题目

I need ________ bananas to make fruit salad. Could you please buy some?A.fewB.a fewC.littleD.a little 答案:B解析:略两个有理数相加,若它们的和小于每一个加数,则两个加数(  )A.都是正数B.都是负数C.互为相反数D.两数异号
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