There are different kinds of color blindness. In some cases a man may not be able to see deep red. He may think that red, orange and yellow are all shades of green. Sometimes a person can’t tell the difference between blue and green. In rare cases an unlucky man may see everything in shades of green—a strange world indeed.
Color blindness in human beings is a strange thing to explain. In a single eye there are millions of very small things called “cones (圆锥体)”. These help us to see in the bright light and to tell differences between colors. There are also millions of “rods (柱状体)”, but these are used for seeing when it is nearly dark. They show us shapes but not colors.
Some insects have favorite colors. Mosquitoes (蚊子) like blue but do not like yellow. A red light will not attract insects, but a blue light will. Human beings also have favorite colors. Yet we are lucky. With the help of the cones in our eyes, we can see many beautiful colors by day, and with the help of the rods we can see shapes at night.
64. This passage is mainly about ___________.
A. colour and its surprising
B. women being luckier than men
C. danger caused by colour blindness
D. colour blindness
65. According to the passage, with the help of the “cones”, we can ___________.
A. tell different shapes
【江苏省姜堰市张甸中学高三英语牛津依林版一轮复习:模块必修3《Unit 1 The world of our senses》单元仿真检测】相关文章:
★ 【浙江专用】2014届高考英语一轮复习课时作业(十一)必修3Unit 1《Festivals around the world》
★ 【北京专用】2014届高考英语一轮复习方案课时作业:必修3 Unit 4 Astronomy:the science of the stars
★ 【浙江专用】2014届高考英语一轮复习课时作业(九)必修2Unit 4《Wildlife protection》
★ (安徽专用)2014届高考英语一轮复习方案 作业手册(14)模块5 《Unit 14 Careers》(含解析) 北师大版必修1
★ 【三维设计】2017版(江苏专用)二轮复习练习:必修3 Unit 3《Back to the past》单元检测(含解析)
★ 【北京专用】2014届高考英语一轮复习方案课时作业:必修1 Unit 3 Travel journal
★ 山西省永济市涑北中学高三英语总复习:美文欣赏(2)(The Real Courage)
★ 【三维设计】2017届高考英语(江苏专用)二轮复习课件:必修3 Unit 1《The world of our senses》
★ 【三维设计】2017版(江苏专用)二轮复习练习:必修4 Unit 1《Advertising》单元检测(含解析)
★ (安徽专用)2014届高考英语一轮复习方案 作业手册(15)模块5 《Unit 15 Learning》(含解析) 北师大版必修1
最新
2017-04-24
2017-04-24
2017-04-24
2017-04-24
2017-04-21
2017-04-21