若a为有理数,求a的相反数与a的绝对值的和.
当a≥0时,-a+|a|=0,
当a<0时,-a+|a|=-2a.
综上所述,a的相反数与a的绝对值的和为0或-2a.
______________ in a white dress, the girl looks very pretty
A.Dressed
B.Dressing
C.To dress
D.Having dressed
虚劳诸不足,风气百疾,治宜()
A、大黄蟅虫丸
B、酸枣仁汤
C、薯蓣丸
D、小建中汤