题目

For most of human history, people thought the world was flat. That is, they thought that if you traveled far enough in one direction, you would eventually come to the edge of the world. Then about two thousand years ago, people started to come up with the theory that the earth was round. This meant that by traveling far enough in a straight line, you would eventually come back to where you started.It wasn’t until the 16th century that Ferdinand Magellan’s expedition became the first to travel around the world. The expedition first sailed west from Portugal, around South America, across the Pacific, before returning around South Africa back to Portugal.What does the theory that the earth is round imply if traveling straight far enough?A You would return to where you ended.B You would return to where you started.C You would come to the edge of the world.

For most of human history, people thought the world was flat. That is, they thought that if you traveled far enough in one direction, you would eventually come to the edge of the world. Then about two thousand years ago, people started to come up with the theory that the earth was round. This meant that by traveling far enough in a straight line, you would eventually come back to where you started. It wasn’t until the 16th century that Ferdinand Magellan’s expedition became the first to travel around the world. The expedition first sailed west from Portugal, around South America, across the Pacific, before returning around South Africa back to Portugal. What does the theory that the earth is round imply if traveling straight far enough? A You would return to where you ended. B You would return to where you started. C You would come to the edge of the world.

题目解答

答案

我们来一步一步地分析这道题目：

题目内容理解：

题干中提到：

  • 在人类历史的大部分时间里，人们认为世界是平的，也就是说，如果你朝一个方向一直走，最终会走到世界的边缘。
  • 大约两千年前，人们开始提出地球是圆的（球形）的理论。
  • 这个理论意味着：如果你一直朝一个方向直线行走，最终你会回到你出发的地方。
  • 后来在16世纪，麦哲伦的探险队第一次完成了环绕地球的航行，证明了地球是圆的。

题目问的是：

> What does the theory that the earth is round imply if traveling straight far enough?

翻译成中文是：

> 如果地球是圆的，那么一直朝一个方向直线行走足够远，会带来什么结果？

选项分析：

  • A. You would return to where you ended.
    你将回到你结束的地方。
    ❌ 不合逻辑。你还没结束，怎么会回到“结束的地方”？

  • B. You would return to where you started.
    你将回到你出发的地方。
    ✅ 这正是“地球是圆的”这个理论的直接推论：如果你一直朝一个方向走，最终会绕地球一圈，回到起点。

  • C. You would come to the edge of the world.
    你将走到世界的边缘。
    ❌ 这是“地球是平的”这一理论的观点，不是“地球是圆的”的推论。

正确答案：

$\boxed{B}$

总结：

题目考察的是对“地球是圆的”这一理论的理解。如果地球是圆的，那么一直朝一个方向直线行走，最终会绕地球一圈，回到起点，而不是走到世界的边缘。