Warmblooded animals live an active life even in freezing winter,which helps them to________their nor

题目简介

Warmblooded animals live an active life even in freezing winter,which helps them to________their nor

题目详情

Warmblooded animals live an active life even in freezing winter,which helps them to________their normal body temperature.
[     ]
A.keep up 
B.build up
C.bring up  
D.pick up
题型:单选题难度:中档来源:同步题

答案

A

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