他在社交媒体上发布了一条危言耸听的帖子，声称世界末日即将到来。
He posted an ___alarmist message on social media, claiming the end of the world was near.
别理会那些总是预言世界末日的危言耸听者。
Ignore those ___alarmists who always predict the end of the world.
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