单项选择题
A.5~10 B.5~20 C.2~10 D.2~15
A.8-10 B.9-11 C.9-10 D.11-12
A.8-10 B.7-8 C.9-10 D.11-12
A.20℃ B.24℃ C.20~24℃ D.25℃
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