摘要: The child enjoyed up the wooden bricks then knocking them down. A. adding B. pushing C. piling D. forming[答案] C. piling. [注释] pile up (=lay in a pile or as if in a pile) 把......放成一堆, 堆积:pile up the books on the table .Pile up作不及物动词用, 意为"积压; 相撞":1) Perishable goods are piling up at the docks. (码头上易腐烂的货物堆积如山.) 2) Several cars piled up after ignoring the fog warning on the motorway. (由于无视高速公路上的大雾警告, 有好几辆汽车相撞.)

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