显微血管外科术后，患者应注意保暖，室温应在（）
A.15℃左右
B.20℃左右
C.25℃左右
D.30℃左右
E.35℃左右
参考答案：C
价值链
Which toy would be most appropriate for a 3-year-old
A．A bicycle.
B．A puzzle with large pieces.
C．A pull toy.
D．A computer game.
