单项选择题

The underlined word" burnout" (Par

A．5) here refers to the state of______.A. being seriously burnt in the skin.B. being unable to burn for lack of fuelC. being badly damaged by fireD. being unable to function because of excessive use

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单项选择题

People who are cognitively healthy are those______.

A．whose minds are alert and receptive
B．who are highly intelligent
C．who can remember large amounts of information
D．who are good at recognizing different sounds

单项选择题

The findings of James and other scientists in their work______.

A．remain a theory to be further proved
B．have been challenged by many other experts
C．are practiced by the researchers themselves
D．have been generally accepted