填空题

Putting screens over the dam’s drainage holes turned Out to be a fatal mistake —a major error that led to the bursting of the dam.

【参考答案】

N

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填空题

Few people believed the dam had been burst because there had been too many false alarms.

问答题

幽默能体现个性2．幽默有益于身心健康3．幽默能融洽与他人的关系 Why a Sense of Humor Is Important