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A heart is being exercised beats more quickly than a heart that is at rest. Thus

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A heart is being exercised beats more quickly than a heart that is at rest. Thus

A heart ________is being exercised beats more quickly than a heart that is at rest. Thus a sleeping person has a ________heartbeat.

A.when; warmer

B.that; slower

C.who; higher

D.what; much slower

试题答案

B