摘要： warm up
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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
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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
Warm??blooded 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
查看习题详情和答案>>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 |