5．The rise of mobile phones has been blamed for a number of social ills，but your smart phone may also be making you physically sick as well．Scientists have identified a condition called"cybersickness"，which they say is the digital version of motion sickness．The phenomenon，which affects up to 80percent of the population who own smart phones or tablets，leads to feelings of sickness and unsteadiness．It is caused by seeing fast motion on a screen，which covers anything from a car chase in a film to scrolling through web pages on your phone．
The more realistic the visual content appears to you，the higher your chances of getting cybersickness are．The condition was identified in a piece in the New York Times in which British and US experts said that it needed solving．Motion sickness leaves sufferers feeling ill because they feel movement in your muscles and your inner ear but do not see it．The mismatch in digital sickness is the opposite-you see movement on the screen but do not feel it．The effect is the same and the symptoms include a headache，wanting to throw up，confusion and the need to sit down．Often cybersickness shows itself in a subtle way and sufferers put it down to stress or eyestrain．
Steven Rauch，a professor of otolaryngology（耳鼻喉科学） at Harvard Medical School，said："Your sense of balance is different from other senses in that it has lots of inputs．When those inputs don't agree，that's when you feel dizziness and sickness．"
Some studies that have been carried out into cybersickness found that women are more susceptible than men，the New York Times reported．Those who have Type A'personalities-meaning they are confident and determined-are more likely to suffer from cybersickness as well．Among those who have reported experiencing the condition have been video gamers who spend hours playing fast paced games．Engineers at Oculus VR，the virtual headset manufacturer，have admitted that digital motion sickness is one of their biggest problems．
27．From the text，we know that cybersicknessC．
A．is completely equal to motion sickness
B．affects up to 80% of the population．
C．leads to people's feelings of sickness and unsteadiness
D．is caused by seeing fast moving objects around
28．What's the difference between motion sickness and digital sickness？A
A．Digital sickness means sufferers see movement but do not feel it．
B．Digital sickness means sufferers feel movement but do not see it．
C．Motion sickness means sufferers see movement but do not feel it．
D．Motion sickness means sufferers don't see or fel movement
29．What does the underlined word"susceptible"in the last paragraph mean？B
A．likely to accept B．likely to be affected
C．likely to suspect D．likely to be cured
30．This passage is most probablyD．
A．a science fiction B．a newspaper ad
C．a book review D．a science news report．
分析 随着手机越来越普及，许多社会疾病也愈发常见．但是，智能手机或许也会引起身体不适．科学家们认为，‘晕屏幕病'是电子版的晕动病．
解答 CABD
27．C 细节理解题．根据第一段倒数第二句"The phenomenon …leads to feelings of sickness and unsteadiness"可知C正确；从第二段"The mismatch in digital sickness is the opposite…"可知A不准确；从"which affects up to 80 percent of the population who own smartphones or tablets"可知B不准确；从"It is caused by seeing fast motion on a screen"可知D不准确．
28．A 细节理解题．根据第二段"Motion sickness leaves sufferers feeling ill because they feel movement in your muscles and your inner ear but do not see it．The mismatch in digital sickness is the opposite-you see movement on the screen but do not feel it"可得出答案．
29．B 词义猜测题．根据最后一段"..are more likely to suffer from cybersickness as well"可猜测出"susceptible"的意思接近于"be likely to suffer from"也就是"很容易感染"的意思，故选择B．
30．D 推理判断题．文章介绍一种由智能手机等电子设备使用所造成的一种病--"晕屏症"，是一篇科技方面的报道，因此A．科幻小说；B．报纸广告；C．书评均不符合文意．
点评 本文是科教类阅读理解．做这类题材阅读理解时要求考生对文章通读一遍，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
