单项选择题

One possible benefit of the experiment discussed in the passage is ______.

A．less crowded cities
B．victory over death
C．protection against fatal injury
D．fewer deaths from heart attacks
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单项选择题
What's the best title of this passage
A．The difference between biological and clinical death.
B．The process of dying.
C．Prolonging the period of clinical death.
D．The nature of clinical deat
单项选择题
According to the passage, the function of cooling an organism is to ______.
A．speed up the body's metabolism
B．slow down disintegration of body tissues
C．prevent damage to organs
D．revive damaged organs
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