单项选择题

There is a misunderstanding that ______.

A．sharks can discover a diver by the movement of his hands in water
B．sharks have very strong sense of smell
C．sharks have poor eyesight
D．sharks are great threats to divers

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热门试题

单项选择题

The Greeks call sharks hounds of the sea because ______.

A．they can follow a scent just like clogs
B．they can move swiftly under the sea
C．they are hostile to divers
D．they have very strong basic instincts

单项选择题

The best title for the passage is ______.

A．The Mysteries of Animal Communication
B．Something Unknown About Sharks
C．An Adventure
D．How Divers Discover Sharks Under the Sea