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  考查動詞短語的區(qū)別。


解析:

show off 意為“賣弄；出示給某人看；展示”，符合題意；speed up“加速”；bring in“帶進，賺的”；give out“分發(fā)，泄露”。

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