【題目】一位中國(guó)小朋友在放暑假前寫(xiě)了三封信,分別邀請(qǐng)美國(guó)、澳大利亞、巴西的三位小朋友到緯度40°、經(jīng)度116°的地方一同度假旅游。他們按照信中所寫(xiě)的經(jīng)緯度能聚會(huì)到一起嗎?可能發(fā)生什么差錯(cuò)_____________________________________________________________ _________________________________________________________________。

【答案】題干中的地理坐標(biāo)沒(méi)有寫(xiě)明東經(jīng)、西經(jīng)和南緯、北緯,這樣聚會(huì)的地點(diǎn)可能有4個(gè),即40°N、116°E;40°N、116°W;40°S、116°E;40°S、116°W.因此他們聚會(huì)到一起的可能性很小,可能分散到四個(gè)地點(diǎn).

【解析】試題由題目可知,中國(guó)朋友邀請(qǐng)三位外國(guó)朋友到緯度40°、經(jīng)度116°的地方,一同度假旅游,緯度40°包括北緯40°和南緯40°,經(jīng)度116°包括東經(jīng)116°和西經(jīng)116°,這樣的地方有四個(gè),所以不能聚集到一起。

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