Eye doctors in Shanghai found out that the nearsightedness among primary and middle school students has something to do with the colour of the paper in their textbooks and notebooks．

　 The doctors suggested that yellow paper will be used to replace the white one．According to

their research，the experts found out white paper reflects too much light and easily tires a person’s eyes．The yellow paper，however，doesn’t look so sharp to a person’s eyes．In other words，it is much milder to the eyes of students who may do reading or writing for hours．

The experts’research findings were based on first．hand information and a number of scientific experiments including a new study among the students from forty-one middle schools．To make the students understand the truth，Shanghai Education Development Co．Ltd．has produced textbooks and exercise．books made of yellow paper．The books will be used in the whole city soon．

(　 )49．What does the word“replace”here mean in Chinese?

　　　 A．放置　　　　 　B．重置　　　　 C．替代　　　　 D．發(fā)生

(　 )50．The doctors found out_________ caused the students’nearsightedness．

　　　 A．their studies have　　　　　　　　 B．the colour of the paper has

　　　 C．the textbooks and notebooks have　　 D．the colour of their clothes has

(　 )51．Why does white paper easily make our eyes tired?

　　　 A．Because white paper reflects too much light．

　　　 B．Because white paper gets in too much light．

　　　 C．Because white paper is always shining．

D．Because white paper is too bright．

　

　 Eye doctors in Shanghai found out that the nearsightedness among primary and middle school students has something to do with the colour of the paper in their textbooks and notebooks．

　 The doctors suggested that yellow paper will be used to replace the white one．According to

their research，the experts found out white paper reflects too much light and easily tires a person’s eyes．The yellow paper，however，doesn’t look so sharp to a person’s eyes．In other words，it is much milder to the eyes of students who may do reading or writing for hours．

The experts’research findings were based on first．hand information and a number of scientific experiments including a new study among the students from forty-one middle schools．To make the students understand the truth，Shanghai Education Development Co．Ltd．has produced textbooks and exercise．books made of yellow paper．The books will be used in the whole city soon．

(　 )49．What does the word“replace”here mean in Chinese?

　　　 A．放置　　　　 　B．重置　　　　 C．替代　　　　 D．發(fā)生

(　 )50．The doctors found out_________ caused the students’nearsightedness．

　　　 A．their studies have　　　　　　　　 B．the colour of the paper has

　　　 C．the textbooks and notebooks have　　 D．the colour of their clothes has

(　 )51．Why does white paper easily make our eyes tired?

　　　 A．Because white paper reflects too much light．

　　　 B．Because white paper gets in too much light．

　　　 C．Because white paper is always shining．

D．Because white paper is too bright．

　

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It all started at the beginning of the ninth grade. Carmen found she couldn't see things ___26___ all the time. She became very worried, but she hoped 　 27　 would know that. When her mother asked her to see the eye doctor, she didn't　 28　 . But her mother's mind was made up.

Three days later. Carmen got new glasses and instructions 　29 . her doctor. "All of the kids will think I'm silly. " Carmen said. Her mother 　30　 and shook her head. "You look just as beautiful as before, she said. But Carmen didn't believe her.

The next day. Carmen kept the 　 31　 in her pocket(口袋))as she walked into the schoolyard. She stood alone away from her friends, feeling　 32

Suddenly, she heard her friend Theresa shout.

Carmen ran over to the other girls. "What's the 　 33 ?" she asked.

"My ring is gone!" Theresa cried. "My sister sent it to me from California. It's very _34__ and I can 't lose it. "

Carmen and her friends began to 　 35　 the ring in the grassy area of the playground. Carmen realized that she could do better _36_ she could see better. She took the glasses out and put them on. Everything looked so _37_ ! So clear! She looked down at the ground and a bright light caught her 38　 . It was the ring.

"Here it is," she shouted. She handed it to Theresa.

"Thanks, Carmen," she said. "I _39_ thought we'd find it." She paused(停頓). “Hey, 1 didn’t know you wore glasses. They look great!"

Carmen had 　40　 that she was wearing the new glasses. “Thanks,” she replied.

"Maybe wearing glasses won't be so bad after all." Carmen thought.

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