如果地图上量得两地间的直线距离为3厘米，图上比例尺1：1000000，算得两地间实地距离大约是（　　）

阅读下面一则材料，从中你发现了什道理?写出你探究的结果。（至少写出两点）

       一只狼吃饱了，安逸地躺在草地上睡觉，另一只狼气喘吁吁地从它身边跑过，这使它十分惊奇，它问：“你在追赶羚羊吗?”

       “没有!”“有人在追赶你吗?”“没有!”“那你为什么没命地奔跑呢?”那只狼说：“听说狮子要来了。”

       听了这话，它放下心来：“狮子是我们的朋友，有什么可怕的呢？你去跑你的吧，我要睡觉了。”

       后来，狮子真的来了。由于它的到来，整个草原上的羚羊的奔跑速度变得极快，这只狼不再那么容易得到食物了，不久便饿死了。临死前它不住地怨恨，认为是狮子破坏了自己宁静的生活。

    The sun comes up in the east and goes down in the west. When the sun rises， It is morning. When the sun sets， it is evening. When the sun is shining， it is day. Morning is the time between sunrise and twelve o'clock， or between sunrise and lunch. At twelve o'clock， the sun is the highest in the sky over our heads. The sun is overhead at noon. The sun shines during（在……期间）the day. The moon and the stars shine during the night. When the sun rises， it is light. It's light during the day. During the night， if the moon is not shining， it is dark. What are the days and nights like in summer? In summer the days are longer and the nights are shorter. What about in winter? In winter， the days are shorter and the nights are longer.