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[冲刺中考]英语阅读与填空:22-Tuesday 回声 219词

所属教程:英语阅读理解与完形填空(中考冲刺)

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2023年01月09日

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22-Tuesday 回声 219词

题材: 回声  词数: 219  建议阅读时间: 4.5分钟

阅读下面的短文,选择正确答案。

Have you ever heard an echo of your voice?

An echo is a reflected 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.

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 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.

生词

echo n. 回声:The echoes of his scream sounded in the cave for several seconds.他的尖叫声在洞中回荡了好几秒。

reflect v. 反射:A mirror reflects light.镜子反射光。

roll n. 卷筒状物:a toilet roll手纸卷

cardboard n. 硬纸板:We covered the hole with a sheet of cardboard.我们用一张硬纸板盖住洞口。

megaphone n. 麦克风,话筒:The police chief addressed the huge crowd through a megaphone.警察局局长通过话筒向密集的人群喊话。

beam n. 光束,波束:a laser beam激光束

1.What is called“echo”?

A.Very loud voices.

B.Very loud voices that are made by man.

C.Very loud voices that are made by animals.

D.The sound that is made by man or animals comes back from some place.

2.We can hear our echoes if we ________.

A.shout in a small room

B.shout in a large house full of things

C.shout in narrow valleys

D.shout in the open air

3.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 d

B.c a b d

C.d c b a

D.d b c a

4.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

5.If you haven't got a megaphone,________will help you to make your voice travel farther.

A.a long piece of wood

B.a roll of cardboard

C.a thin thread

D.a long piece of silk

参考译文

你听到过自己的回声吗?

回声是经过反射的声音。站在一间空无一人、墙上没有东西的大礼堂里大叫,你发出的声音碰到墙壁,就会反射到你那里。墙反射声音。那些被反射回的声音就叫做“回声”。

我们可以利用回声让声音传播得更远。把一只手表举在距离你耳朵50厘米远的地方,你听不到它的响声。手表的声音向四面八方传播时,只能走很短的距离。它到达不了你耳朵那么远。你可以把纸板卷成筒状,以此让手表的声音传播到你耳朵里。

把纸板筒做成50厘米长。一端扣在耳朵上,把手表放在另一端。现在你能听到手表的声音了,因为声音没有向四面散开。它沿着卷筒反射到了你的耳朵里。

麦克风的工作原理就是这样。它能让声音传播得更远。它把声音反射成一束,这样就能传播很远的距离。船上的水手用麦克风让自己的声音传播出去。没了麦克风,他的声音传不了多远。

我们在许多方面利用回声。比如,我们用它测量海水的深度。动物中的蝙蝠和鲸都能利用回声来确定自身所处的位置,判断周围有什么东西。

参考答案

Tuesday 1.D 2.C 3.C 4.C 5.B


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