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题目内容
（上海开放大学-大学英语2）
当他们沿着海滩跑的时候，听到一声枪响。
While they were running along the beach, they heard a gunshot.
A) 正确
B) 错误
While they were running along the beach, they heard a gunshot.
A) 正确
B) 错误
参考答案
