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（黃斑變性），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 這是一篇說(shuō)明文介紹了導(dǎo)致視力下降的兩種常見(jiàn)原因以及保護(hù)視力的最佳方式：多參與戶外活動(dòng)，多曬太陽(yáng)．
解答 7．C 詞義猜測(cè)題．由該詞所在句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，近視意味著只能看清眼前的東西，遠(yuǎn)處的東西將會(huì)是模糊不清楚的．結(jié)合選項(xiàng)，故選C
8．B 細(xì)節(jié)理解題．根據(jù)文章內(nèi)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．陽(yáng)光有益于視力，本文呼吁人們不要宅在家里，多參加戶外活動(dòng)以保護(hù)視力．結(jié)合選項(xiàng)，故選B
9．B 細(xì)節(jié)題．根據(jù)文章內(nèi)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．學(xué)生的學(xué)習(xí)壓力過(guò)重導(dǎo)致他們的戶外運(yùn)動(dòng)少，從而引起近視，結(jié)合選項(xiàng)，故選B
10．D 寫(xiě)作意圖題．根據(jù)文章內(nèi)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．作者建議讀者多保護(hù)自己的眼睛，多去戶外走走，尤其是學(xué)業(yè)壓力重的孩子．結(jié)合選項(xiàng)，故選D
點(diǎn)評(píng) 本文是一個(gè)科教類閱讀，題目涉及多道細(xì)節(jié)理解題，做題時(shí)結(jié)合原文和題目有針對(duì)性的找出相關(guān)語(yǔ)句進(jìn)行仔細(xì)分析，結(jié)合選項(xiàng)選出正確答案．推理判斷題也是要在抓住關(guān)鍵句子的基礎(chǔ)上合理的分析才能得出正確答案，切忌胡亂猜測(cè)，一定要做到有理有據(jù)．
