試題詳解

22. "Whales and dolphins are known to send out clicking sounds and listen to the echoes. This suggests that they might find their prey in the same way that
(A)a rattlesnake finds a mouse in total darkness
(B) a salmon locates its home stream
(C) an owl locates a mouse in a dark bam
(D) an electric eel finds its prey in a muddy river
(E) bats navigate in dark caves