题目请把下列各数填入相应的集合中:7,227,0.25,0,−14,−6,−0.25,−∣−2∣,0.37,\frac{22}{7},0.25,0,-\frac{1}{4},-6,-0.25,-|-2|,0.37,722,0.25,0,−41,−6,−0.25,−∣−2∣,0.3.分数集合:{______}\{ \_\_\_\_\_\_\}{______}；正数集合:{______}\{ \_\_\_\_\_\_\}{______}；非负整数集合:{______}.\{ \_\_\_\_\_\_\}.{______}.知识点：绝对值（二）章节：第1章 有理数 / 1.2 有理数 / 1.2.4 绝对值
