Sound travels ______ air ______ a speed of about 340 metres per second.
| A．over; in | B．through; at | C．by; at | D．through; over |
阅读快车系列答案科目：初中英语 来源：2013届江苏省泰兴市实验初级中学九年级下学期第一次模拟考试英语试卷（带解析） 题型：阅读理解
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】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. |
| A．shout in a small room |
| B．shout in a large house full of things |
| C．shout in narrow valleys(山谷) |
| D．shout in the open air |
| A．c, b, a, d | B．c, a, b, d | C．d, c, b, a | D．d, b, c, a |
| 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 |
| A．a long piece of wood | B．a roll of cardboard |
| C．a thin thread | D．a long piece of silk |
查看答案和解析>>
科目：初中英语 来源：2012届江苏省无锡市育才中学九年级下学期期中考试英语试卷（带解析） 题型：阅读理解
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, d | B．c, a, b, d | C．d, c, b, a | D．d, b, c, a |
| 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 |
| A．a long piece of wood | B．a roll of cardboard |
| C．a thin thread | D．a long piece of silk |
查看答案和解析>>
科目：初中英语 来源：2012-2013学年江苏省泰兴市九年级下学期第一次模拟考试英语试卷（解析版） 题型：阅读理解
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.
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(山谷)
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
查看答案和解析>>
科目：初中英语 来源：2011-2012学年江苏省无锡市九年级下学期期中考试英语试卷（解析版） 题型：阅读理解
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.
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, d |
B．c, a, b, d |
C．d, c, b, a |
D．d, b, c, a |
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 |
3. 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 |
查看答案和解析>>
科目：初中英语 来源：2011年初中毕业升学考试（江苏无锡卷）英语（解析版） 题型：其他题
用括号内所给动词的适当形式填空
1.Xiao Li promised to chat with me on the Internet, but so far he __________ (not do) so.
2.At the moment we have too much to do __________ (think) of doing anything else.
3.Last Friday afternoon the young man __________ (hurt) in the traffic accident which happened on the highway.
4.Sound __________ (travel) through air at a speed of about 340 meters per second.
5.Food cannot __________ (keep) properly in a fridge at an unsuitable temperature.
6.The snow __________ (stop) when she woke up and the sun was shining brightly.
7.Every one of us was excited, for in a few minutes we __________ (see) Liu Xiang appear on the sports ground.
8.The Women’s World Cup __________ (not begin) until 1991 when China hosted it in Guangzhou.
9.Understanding yourself is very important to __________ (build) self-confidence.
10.On Earth, gravity keeps our feet on the ground and makes anything we drop __________ (fall) towards the ground.
查看答案和解析>>
湖北省互联网违法和不良信息举报平台 | 网上有害信息举报专区 | 电信诈骗举报专区 | 涉历史虚无主义有害信息举报专区 | 涉企侵权举报专区
违法和不良信息举报电话：027-86699610 举报邮箱：58377363@163.com
