Three-Dimensional （3D） movies have been becoming more and more popular in recent years．It seems 3D TV sets may be going into family households in the near future．While new digital 3D technology has made the experience more comfortable for many, for some with eye problems, long 3D viewing may result in an aching head, doctors say．

       "There are a lot of people walking around with very minor eye problems, which under normal situations, the brain deals with naturally," said Dr Michael Rosenberg, an ophthalmologist （眼科医师） in Chicago．He said in a 3D movie, these people face a completely new sensory experience．"That translates into greater mental effort, making it easier to get a headache," Rosenberg told Reuters．

       In normal vision, each eye sees things at a slightly different angle．"When that gets processed in the brain, that creates the perception （感觉） of depth," said Dr Deborah Friedman, an ophthalmologist in New York．The images people see in three dimensions in the movies are not calibrated （校准的） in the same way that their eyes and brain are．"If your eyes are a little off to begin with, then it's really throwing a whole degree of effort that your brain now needs

to exert （竭尽全力）," he said．                    

       Dr John Hagan, a Kansas City ophthalmologist, said some people who do not have normal depth perception cannot see in 3D at all．He said people with eye muscle problems, in which the eyes are not pointed at the same object, have trouble processing 3D images．

       Rock Heineman, a spokesman for RealD, a provider of 3D equipment to theaters, said headaches and nausea were the main reasons 3D technology never took off．

       Heineman said older 3D technology used two film projectors（放映机）, one that projected a left-eye image and one that projected a right-eye image．Three-D glasses would allow viewers to see a different image in each eye．

       "People often complained of headaches and it was really because the projectors weren’t lined up," Heineman said．

       Now his company has developed a new single digital projector, which switches between the left and the right-eye image 144 times a second, to help overcome some of the old problems．

       "By going to a single digital projector, those problems were solved," he said．Friedman said he thinks most people will do fine with 3D movies and with 3D TVs, but Rosenberg said people may quickly tire of the novelty （新鲜事物）．"I suspect there will be a lot of people who say it's sort of neat, but it's not really comfortable," he said．

The text is mainly about ____．

       A．the reasons why people like 3D movies

       B．how to improve 3D technology

       C．the development of 3D technology in recent years

       D．causes of headaches and nausea when people watch 3D movies

The underlined phrase "took off" could be replaced by "______"．

       A．became popular             

       B．flew in the sky

       C．left hurriedly              

       D．removed one's clothes

This article implies that _____．

       A．people do not like new things like 3D movies

       B．3D TVs will completely take the place of old TV sets

       C．3D technology is the most important technology ever

       D．those with eye muscle problems should not watch 3D movies

We can learn from what Rosenberg said in the last paragraph that

       A．a single digital projector could solve all the problems with 3D technology

       B．people will gradually become comfortable with 3D movies and TVs

       C．the appeal of 3D movies and "TVs may fade

       D．most people will actually enjoy the 3D experience

Today, almost everyone has heard of Harry Potter. The books detailing his experiences at Hogwarts School of Witchcraft and Wizardry have aroused passion, creativity, and interest in reading throughout the world.

But have you ever considered why you are a fan of the Harry Potter series?

JK Rowling has created a list of characters and an environment for them to inhabit that appeals to both adults and children. 

The fantasy aspect of the wizarding world expands the imagination, and takes the mind to new and exciting places. Anything could happen there. Her stories contain parts of the believable and unbelievable, changing the predictability that readers commonly come across and bear in fiction. 

The main theme of the series, including good versus evil, prejudice, love, death, sacrifice, friendship and loyalty, in actuality contributes to the ever-lasting nature of the stories. At the same time, these themes remind us of classic literature, offering mature readers tales that wear like a comfortable pair of shoes, while introducing younger readers to concepts they will meet throughout their lives. 

Much of the appeal also comes from the characters. In each book, JK Rowling introduces and describes the characters in such a way that we wonder not only about their futures, but also about their pasts. Even supporting characters are suddenly more than just extras in the background. And what of Harry Potter himself? We care about Harry, because we watch him grow from an innocent boy to a powerful wizard. We see him as both Hero and Victim. He experiences endless love and extreme pain, and as readers, we experience them with him.

This perfect combination of emotion, suspense and fantasy, together with the fact that JK Rowling is a superb storyteller is the reason why we are Harry potter fans. People are fond of Harry Potter series. With books like these, it’s hard not to be.

1. Harry Potter series become popular partly because ____________.

A. they remind us of the childhood and environment we had in the past

B. they take us to a world beyond our imagination and expectation

C. they offer us ever-lasting nature of the stories

D. they set an example of hero for us to follow

2.What does the underlined sentence in Paragraph 6 mean?

A. The supporting characters are not necessary in the story.

B. Readers care only about Harry but not those supporting characters.

C. Even the supporting characters are attractive in the story.

D. Those supporting characters only appear all of a sudden.

3.The themes of the Harry Potter series do not contain ____________.

A. prejudice and love                                    B. good and evil

C. death and sacrifice                                  D. safety and peace

4.People care for Harry Potter because ____________.

A. they think of classic literature when reading the story

B. they find different experiences from theirs on Harry

C. they share the experiences with Harry

D. they like JK Rowling’s description very much

We have to give the users something new ________ what we’ve already offered, which is the only way to broaden the appeal of the website.

A．regardless of                           B．in addition to

C．in exchange for                         D．according to

Today, almost everyone has heard of Harry Potter. The books detailing his experiences at Hogwarts School of Witchcraft and Wizardry have aroused passion, creativity, and interest in reading throughout the world.
But have you ever considered why you are a fan of the Harry Potter series?
JK Rowling has created a list of characters and an environment for them to inhabit that appeals to both adults and children.
The fantasy aspect of the wizarding world expands the imagination, and takes the mind to new and exciting places. Anything could happen there. Her stories contain parts of the believable and unbelievable, changing the predictability that readers commonly come across and bear in fiction.
The main theme of the series, including good versus evil, prejudice, love, death, sacrifice, friendship and loyalty, in actuality contributes to the ever-lasting nature of the stories. At the same time, these themes remind us of classic literature, offering mature readers tales that wear like a comfortable pair of shoes, while introducing younger readers to concepts they will meet throughout their lives.
Much of the appeal also comes from the characters. In each book, JK Rowling introduces and describes the characters in such a way that we wonder not only about their futures, but also about their pasts. Even supporting characters are suddenly more than just extras in the background. And what of Harry Potter himself? We care about Harry, because we watch him grow from an innocent boy to a powerful wizard. We see him as both Hero and Victim. He experiences endless love and extreme pain, and as readers, we experience them with him.
This perfect combination of emotion, suspense and fantasy, together with the fact that JK Rowling is a superb storyteller is the reason why we are Harry potter fans. People are fond of Harry Potter series. With books like these, it’s hard not to be.
【小题1】Harry Potter series become popular partly because____________.

Today, almost everyone has heard of Harry Potter. The books detailing his experiences at Hogwarts School of Witchcraft and Wizardry have aroused passion, creativity, and interest in reading throughout the world.

But have you ever considered why you are a fan of the Harry Potter series?

JK Rowling has created a list of characters and an environment for them to inhabit that appeals to both adults and children. 

The fantasy aspect of the wizarding world expands the imagination, and takes the mind to new and exciting places. Anything could happen there. Her stories contain parts of the believable and unbelievable, changing the predictability that readers commonly come across and bear in fiction. 

The main theme of the series, including good versus evil, prejudice, love, death, sacrifice, friendship and loyalty, in actuality contributes to the ever-lasting nature of the stories. At the same time, these themes remind us of classic literature, offering mature readers tales that wear like a comfortable pair of shoes, while introducing younger readers to concepts they will meet throughout their lives. 

Much of the appeal also comes from the characters. In each book, JK Rowling introduces and describes the characters in such a way that we wonder not only about their futures, but also about their pasts. Even supporting characters are suddenly more than just extras in the background. And what of Harry Potter himself? We care about Harry, because we watch him grow from an innocent boy to a powerful wizard. We see him as both Hero and Victim. He experiences endless love and extreme pain, and as readers, we experience them with him.

This perfect combination of emotion, suspense and fantasy, together with the fact that JK Rowling is a superb storyteller is the reason why we are Harry potter fans. People are fond of Harry Potter series. With books like these, it’s hard not to be.

1. Harry Potter series become popular partly because ____________.

A. they remind us of the childhood and environment we had in the past

B. they take us to a world beyond our imagination and expectation

C. they offer us ever-lasting nature of the stories

D. they set an example of hero for us to follow

2. What does the underlined sentence in Paragraph 6 mean?

A. The supporting characters are not necessary in the story.

B. Readers care only about Harry but not those supporting characters.

C. Even the supporting characters are attractive in the story.

D. Those supporting characters only appear all of a sudden.

3. The themes of the Harry Potter series do not contain ____________.

A. prejudice and love                B. good and evil

C. death and sacrifice               D. safety and peace

4. People care for Harry Potter because ____________.

A. they think of classic literature when reading the story

B. they find different experiences from theirs on Harry

C. they share the experiences with Harry

D. they like JK Rowling’s description very much