题目

________ Yao Ming has retired from the NBA，the pleasure we have got by watching him play basketball at home and abroad will last long. A．Although　   B．If C．Since　  D．Once 答案：解析：　分析句子结构并结合句意可知，逗号前的内容在句子中作让步状语。A项意为“虽然”；B项意为“如果”；C项意为“自从，因为”；D项意为“一旦”。 答案：　A

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