Bridges are built over roads，rivers，or railways.They appeared a long time ago.Back then，they were built with stones，ropes，logs，and vines.Some were very simple，like a footbridge made out of a big tree.But today，bridges are bigger，stronger，and more modern.This is because we have better technology today.
Bridges are a mix of maths，physics，design，and architecture.They are designed by skilled engineers and they take years to build.
Bridges must be so strong that they can support not only their own weight，but also the weight of the people and vehicles（交通工具）.People build it in a way that protects them from earthquakes，strong winds，and freezing.
The three main types of bridges are arch，beam and suspension.Let's take a closer look at each one.
Arch（拱）bridges were invented a long time ago by the Romans.They were built out of stone or brick，and stood on support structures in the shape of arches.Beam bridges are horizontal（水平的）beams supported by columns.These bridges are very old as well.Suspension bridges have a tower（索塔）on either side.The towers are connected by cables.They are more modern，with the first ones being used in the early 19th century.
People all know that the oldest bridge in the world is the Zhaozhou Bridge in China.It's an arch bridge made out of stone that was built in 605 A.D.But if you're looking for the world's longest bridge，it would be the Danyang-kunshan Grand Bridge.It is also in China.It has a length of over 164.85 kilometres!
（1）Bridges have a long history.In the past，some were very simplesimplebut now they are bigger，stronger，and more modern because of with the help ofbecause of with the help of today's better technology.
（2）The bridges must be strong enough tostrong enough tosupport the weight of the people，vehicles and themselves.They are built in a way that protects them from natural disasters/dangersnatural disasters/dangers like earthquakes，strong winds，and freezing.
（3）The passage tells us about threethree types of bridges including arch，beam and suspensionarch，beam and suspension.
（4）A long time ago，The Romans used stone or brick to buildto buildarch bridges.The first suspension bridges have been used/have been in usehave been used/have been in usesince the early 19th century.
（5）The Zhaozhou Bridge is famous/known asfamous/known asthe world's oldest bridge while the Danyang-kunshan Grand Bridge is the longest one.They are bothbothin China!
【答案】simple；because of with the help of；strong enough to；natural disasters/dangers；three；arch，beam and suspension；to build；have been used/have been in use；famous/known as；both
【解答】
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聲明：本試題解析著作權(quán)屬菁優(yōu)網(wǎng)所有，未經(jīng)書面同意，不得復(fù)制發(fā)布。
發(fā)布：2024/6/27 10:35:59組卷：10引用：1難度：0.7
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根據(jù)短文和圖表內(nèi)容，選擇最佳答案。
（1）Which of the following groups are surveyed in the passage？
A．Students at the age of 14.
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C．Students at the age of 17.
D．Students at the age of 8.
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B．1 to 3 hours
C．more than 4 hours
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B．1 to 3 hours
C．more than 4 hours
D．a(chǎn)n hour
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A．Eating more fruit.
B．Reading on line.
C．Going to the park.
D．Working hard on schoolwork.
（5）Which of the following statements is true？
A．The survey only shows the time spent chatting online.
B．For all the students，chatting on the Internet is more popular than playing computer games.
C．Compared with chatting online，girls prefer playing computer games.
D．Most of the girls play computer games for less than an hour.發(fā)布：2024/12/18 5:0:1組卷：6引用：3難度：0.6 -
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