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 trace the sea animals being testing site.
D．To determine how sea animals communicate with each other.
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单项选择题
A．Mr. Smith will be replaced if he makes another mistake.B．Mr. Smith is an admirable chief of the Asian department.C．Mr. Smith’s department is more successful than ail the others.D．Mr. Smith is seldom in his office.
A．Mr. Smith will be replaced if he makes another mistake.
B．Mr. Smith is an admirable chief of the Asian department.
C．Mr. Smith’s department is more successful than ail the others.
D．Mr. Smith is seldom in his office.
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.
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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