For better eyesight.doctors advise limiting the hours of screen time and encourage having enough eye resting time．However.another study shows that sitting in front of computer or TV screens for long 题目和参考答案——青夏教育精英家教网—

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13．For better eyesight，doctors advise limiting the hours of screen time and encourage having enough eye resting time．
However，another study shows that sitting in front of computer or TV screens for long hours is not the only reason for myopia （近视）．An Australian research team studied young children in Sydney and Singapore to find the reasons for myopia．
The research team found that the prevalence （流行） of myopia among children in Sydney was lower than children in Singapore，even though they spent more time in front of computer and TV screens．The major finding is that children in Sydney spend longer hours on outdoor activities than those in Singapore．
Indoor and outdoor sports activities both make the eyes focus on more distant objects，which prevents the eyes from changing shape．But outdoor activities may better help avoid myopia than indoor sports activities．
Jane Gwiazda，who does research in sight problems，says："Natural light is good for eye growth．And extra vitamin D from the sun might contribute to eye growth．"
Many doctors suggest that every child gets its first eye test done when he/she is about two and half years old，and even if his/her sight seems perfect．
It is necessary for myopic children to wear glasses to prevent headaches，trouble reading or injuries．It is also important that schools invite doctors to test their students'eyes．
If that is not possible，school teachers should at least encourage parents and children to have regular eye examinations and wear glasses．And parents should remember not only to limit the total screen time for their children，but also to encourage them to spend time outdoors．
32．What's the aim of the study by the Australian research team？B
A．To find the ways to treat myopia．
B．To find the reasons for myopia．
C．To prove the bad effects of myopia．
D．To prove the prevalence of myopia．
33．Why are there fewer children with myopia in Sydney than in Singapore？C
A．Because Sydney children watch less TV．
B．Because Sydney children have more eye resting time．
C．Because Sydney children do more outdoor sports．
D．Because Sydney children use computers less．
34．What conclusion can we draw from the passage？D
A．Sydney children don't study hard．
B．Singapore children do few exercises．
C．Room light does harm to children's eyes．
D．Outdoor activities do more good to eyes．
35．Which of the following statements is TRUE？D
A．Children should have eye tests as soon as they reach school age．
B．Doing outdoor activities with no glasses is good for myopia children．
C．Children should limit their time in the sun in order to protect their eyes．
D．Focusing on distant objects can help the eyes keep their original shape．

分析近视的原因有很多，澳大利亚的一项研究有了新发现．文章就这一发现展开说明．

解答 BCDD
32 B 推理判断题．根据第二、三段another study shows that sitting in front of computer or TV screens for long hours is not the only reason for myopia （近视）．可知这一研究的目的是研究近视的原因．故选B．
33 C 细节理解题．根据第三段中的"The major finding is that children in Sydney spend longer hours on outdoor activities than those in Singapore．"可知悉尼儿童近视少的原因是他们从事户外运动的时间比较长，故选C．
34 D 推理判断题．根据第四段中的"But outdoor activities may better help avoid myopia than indoor sports activities．"可知，户外运动对眼睛有益．故选D．
35 D 细节理解题．根据第四段中的"Indoor and outdoor sports activities both make the eyes focus on more distant objects，which prevents the eyes from changing shape．"可知注意力集中在远方的物体对保护眼睛有好处，故选D．

点评学生需要认真阅读原文，把握文章大意，对文章脉络有整体的了解，能仔细查找文中细节，并能根据文章内容进行合理的推测判断．

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