题目内容

阅读理解

A Train Floating On Air

　　A train that floats on air? It's not magic－it's magnets(磁)．And it's close to reality．

　　In Virginia USA the fall of 2002, a train with no wheels traveled on air and carried college students across their campus．In Japan, a whisper-quiet railway engine hovered and raced at 350 miles per hour using magnets and electricity as the power．And in China, a magnet train line linked Shanghai with nearby Pudong Airport．

　　These trains use magnetic levitation(悬浮)technology, “maglev” for short．They use the same rules as the magnets you pick up at home or school：opposite poles of magnets attract each other, and like poles repel each other．

　　How does it work?

　　Powerful magnets on the bottom of train repel magnets on the track, which is actually just a magnet-filled guiding way．With a magnetic field of sufficient force, the train will go hovering on air, which seemed impossible to us in the past．

　　When an electrical current is sent through the track, the train moves．Turn the current backwards and the train slows down．

　　Maglev doesn't rely on the friction(摩擦力)of wheels on track, so it can climb a much steeper hill than a traditional train．And it can travel easily in snow and ice, something that could bring normal trains to a screaming stop．

(1)

This passage is about ________．

[　　]

A．

maglev

B．

magnets

C．

levitation

D．

electricity

(2)

Which of the following is a repelling action?

[　　]

A．

B．

C．

D．

(3)

What can we learn from the text?

[　　]

A．

A magnet-filled guiding way is formed inside a maglev train．

B．

Instead of electricity, magnets are used as the power of a maglev．

C．

Maglev trains can climb hills with the help of magnet wheels．

D．

Electric currents decide the movements of a maglev train．

(4)

What is the difference between a maglev train and an ordinary train?

[　　]

A．

A maglev train can climb mountains without power while an ordinary one can't．

B．

A maglev train can travel in college campus while an ordinary train is not allowed．

C．

Travelling without a track, a maglev train is safer and smoother than an ordinary one．

D．

Floating on a track, a maglev train is faster, quieter than an ordinary, railway train．

答案：1．A;2．B;3．D;4．D;
解析：

(1)

主旨大意题。本文主要介绍了磁悬浮列车的运行原理及主要优点，因此不难判断出答案是A。

(2)

难。图形识别题。根据对磁悬浮列车的运行原理的介绍，可知答案应选择B。

(3)

细节题。根据第6段When an electrical current is sent through the track, the train moves．Turn the current backwards and…说明磁悬浮列车的运行是受电控制的。

(4)

　　解析：细节归纳题。因为磁悬浮列车不是在轨道上运行的，不会受到与轨道的摩擦，因此它的速度较普通列车快且不会发出噪声。

　　文章大意：磁悬浮列车是当今世界上最先进的交通工具，本文主要介绍了磁悬浮列车的运行原理及主要优点。


练习册系列答案
相关题目

阅读理解

　　“Who made your T-shirt?” A Geo etown University student raised that question．Pietra Rivoli, a professor of business, wanted to fin the answer．A few weeks later, she bought a T-shirt and began to follow its path from Texas cotton form to Chinese factory to charity bin(慈善捐赠箱)．The result is an interesting new book, The Tra ’s of a T-shirt in the Global Economy(经济)．

　　Following a T-shirt around the world in a way to make her point more interesting, but it also frees Rivoli from the usual arguments over gobal trade．She goes wherever the T-shirt goes, and there are surprises around every corner．In China, Rivoli shows why a clothing factory, even with its poor conditions, means a step toward a better e for the people who work there．In the colorful used-clothing markets of Tanzania, she realizes, th “it is only in this final stage of life that the T-shirt will meet a real market,” where the price of a shirt changes by the hour and is different by its size and even color．Rivoli’s book is full of mem able people and scenes, like the noise, the bad air and the “muddy-sweet smell(泥土香味)of the cotton．”She says, “Here in the factory, Shanghai smells like Shallowater Texas．”

　　Rivoli is at her best when making those sorts of unexpected connections．She even finds one between the free traders and those who are against globalization．The chances opened up by trade are vast, she argues, but free markets need the correcting force of politics to keep them in check．True economic progress needs them both．

(1)

What do we learn about Professor Rivoli?

[　　]

A．

She used to work on a cotton farm．

B．

She wrote a book about world trade．

C．

She wants to give up her teaching job．

D．

She wears a T-shirt wherever she goes．

(2)

By saying T-shirt “meet a real market”, Rivoli means in Tanzania ________．

[　　]

A．

cheaper T-shirt are needed．

B．

used T-shirt are hard to sell

C．

prices of T-shirt rise and fall frequently

D．

prices of T-shirt are usually reasonable

(3)

What does the word “them” underlined in the last paragraph refer to?

[　　]

A．

Free-markets．

B．

Price changes．

C．

Unexpected connection．

D．

chances opened up by trade．

(4)

What would be the best title for the text?

[　　]

A．

What T-shirt Can Do to Help Cotton Farms

B．

How T-shirt Are Made in Shanghai

C．

How T-shirt Are Sold in Tanzania

D．

What T-shirt Can Teach Us

阅读理解

　　Most American students go to traditional public schools．There are about 88,000 pub-lic schools all over the US．Some students attend about 3000 independent public schools called charter schools．

　　Charter schools are self-governing．Private companies operate some charter schools．They are similar in some ways to traditional public schools．They receive tax money just as other public schools do．Charter schools must prove to local or state governments that their students are learning．These governments provide the schools with the agreement called a charter that permits them to operate．

　　Charter schools are different because they do not have to obey most laws governing tra-ditional public schools．Local, state or federal governments cannot tell them what to teach．Each school can choose its own goals and decide the ways it wants to reach them．Class size is usually smaller than in traditional public schools．

　　The Bush Administration strongly supports charter schools as a way to re-organize pub-lic schools that are failing to educate students．But some education agencies and unions op-pose charter schools．One teachers' union has just made public the results of the first nation-al study comparing the progress of students in traditional schools and charter schools．

　　The American Federation of Teachers criticized the government's delay in releasing the results of the study, which is called the National Assessment of Educational Progress．U-math education experts say the study shows that charter school students performed worse on math and reading tests the students in regular public schools．

　　Some experts say the students is not a fair look at charter schools．because students in those schools have more problems than students in teaditional schools．Other education experts say the study results should make charter school officials demand improved student progress．

(1)

If a private company wants to operate a charter schools, it must ________．

[　　]

A．

try new methods of teaching

B．

prove its management ability

C．

obey the local and state laws

D．

get the government's permission

(2)

Charter schools are independent because ________．

[　　]

A．

they make greater progress

B．

their class size is smaller

C．

they enjoy more freedom

D．

they oppose traditional ways

(3)

What's the government's attiude toward charter schools?

[　　]

A．

Doubtful．

B．

Supportive．

C．

Subjective．

D．

Optimistic．

(4)

What can we learn from the text?

[　　]

A．

More students choose to attend charter schools．

B．

Charter schools are better than traditional schools

C．

Students in charter schools are well educated．

D．

People have different opinions about charter schools．

(5)

It can be inferred from the text that ________．

[　　]

A．

charter schools are part of the public education system

B．

one-on-one attention should be paid to students

C．

the number of charter schools will be limited

D．

charter schools are all privately financed

违法和不良信息举报电话：027-86699610 举报邮箱：58377363@163.com

精英家教网