单项选择题

A．It is a new kind of cell phone battery.
B．It is a kind of material which uses body heat to charge a battery.
C．It is a device that could generate electricity from body movement.
D．It is a device that collects body static electricity.
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Memories about the extreme experiences during a vacation will last for a long time.
单项选择题
A．They are afraid of facing the conflicts. B．They always meet some trouble in work. C．They feel hungry when they are angry. D．They don’t want to express their anger directly.
A．They are afraid of facing the conflicts.
B．They always meet some trouble in work.
C．They feel hungry when they are angry.
D．They don’t want to express their anger directly.
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