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．There only foreign students can apply.B．There students can buy meal ticket.C．There language and culture activities are organized.D．There children are allowed to live.
A．There only foreign students can apply.
B．There students can buy meal ticket.
C．There language and culture activities are organized.
D．There children are allowed to live.
单项选择题
A．To attract more sea animals to the testing site.B．To drive dangerous sea animals away from the testing site.C．To help track the sea animals being tested.D．To determine how sea animals communicate with each other.
A．To attract more sea animals to the testing site.
B．To drive dangerous sea animals away from the testing site.
C．To help track the sea animals being tested.
D．To determine how sea animals communicate with each other.
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