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 the 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.    

Which of the following is a repelling action?

       A.                        B.                        C.                        D.

     What can we learn from the text?

A. Electric currents decide the movements of a maglev train. 

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

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

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

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

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

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

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

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

A computer virus is a program or piece of code that is loaded onto your computer without your knowledge and runs against your wishes. All computer viruses are manmade. Here are some virus prevention tips.

Do not open any files attached to an e-mail from an unknown, suspicious or untrustworthy source.

Do not open any files attached to an e-mail unless you know what it is, even if it appears to come from a dear friend or someone you know. Some viruses can replicate（复制） themselves and spread through e-mail. Better be safe that sorry and confirm that they really sent it .

Do not open any files attached to an e-mail if the subject line is questionable or unexpected. If the need to do so is there always save the file to your hard drive before doing so.

Delete chain e-mails and junk e-mail. Do not forward（转寄） or reply to any of them. These types of e-mail are considered spam（垃圾邮件）, which contains lots of annoying advertisements and useless information.

Do not download any files from strangers.

Be careful when downloading files from the Internet. Ensure that the source is a legitimate（合法的）and reputable one. Verify（证实）that an anti-virus program checks the files on the download site. If you are uncertain, don’t download the file at all or download the file to a floppy（软盘）and test it with your own anti-virus software.

Update your anti-virus software regularly. Over 500 viruses are discovered each month, so you’ll want to be protected. These updates should be at least the products virus signature files. You may also need to update the product’s scanning engine as well.

   Back up（备份） your files on a regular basis. If a virus destroys your files, at least you can replace them with your backup copy. You should store your backup copy in a separate location from your work files, one that is preferably not on your computer.

This passage mainly tells us              .

A. What a computer virus is

B. how to use e-mail safely

C. how to use computers safely

D. how to prevent computer viruses

Which of the following statements about computer virus is TRUE?

A. A computer virus is a kind of worm

B. Not all computer viruses are manmade

C. Computer viruses run according to our wishes

D. A computer virus is a program or piece of code.

When we use e-mail, we should                .

A. open all the files we receive

B. open any file even if we don’t know what it is

C. not open any files if the subject line is questionable

D. forward or reply to junk e-mail.

Which of the following statements is NOT true?

A. We’d better not down load any files from strangers.

B. We’d better download files from a legitimate and reputable source.

C. We should update our anti-virus software regularly.

D. We should store our backup copy in the same location as our work files.

A young executive was traveling down a neighborhood street．He was watching for kids rushing out from between parked cars and slowed down when he thought he saw something．As his car passed，no children appeared．Instead，a brick smashed into his door! He slammed on the brakes(make his car stop)．The angry driver then jumped out of the car, caught the nearest kid and pushed him up against a parked car，shouting，“What was that all about and who are you?”

The young boy was apologetic．“Please，Mister．．．Please，I’m sorry…I didn’t know what else to do．I threw the brick because no one else would stop…”

With tears dripping down his face，the youth pointed to a spot just around a parked car．“It’s my brother，”he said．“He fell out of his wheelchair and I can’t lift him up．”

    Now sobbing(crying silently)，the boy asked the executive，“Would you please help me get him back into his wheelchair? He’s hurt and he’s too heavy for me．’’

   Moved beyond words，the driver tried to swallow the rapidly swelling lump in his throat．He hurriedly lifted the boy back into the wheelchair，then took out his fancy handkerchief and dabbed(a light touch) at the fresh scrapes and cuts．A quick look told him everything was going to be okay．“Thank you and may God bless you．”the grateful child told the stranger．

Shaken up for words，the man simply watched the little boy push his wheelchair—bound brother down the sidewalk toward their home．

   God whispers in our souls and speaks to our hearts．Sometimes when we don’t have time to listen，he has to throw a brick at us．Don’t go through life so fast that someone has to throw a brick at you to get your attention!

The executive slowed down because______.        .

A．he saw a boy throw a brick to his car         B．he saw a boy rush out from between cars

C．he was afraid some boys suddenly rushed out  D．a brick smashed into his door

The boy threw the brick to the car in order to_________.

A. disturb the driver on purpose    B．destroy the car of the stranger

C．ask someone to drive him home D．stop someone to help him

Knowing the reason why the boy threw the brick at his car the executive must feel       .

A．sympathized and excited   B．regretful and sympathized

C．ashamed and regretful     D．angry and regretful

After the boy’s brother feIl off his wheelchair,        .

A．the boy threw bricks at several cars  B．the boy tried to stop several cars

C．the boy’s brother was hurt seriously  D．the boy’s brother wanted to stop a car

From the last paragraph we can learn that         .

A．you shouldn’t drive so fast that someone throws at you

B．it is common to throw a brick at a car running too fast

C．you can’t go through your life without a brick throwing at you

D．you should pay more attention to others and help them

B

TaIL Spin

Two dolphins race around in a big pool in the Ocean Park. The smaller dolphin Grace, shown off a few of her tricks, turning around and waving hello to the crowd. The most amazing thing about her, however, is that she’s even swimming at all. She doesn’t have a tail.

Grace lost her tail as a baby when she got caught up in a fish trap.

When the dolphin arrived at the Ocean Park in December 2005, she was fighting for her life. “Is she going to make it?” Her trainer, Abbey Stone, feared the worst. Grace did make it --- but her tail didn’t. She ended up losing her flukes and the lower part of her peduncle.

Over the past six years, she has learned to swim without her tail. Dolphins swim by moving their flukes and peduncle up and down. Grace taught herself to move another way---like a fish! She pushed herself forward through the water by moving her peduncles from side to side.

The movement put harmful pressure on Grace’s backbone. So a company offered to create a man-made tail for her. The tail had to be strong enough to stay on Grace as she swam but soft enough that it wouldn’t hurt her.

The first time Grace wore the artificial tail. She soon shook it off and let it sink in the bottom of the pool. Now, she is still learning to use the tail. Some days she wears it for an hour at a time, others not at all. “The tail isn’t

necessary for her to feel comfortable,” says Stone, “but it helps to keep that range of motion(动作) and build muscles(肌肉).”

Now, the dolphin is about to get an even happier ending. This month, Grace will star in Dolphin Tale, a film that focus on her rescue and recovery. Her progress has inspired more than just a new movie. Many people travel from near and far to meet her. Seeing Grace swim with her man-made tail gives people so much courage.

60. When Grace first arrived at the Ocean Park, her trainer worried about her ______.

A. physical build                                        B. potential ability

C. chance of survival                                 D. adaptation to the surroundings.

61. A man-made tail is created for Grace to ______.

A. let her recover faster                              B. make her comfortable

C. adjust her way of swimming                   D. help her perform better tricks

62. The story of Grace inspires people to ______.

A. stick to their dreams                              B. treat animals friendly

C. treasure what they have                         D. face difficulties bravely

A poor boy Howard Kelly was trying to make some money for school by selling goods. He found that he had only one coin left. He was so  16  that he decided to beg for a meal at the next house. However, he lost his courage when a lovely young  17 opened the door. Instead of asking for a meal, he asked for a drink of  18 . She smiled understandingly and brought him a  19  glass of milk. He drank it slowly and then asked, “How much is it?”
“You need pay nothing.” she replied. “Mother has  20 me never to accept pay for a  21 .” As Howard  22  that house, he not only felt stronger 23  , but it also made him believe in God and the human beings more. He was about to give up before this.
24 later, the young woman became very ill. She was sent to the big city,  25  Dr Howard Kelly, now famous, was called in for the treatment. When he heard the name of the  26  she came from, a  27  light filled his eyes. Immediately, he rose and went down through the hospital hall into her room. He  28  her at once. From that day on, he gave   29  attention to her case and  30   to do his best to save her life.
After a long time, she recovered. The bill was sent to her room. She was  31  to open it because she knew it would 32  the rest of her life to pay it off. Finally she looked at the bill and saw these words on one side of it,
"Paid in full with  33 ."
                    Dr Howard Kelly
Tears of  34  ran out of her eyes as she cried, "Thank you,  35 . Your love has got around through human hearts and hands. "