{01}_____ have an internal clock that controls the beating of our heart, and the _____ of our breathing. A.Human being; steps B.Humans; pace C.Human beings; steps D.Man; pace 解析: 本题选B。
{02}Children and old people do not like having their daily _____ upset. A.habit B.routine C.practice D.custom 解析: 本题选B。
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