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[主观题]
What was the reaction of the sea animals in the sound tests？A．They were frightened and dis
What was the reaction of the sea animals in the sound tests？
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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