看图回答问题．（1）上图是 统计图 （2）月平均气温最低的是 月（3）第四季度月平均气温最高是 摄氏度（4）从 月到 月气温呈连续下降趋势．
口算×6=+=×=×6=÷=÷= 1﹣=﹣=×4=÷=
直接写得数．×= 0×=÷=÷4= 12÷= 0.3×=×÷×= 0×+=
直接写出得数 21×=÷2=×=÷=÷= 12÷= 1÷=×0=
直接写得数． 20×=÷=×=÷6=×12=×=
直接写得数．×=﹣=×=×=÷=÷=÷=÷=
×6=
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= 1﹣
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