单项选择题

Human beings make themselves different from other animals by ________.

A．having the ability to perceive danger
B．having a far greater memory capacity
C．having the ability to recognize faces and places on sight
D．having the ability to draw on past experiences

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单项选择题

According to the passage, memory is helpful in one's life in the following aspects EXCEPT that ________.

A．it involves a change in one's behavior
B．it keeps information for later use
C．it warns people not to do things repeatedly
D．it enables one to remember events that happened in the past