题目

At the railway station, the mother waved goodbye to her daughter until the train was _______. A. out of sight      B. out of reach      C. out of order    D. out of place 答案:A 解析: 句意:“在火车站,母亲一直挥手同女儿告别直到火车远到看不见。故正确答案为A。 “out of reach”“手不能及,非某人能力所及”;“out of order”“出故障,工作不正常”;“out of place”“不在适当的地方,不适当的”(2011?泸县模拟)M÷N=4,其中M、N为非零自然数,M、N中最小公倍数是MM,最大公因数是NN.
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