单项选择题
A.-4℃B.-5℃C.-6℃D.-8℃
A.72，-18B.24，-18C.24，-23D.72，-23
A.4℃B.8℃C.10℃D.25℃
A.0.3%、0.4%、0.2%B.0.2%、0.3%、0.4%C.0.3%、0.2%、0.4%D.0.2%、0.4%、0.3%
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