题目内容：

    Dyslexia (失读症) is a reading and writing disability characterized by difficulties in reading and spelling, and for some readers to understand what they have read. Experts say dyslexia affects about five to ten percent of the population of the United States. Researchers have long known that people with dyslexia write or read words and letters backwards in the wrong order.

But a new study shows that people with dyslexia may have trouble redirecting (重新传入) their attention between senses, from seeing something to hearing something. Vanessa Harrar of Britain's University of Oxford led the study. She reported the findings in the journal Current Biology. The study suggests that dyslexic people may have trouble moving quickly from what they read to what they hear. Doctor Harrar calls this a sluggish shifting of attention across the senses.

''So, if you are trying to read something and then trying to listen to somebody who's reading aloud and you're trying to follow along with what they are reading, they have to switch their attention from hearing what they are saying to looking at the piece of paper and back again. '' said Harrar.

She found that people with dyslexia were just as fast as the others when they saw only a picture or heard only a sound. But the dyslexics had a slower reaction time when they heard a sound and saw a picture at the same time.

Doctor Harrar feels like playing action video games could help dyslexic people shift from seeing to hearing more quickly. She adds that images in video games force the eyes to move and focus quickly.

''Video game types of things pop out of here and there, they move your eyes around the screen quickly in response to things quite quickly, and the more you play a video game the faster you get that kind of thing. So the video game is really training the attention system to move quickly, '' said Harrar.

The study also shows that dyslexic people have the most difficulty going between what they saw and what they heard, this may have an effect on how dyslexic children are taught how to read. When children learn the alphabet, they usually see the letter first and then hear the sound, or they see and hear the letter at the same time. The study shows that dyslexics might learn more quickly if they hear the sound of a letter or word first before seeing it.

1.Dyslexic people have the following problems except _________.

A.writing or reading words and letters in the right order

B.redirecting their attention between senses, from seeing something to hearing something

C.moving quickly from what they read to what they hear

D.seeing a picture or hearing a sound

2.What does the underlined word ''sluggish'' in paragraph 2 mean？

A.Slow. B.Wrong.

C.Specific. D.Accurate.

3.Why can playing video games help dyslexic people learn more quickly?

A.Because they will train their reading and hearing.

B.Because they will have a good knowledge of the system.

C.Because they can train the attention system to move quickly.

D.Because they can arouse their interest in reading and learning.

4.What is the importance of the finding?

A.People with dyslexia will be cured by playing video games.

B.People with dyslexia will not be made fun of by others.

C.People will play more video games for dyslexic children.

D.People will know how to teach dyslexic children to read.