底部，后切割上部

答案

参考答案：D

填空题

  • A. How about her
  • B. What happened
  • C. I believe he
  • D. poor Alan
  • E. I can imagine
  • F. I guess something
  • G. ls she fine now
  • H. I don’t know
    Robyn: Has Alan shown up yet
    Scottie: Nope. (56) might have come up.
    Robyn: I wonder what happened.
    Scottie: (57) . I hope it’s nothing serious.
    Robyn: Last week his sister was admitted to the hospital.
    Scottie: Oh (58)
    Robyn: His sister had a car accident last week.
    Scottie: (59)
    Robyn: She’s still in a coma(昏迷).
    Scottie: Oh, (60) . His sister is the only he has left since his mother died last year.
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单项选择题 A型题

正常月经来潮是由于（）

A.体内雌孕激素撤退性出血

B.体内雌激素的撤退性出血

C.体内孕激素的突破性出血

D.体内雌孕激素的突破性出血

E.体内孕激素的撤退性出血
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