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单选题 请根据听力内容完成相应选项选择小题:<iframe src="/ananas/common-modules/audioplay/audioplay.html?objectid=c7a357243e1942c4a3042e4e2a0e0613"></iframe>

A. Smoke signals will be used to communicate

B. Light signals will be used to communicate

C. Whistles will be used to communicate

D. Flag signals will be used to communicate

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学科：默认课程

时间：2025-10-29 02:06:39

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