题目

—Waiter! —Yes? —Three_________,please. A.cup of coffee               B.coffee cups C.coffees                    D.coffee 答案:C脱式计算,能简算的要简算. (1)5.12×14+2.875÷4             (2)1999+999×999 (3)48-(32÷83-125)          (4)11×11×11-11×11 (5)910-58-18 (6)12+16+112+120+130.
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