题目

Eating too much fat can             heart disease and cause high blood pressure. A. result from  B. contribute to      C. distribute to              D. devote to 答案:B7.把下列各数写在相应的集合里-5,10,-4$\frac{1}{2}$,0,+2$\frac{1}{2}$,-2.15,0.01,+66,-$\frac{2}{5}$,15%,$\frac{3}{102}$,2003,-16正整数集合:10,+66,2003负整数集合:-5,-16正分数集合:+2$\frac{1}{2}$,0.01,15%,$\frac{3}{102}$负分数集合:-4$\frac{1}{2}$,-2.15,-$\frac{2}{5}$整数集合:-5,10,0,+66,2003,-16负数集合:-5,-4$\frac{1}{2}$,-2.15,-$\frac{2}{5}$,-16正数集合:10,+2$\frac{1}{2}$,0.01,+66,15%,$\frac{3}{102}$,2003.
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