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Have you ever heard an echo of your voice? An echo is a reflected(反射)sound. Stand in a very large, empty hall with nothing on the walls. Then shout. The so-九年级英语
[db:作者]  2019-11-12 00:00:00  零零社区

题文

Have you ever heard an echo of your voice?
An echo is a reflected(反射)sound. Stand in a very large, empty hall with nothing on the walls. Then shout. The sounds you make will hit the walls and come back to you. The walls reflect the sounds. These reflected sounds are called “echoes”.
We can use reflected sound to make sound travel farther. Hold a watch about fifty centimeters from your ear. You cannot hear it. The sound of the watch travels a short way in all directions. It does not travel as far as your ear. You can make it travel to your ear by using a roll of cardboard(纸板筒).
Make the roll of cardboard about fifty centimeters long. Put one end over your ear and hold the watch at the other. Now you can hear the watch because the sound has not gone in all directions. It is reflected down the roll to your ear.
A megaphone(喇叭筒)works in the same way. It makes sound travel farther. It reflects the sound into a beam which can travel a long way. In the ship, the sailor uses the megaphone to make his voice travel. Without the megaphone, his voice cannot travel far.
We use reflected sound in many ways. We use it to measure the depth of the sea, for example. Among the animals, bats and whales use reflected sound to tell them where they are and what things are near them.
小题1: Which is the right order of hearing our echo in a very large, empty hall?
a. We hear the reflected sound       b. The sound returns to us  
c. The sound hits the walls          d. We make a sound
A．c, b, a, dB．c, a, b, dC．d, c, b, aD．d, b, c, a
小题2:. From the text we learn that __________ .
A．reflected sound is useful only to blind people
B．people haven’t made use of reflected sound yet
C．bats use reflected sound to fly and get food
D．whales don’t use reflected sound as they live in the sea
小题3: If you haven’t got a megaphone, ____ will help you to make your voice travel farther.
A．a long piece of woodB．a roll of cardboard
C．a thin threadD．a long piece of silk

题型：阅读理解  难度：偏难

答案


小题1:C
小题2:C
小题3:B 


小题1:理解排序题，根据文中语句理解可知。
小题2:细节理解题，根据文中语句“Among the animals, bats and whales use reflected sound to tell them where they are and what things are near them.”理解可知。
小题3:细节理解题，根据文中语句“You can make it travel to your ear by using a roll of cardboard”理解可知。

据专家权威分析，试题“Have you ever heard an echo of your voice? An echo is a ref..”主要考查你对  广告布告类阅读  等考点的理解。关于这些考点的“档案”如下：

广告布告类阅读

考点名称：广告布告类阅读

  • 这类阅读的文本主要选取的是广告、布告类的文本类型，贴近生活和实事，时尚元素较多。因此他相对来说距离学生生活较近，对学生的时事敏感度要求也比较高。

  • 广告布告类阅读注意事项：
    1. 品味广告的标题，联系平时所积累的知识，为了解材料大意作铺垫。
    2. 要特别留意广告中包含的数字、联系人、地址等。
    3. 要注意文中以黑体、大写、下划线等方式加以提示的文字，因为这很有可能是材料的核心或至少是一部分内容的概括。



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