直接写出得数。+= -= += -=++= ++= 1++= += 答案:【答案】1;;;;;;1【解析】根据同分母分数加减法,即分子与分子相加减做分子,分母不变,以此解答即可。+=1;-=;+=;-=;++=;++=;1++=;+=18.____________ does it take her to get to school?It takes her about ________ minutes.( )A.How far,twenty-fiveB.How long,twenty-fiveC.How far,twenty fiveD.How long,twenty five