单项选择题

Why do many scientists think animals are basically sleepwalkers

A．Because animals learn to carry out complex actions.
B．Because animals are trained to carry out complex actions.
C．Because animals carry out complex actions in response to stimuli.
D．Because animals carry out complex actions without awareness.
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单项选择题
What's the topic in this passage A) Animal consciousness. C) Tool use by animals. B) Animal behavior. D) Signs of animal intelligence.
A．What's the topic in this passage
B．Animal consciousness.
C．Animal behavior.
D．Tool use by animals.
E．Signs of animal intelligence.
单项选择题
What does the last sentence of the passage mean
A．It's easy to understand animal consciousness.
B．It's easy to understand animals have consciousness.
C．It's sensible to believe in animal consciousness.
D．It's sensible to believe animals have consciousness.
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