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中学一年级 · 阅读系列

Lesson 25 · The Sound Behind the Door

文体:科普短文 · 朗读音轨 25

本课插图:The Sound Behind the Door

先听一遍

边听边想:为什么能听到关着的门后面的声音?

展开英文短文,再悬停查词

Someone knocks on a door. You cannot see the person, but you can hear the sound. A knock makes the door vibrate. The vibration makes nearby air move, and the sound travels to your ears.

Sound can move through air, water, and solids. It needs matter to carry its energy, so it cannot travel through empty space. A thick door may reduce the sound, but some vibrations still pass through it.

逐句跟读

点击任意一句听 Dicvo 的 Jenny 英语语音;开始连续播放前可选择每句播放次数。同一句的每遍之间、切换到下一句之前,都会留出约一遍句子时长供你跟读。原有整篇朗读仍可在上方播放。

请选择一句开始。

  1. Someone knocks on a door.

  2. You cannot see the person, but you can hear the sound.

  3. A knock makes the door vibrate.

  4. The vibration makes nearby air move, and the sound travels to your ears.

  5. Sound can move through air, water, and solids.

  6. It needs matter to carry its energy, so it cannot travel through empty space.

  7. A thick door may reduce the sound, but some vibrations still pass through it.

读懂了什么?

读完后,试着用一句话说出本文的主要意思,并从原文找出支持它的一句话。

查看中文译文

有人敲门。你看不到那个人,却听得到敲门声。敲击使门振动;门的振动又带动附近的空气,声音于是传到你的耳朵。

声音可以在空气、水和固体中传播。它需要物质来传递能量,无法穿过完全空无一物的空间。厚门可能使声音变小,但仍会有一些振动传过去。

本课重点词语

以下是本课重点词语的中文讲解;英文正文中有虚线的单词可悬停查看词义和发音。

knock
敲;敲门。
hear
听见;与强调主动倾听的 listen 有区别。
sound
声音。
vibrate
振动。
nearby
附近的;在附近。
travel
传播;旅行。本文指声音传播。
solid
固体;能够保持形状的物质。
carry
携带;传递。
energy
能量。
empty space
空无一物的空间。
背景知识

声音是物质的振动依次传开的波。因此,在近乎真空的太空中,人的声音不能直接传播。电影里的宇宙飞船内有空气,所以人们可以交谈;飞船外的声音在现实中则无法像电影里那样传播。

资料来源:NASA 关于声音的教育资料。

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