【題目】在野外考察時不能用來辨別方向的是( )

A. 樹干年輪 B. 流星 C. 北極星 D. 指南針

【答案】B

【解析】試題分析:在野外考察如果迷失方向,可以通過樹干年輪、北極星、指南針等辨別方向,流星不能辨別方向。故選B

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