题目内容
15．If you need glasses to read this，you are among the majority of Chinese students．That's because most students in China are short-sighted which means they can only see things close up and distant things will be blurry．Four-fifths of high school students wear glasses and now more and more children in primary school need glasses，too．This epidemic of poor eyesight has two very simple causes：too much time spent indoors studying and too little time spent outdoors playing．Reading and writing for hours and hours，sometimes in poorly lighted rooms，causes eyesight to weaken．But students have to do this because there is so much pressure on them to succeed in school．And because they spend so much time indoors at school and at home，they have less time to spend outdoors enjoying the sun．
The sun，as a consequence，is important in developing good eyesight．Exposure to daylight releases a chemical in the eyes that prevents，or at least delays，short-sightedness．According to a study by Ian Morgan of Australian National University，Australian children and Chinese children have the same level of eyesight before they start school，but once they enter primary school，Chinese children only spend about an hour a day outside，while Australian children spend three to four hours each day in the sunshine．The result is that while about 40percent of Chinese primary school students need glasses，only three percent of Australian children do．
Wearing glasses may not seem like a big deal．For some，wearing glasses can even be an opportunity to make a fashion statement．But poor eyesight at a young age can have serious long term consequences．As you get older，your eyesight can worsen and lead to things like macular degeneration（黄斑变性），a condition of the eyes for which there is no cure and which can eventually lead to blindness．
With all that in mind，don't you think it's time to give your eyes a break？Try spending a little less time inside and go for a walk in the park，instead．It's the healthy thing to do and your eyes will thank you for it．
7．What does the underlined word"blurry"mean？C
A．Unpopular
B．Unpleasant
C．Unclear
D．Unconscious
8．How should the students protect their eyesight according to the passage？B
A．They should study less and less．
B．They should stay longer outdoors．
C．They should wear sunglasses．
D．They should have a longer rest in bed．
9．It can be inferred from the passage thatB is to blame for the poor eyesight of Chinese children．
A．the ever-worsening bad weather
B．the ever-increasing burden of study
C．the ever-decreasing sunny days
D．the ever-decreasing period of study time
10．What is the purpose of this article？D
A．To explain why Chinese students are poor-sighted．
B．To admire Australian children's good eyesight．
C．To criticize the present education system．
D．To call on people to protect Chinese children's eyesight．
分析 这是一篇说明文介绍了导致视力下降的两种常见原因以及保护视力的最佳方式：多参与户外活动，多晒太阳．
解答 7．C 词义猜测题．由该词所在句That's because most students in China are short-sighted which means they can only see things close up and distant things will be blurry．可知，近视意味着只能看清眼前的东西，远处的东西将会是模糊不清楚的．结合选项，故选C
8．B 细节理解题．根据文章内容The sun，as a consequence，is important in developing good eyesight以及Try spending a little less time inside and go for a walk in the park，instead．It's the healthy thing to do and your eyes will thank you for it．阳光有益于视力，本文呼吁人们不要宅在家里，多参加户外活动以保护视力．结合选项，故选B
9．B 细节题．根据文章内容，But students have to do this because there is so much pressure on them to succeed in school．And because they spend so much time indoors at school and at home，they have less time to spend outdoors enjoying the sun．学生的学习压力过重导致他们的户外运动少，从而引起近视，结合选项，故选B
10．D 写作意图题．根据文章内容Try spending a little less time inside and go for a walk in the park，instead．It's the healthy thing to do and your eyes will thank you for it．作者建议读者多保护自己的眼睛，多去户外走走，尤其是学业压力重的孩子．结合选项，故选D
点评 本文是一个科教类阅读，题目涉及多道细节理解题，做题时结合原文和题目有针对性的找出相关语句进行仔细分析，结合选项选出正确答案．推理判断题也是要在抓住关键句子的基础上合理的分析才能得出正确答案，切忌胡乱猜测，一定要做到有理有据．
