Question

7．Can you believe your eyes？A recent experiment suggests that the answer to that question may depend on your age．
    Martin Doherty，a psychologist at the University of Stirling in Scotland，led the team of scientists．In this experiment，Doherty and his team tested the perception（观察力） of some people，using pictures of some orange circles．The researchers showed the same pictures to two groups of people．The first group included 151 children aged 4 to 10，and the second group included 24 adults aged 18 to 25．
The first group of pictures showed two circles alone on a white background．One of the circles was larger than the other，and these people were asked to identify the larger one．Four-year-olds identified the correct circle 79 percent of the time．Adults identified the correct circle 95 percent of the time．
Next，both groups were shown a picture where the orange circles，again of different sizes，were surrounded by gray circles．Here's where the trick lies in．In some of the pictures，the smaller orange circle was surrounded by even smaller gray circles-making the orange circle appear larger than the other orange circle，which was the real larger one．And the larger orange circle was surrounded by even bigger gray circles-so it appeared to be smaller than the real smaller orange circle．
When young children aged 4 to 6 looked at these tricky pictures，they weren't fooled-they were still able to find the bigger circle with roughly the same accuracy（准确性） as before．Older children and adults，on the other hand，did not do as well．Older children often identified the smaller circle as the larger one，and adults got it wrong most of the time．
As children get older，Doherty said，their brains may develop the ability to identify visual（视觉的） context．In other words，they will begin to process the whole picture at once：the tricky gray circles，as well as the orange circle in the middle．As a result，they're more likely to fall for this kind of visual trick．
25．Doherty and his team of scientists did an experiment to evaluateC．
A．children's and adults'eye-sight             
B．children's and adults'brains
C．pe ople's ability to see accurately            
D．the influence of people's age
26．When asked to find the larger circle，A．
A．children at 4 got it right about 79% of the time with gray ones around
B．only adults over 18 got it right 95% of the time with gray ones around
C．children at 6 got it wrong 79% of the time with no gray ones around
D．adults got it right most of the time with gray ones around
27．According to the passage，we can know thatC．
A．a smaller orange circle appears bigger on a white background
B．an orange circle appears bigger than a gray one of the same size
C．a circle surrounded by bigger ones looks smaller than its real size
D．a circle surrounded by other circles looks bigger than its real size
28．Why are younger children not fooled？D．
A．Because they are smarter than older children and adults．
B．Because older people are influenced by their experience．
C．Because people's eyes become weaker as they grow older．
D．Because their brain can hardly notice related things together．

Answer 1

分析 这是一篇说明文阅读，简要说明研究人员如何用橙色圆圈测试两组人观察力的过程．

解答 25．C  推理判断题，根据第一段Can you believe your eyes？A recent experiment suggests that the answer to that question may depend on your age．可知科学家用一个实验来证明人们眼睛看的准确的能力，故选C．
26．A  细节理解题，根据第三段Four-year-olds identified the correct circle 79 percent of the time．Adults identified the correct circle 95 percent of the time．可知四岁的孩子确定正确的圆圈是时间的百分之79，故选A．
27．C  细节理解题，根据第四段And the larger orange circle was surrounded by even bigger gray circles-so it appeared to be smaller than the real smaller orange circle．可知被大圆圈包围的圆看起来比实际的小，故选C．
28．D  细节理解题，根据最后一段As children get older，Doherty said，their brains may develop the ability to identify visual（视觉的） context．In other words，they will begin to process the whole picture at once可知孩子们可以不受干扰是因为他们的大脑几乎看不见不相关的东西，故选D．

点评 考查学生的细节理解和推理判断能力．做细节理解题时一定要找到文章中的原句，和题干进行比较，再做出正确选择．在做推理判断题时不要以个人的主观想象代替文章的事实，要根据文章事实进行合乎逻辑的推理判断．