单项选择题

The hawkmoth escaped the attack from the sparrow because ______.

A．an owl came to its rescue
B．the sparrow suddenly saw a hunter's eyes
C．the sparrow was suddenly attacked by another bird
D．the moth showed eye-like marking on its wings

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单项选择题

A．atB．byC．onD．in

A．at
B．by
C．on
D．in

单项选择题

Which is the main idea of the last paragraph

A．The reason why eyespots work.
B．The reasoning power of some animals.
C．A defective faculty of perceiving.
D．The eyespots of butterflies.