摘要：12．On the exhibition, he all his collecting stamps to the visitors all over the country. A. showed off B. speeded up C. brought in D. gave out A 考查动词短语的区别. show off 意为“卖弄,出示给某人看,展示 .符合题意,speed up“加速 ,bring in“带进.赚的 ,give out“分发.泄露 .

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