New technology rules the whole world now. But I still remember when I was a child, I did not have a cell phone or a computer because it was not necessary at all in those days. The Internet was not popular and the touch screen technology was unknown.

At this time here in the US smartphones are really a need, especially for young and business people. There are many applications (应用软件) really useful like maps, dictionaries, e-mails and games.

For me, I use my smartphone to check the weather and to look for something on the Internet and of course to keep communicating through calls and texts. Besides, I like music applications, GPS and Facebook.

Many tests have discovered that cell phones cause damage to us because they send out radioactive (具有放射性的) waves to our bodies and this could cause cancer.

Psychologists say that these devices can affect behavior and I believe everyone knows it is harmful to the eyes if we are sitting for a long time in front of the computer. However, it seems to be difficult for us to give up, even if we know how bad it is for our health. The use of technology becomes more and more important in our lives.

I think the use of technology has brought us unimaginable things. If we use technology correctly, I am sure it would be possible to decrease the damage to our bodies.

Keep in mind that it is important not to focus only on technology, but to spend time with our families and people close to us.

【小题1】What can we know from the passage?

A．The author is a businessman working for a cell phone company.

B．The author has suffered a lot from the use of electrical devices.

C．The author knows little about the functions of modern cell phones.

D．The author is quite pleased with the various functions of cell phones.

【小题2】Which of the following does the author agree with?

A．It’s not necessary to add more applications to cell phones.

B．Cell phones have made our world a boring place to live in.

C．New technology has done people more harm than good.

D．New technology makes people separated from each other.

【小题3】What does the underlined word “decrease” in Paragraph 6 mean?

A．Keep.	B．Cause.
C．Reduce.	D．Add.

【小题4】What does the author mainly discuss in the passage?

A．The importance of the Internet.	B．The applications of cell phones.
C．The role of new technology in our lives.	D．The health problems brought by cell phones.

   You'll probably never go to Mars or sing on the stage with The Rolling Stones. But if virtual reality （VR）ever lives up to its promise, you might be able to do all these things - and many more - without even leaving your home.Unlike real reality, virtual reality means simulating（模拟）bits of our world. Apart from games and entertainment, it's long been used for training airline pilots and surgeons and for helping scientists to figure out difficult problems such as the structure of protein molecules（蛋白质分子）. Then how does it work?

Close your eyes and think of virtual reality and you probably picture something like this:a man wearing a wrap-around headset and data gloves wired into a powerful workstation or supercomputer. What distinguishes VR from an ordinary computer experiences the nature of the input and output. While an ordinary computer uses things like a keyboard, a mouse, or speech recognition for input, VR uses sensors that detect how your body is moving. A PC displays output on a screen while VR uses two screens （one for each eye） , surround-sound speakers, and maybe some forms of touch and body feedback as well.

VR has been routinely used by scientists,doctors, engineers, architects, archaeologists, and the military for about the last 30 years. Difficult and dangerous jobs are hard to train for. How  can you safely practice taking a trip to space, making a parachute jump, or carrying out brain surgery? All these things are obvious candidates for virtual reality applications.

Like any technology, virtual reality has both good and bad points. Critics always raise the risk that people may be addicted to alternative realities to the point of ignoring their real-world lives, but this criticism has been leveled at everything from radio and TV to computer games and the Internet. Like many technologies, VR takes little or nothing away from the real world: you don't have to use it if you don't want to.

【小题1】According to the passage, virtual reality means ____________ .

A．imagining beautiful things in our mind

B．creating something that doesn't exist

C．creating an environment that seems real

D．cloning something that has died out

【小题2】What equipment do we probably need for virtual reality?

A．A keyboard, a headset and a supercomputer.

B．A headset, data gloves and speech recognition.

C．A headset, data gloves and a supercomputer.

D．A keyboard, a mouse and speech recognition.

【小题3】Paragraph 3 is mainly about ____________ .

A．the principles of virtual reality

B．the applications of virtual reality

C．the history of virtual reality

D．the study team of virtual reality

【小题4】What is the writer's attitude towards VR?

A．Appreciative.	B．Cautious.
C．Skeptical.	D．Indifferent.

   According to a study published last week in the journal Science，scientists have found a way to change a plant's genes（基因）in order to make it use sunlight more quickly. Someday，the results could increase the amount of food produced around the world.

By changing a plant's genes，the scientists were able to increase leaf growth on plants by 14-20 percent. Specifically，scientists changed the plant's protective（保护的）system. “Normally，this system is activated when a plant gets too much sunlight，”said scientist Krishna Niyogi，co-author of the study. “When the plant senses the light，it gets rid of extra energy and creates more leaves. When the plant is in the shade，the protective system is turned off. But the process is slow.”

Stephen Long is the lead author of the study. He compared a plant's protective system to light-adjusting glasses.“When a person wears the glasses outside during the day，the lenses（镜片）darken and lighten depending on how sunny it is. Plants do the same thing，”he said.“But in plants the adjustment can take anywhere from 10 minutes to an hour. This makes it hard for plants to get the right amount of sunlight needed to create food.”

The new study sped up the process. By changing the plant's genes，it's more quickly than normal to turn on and turn off the protective system. As a result，leaf growth on the plants scientists used in the study increased. Leaf growth on two plants increased by 20 percent, while leaf growth on a third plant increased by 14percent. Scientists conducted the study on tobacco plants. But they thought the genetic modification would produce the same results in corn or rice.

【小题1】What does the plant's protective system need to keep activated?

A．Mild shade.	B．Leaf growth.
C．Genetic changes.	D．Enough sunlight.

【小题2】What does the underlined word“modification”in Paragraph 4mean?

A．Development.	B．Decoration.
C．Change.	D．Copying.

【小题3】What can we infer from this text?

A．Changing how a plant uses sunlight could mean more food in the future.

B．When the plant is in the shade, its protective system is turned off slowly.

C．Too much sunlight will damage plants' protective system.

D．It is hard for plants to create food without enough sunlight.

   We all know the hard work that filmmakers and actors put in the film to provide us with entertainment, but it seems that even regular moviegoers like us have a big impact on how a movie turns out too.
For decades, film studios have used so-called test screenings to get feedback from members of the public before a movie comes out.
While test audience members are usually asked to fill in a questionnaire after a screening, telling the film studio what they liked and didn't like, media giant Disney has come up with a more high-tech solution.
According to a paper published this summer by the company's researchers, Disney is measuring the test audience's reactions by using special cameras placed inside cinemas.
Pairing the cameras with custom(定制的) software, the company can track what each audience member is feeling at any point in the movie, from anger to joy.
This works by mapping 68 different points on each audience member's face. The cameras can see in the dark, and the software can figure out a person's mood based on the slightest facial expressions.
It's hoped that this new method will allow more detailed feedback from the test audience. Rather than relying on audience members to recall their feelings after the movie's over,it can accurately read their reactions in real-time.
Test screenings are highly valued in the movie industry, and several well-known movies have been greatly altered(改变)following feedback.
Viewers of E.T. the Extra-Terrestrial would have left the cinema feeling a whole lot of difference if it had not been for its test audience's feedback.
"In one cut of the film that was tested,E.T. died instead of going home in his spaceship. You won't be surprised to hear that the test audience in question. didn't warm to this ending at all," wrote media website Den of Geek.
But for those who are concerned about privacy, the cameras won't be installed in public cinemas.
After all, unless you're part of the test audience,being in front of the camera is best left to the movie stars.
【小题1】How do the test audience influence a movie before it comes out?

A．They get involved in the shooting of a movie.

B．They help promote it after test screenings.

C．They give advice on how a movie should end.

D．Their views on the movie may help change it.

【小题2】What is the main advantage the cameras Disney researchers are using have over questionnaires?

A．They protect the audience's privacy better.

B．They allow the audience to recall their feelings more easily.

C．They are able to record the audience's moods accurately on the spot.

D．They can help audience members adjust their moods with custom software.

【小题3】With the example of

A．T. the Extra-Terrestrial, the author intends to ______.

B．illustrate the significance of test screenings

C．emphasize the importance of altering a movie

D．show what kind of endings are better received by viewers

E．explain what kind of feedback could be accepted in test screenings

【小题4】The underlined word "cut"in the third-to-last paragraph probably means ______.

A．a particular version of a movie

B．a part that is removed from a movie

C．a part of something that is shared among people

D．a reduction in the number or amount of something

The Square
Jack Dorsey, the co-inventor of Twitter, is promoting his latest invention called the Square. The square is a small plug-in attachment to your mobile phone that allows you to receive credit card payments.
The idea starting from Dorsey's friend Jim McKelvey who was unable to sell some glass work to a customer because he couldn't accept a particular card being used.
Accepting credit card payments for something you're selling isn't always easy, especially if you are mobile like a tradesman, or delivery service at a trade show.
This latest invention uses a small scanner that plugs into the audio input item on a mobile device. It reads information on a credit card when it is swiped(刷卡). The information is not stored on the device but sent over secure channels to banks. It basically makes any mobile phone a cash register for accepting card payments.
As a payer, you receive a receipt via email that can be instantly accessed securely online. You can also use a text message to authorize payment in real time. Retailers can create a payer account for their customers which speeds the payment process. For example, a cardholder can assign a photo to their card so their photo will appear on the phone for visual identity confirmation. Mobile devices with touch screens will also allow you to sign for goods.
There are no contracts, monthly fees, or hidden costs to accept card payments using Square and it is expected the plug-in attachment will also be free of charge.
As with Twitter, it's expected that Dorsey will direct the company based upon feedback from users. Square Inc. has offices in San Francisco, Saint Louis and New York and is currently beta testing the invention with retailers in the United States.
【小题1】Why is Jack Dorsey promoting his latest invention?

A．To test a plug-in attachment.

B．To identify a particular credit card.

C．To sell some glass work to a customer.

D．To allow people to receive credit card payments.

【小题2】What can we infer from Paragraph 4?

A．The service performs only on special mobile phones.

B．The latest invention is just a small scanner.

C．The Square contains information on a credit card.

D．It is safe for your information to be sent to banks.

【小题3】How can a cardholder receive a receipt?

A．By email online.

B．By oral message.

C．By a payer account.

D．Over safe channels to banks.

【小题4】What does the writer imply in the last paragraph?

A．The invention may be used in the future.

B．The Square has already put into use widely.

C．The invention hasn’t been tested these days.

D．The Square is popular among people in the US.