_______ the little girl was hit by a truck, nobody gave a hand to the girl ______ an old lady appeared. Why were they so cold-hearted?

A. When；while B. Before; until

C. After；until D. As； while

 

C

【解析】

試題分析：When當(dāng)……時；Before在……之前；until直到……；After在……之后；As隨著；while當(dāng)……時，強(qiáng)調(diào)主從動作同時進(jìn)行。句意：在這個小女孩被卡車撞到之后，直到這個老太太出現(xiàn)，沒有一個人伸出援手。他們怎么這么冷漠啊？結(jié)合語境可知選C。

考點(diǎn)：考查連詞辨析

 

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