单项选择题

A．They were frightened and distressed.
B．They swam away when the speaker was turned on.
C．They swam closer to "examine" the speaker when it was turned off.
D．They didn’t seem to be frightened and kept swimming near the speaker.
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单项选择题
A．They ran a high fever.B．They died from excessive bleeding.C．Their nervous system was damaged.D．They suffered from heart-attack.
A．They ran a high fever.
B．They died from excessive bleeding.
C．Their nervous system was damaged.
D．They suffered from heart-attack.
单项选择题
A．They locked the couple up in the drawing room.B．They seriously injured the owners of the house.C．They smashed the TV set and the telephone.D．They took away sixteen valuable paintings.
A．They locked the couple up in the drawing room.
B．They seriously injured the owners of the house.
C．They smashed the TV set and the telephone.
D．They took away sixteen valuable paintings.
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