tailieunhanh - IELTS Academic Reading Sample 106 - Colorblindness

Nhằm giúp các bạn đang chuẩn bị bước vào kì thi quốc tế có thêm tài liệu ôn tập, giới thiệu đến các bạn IELTS Academic Reading Sample 106 - Colorblindness để ôn tập nắm vững kiến thức cũng như giúp các bạn được làm quen trước với các dạng câu hỏi đề thi giúp các bạn tự tin hơn khi bước vào kì thi chính thức. | Questions 1-5 The following reading passage has five sections A-E. Choose the correct heading for each section from the list of headings. Write the correct number i-viii in boxes 1-5 on your answer sheet. NB. There are more headings than sections so you will not use them all. 1 Section A 2 Section B 3 Section C 4 Section D 5 Section E List of Headings i Colorblindness in different countries ii Diagnosing colorblindness iii What is colorblindness iv Curing colorblindness v Unsolved myths vi Animals and colorblindness vii Developing the ability to see color viii Colorblindness and the sexes Colorblindness A Myths related to the causes and symptoms of quot colorblindness quot abound throughout the world. The term itself is misleading since it is extremely rare for anyone to have a complete lack of color perception. By look ing into the myths related to color blindness one can learn many facts about the structure and genetics o the human eye. It is a myth that colorblind people see the world as if it were a black and white movie. There are very few cases of complete colorblindness. Those who have a complete lack of color perception are referred to as monochromatics and usually have a serious problem with their overall vision as well as an inability to see colors. The fact is that in most cases of colorblindness there are only certain shades that a person cannot distinguish between. These people are said to be 5 dichromatic. They may not be able to tell the difference between red and green or orange and yellow. A person with normal color vision has what is called trichromatic vision. The difference between the three levels of color perception have to do with the cones in the ZIM ACADEMY Room 2501 Ocean Group Building 19 Nguyen Trai Thanh Xuan Dist Hanoi human eye. A normal human eye has three cones located inside the retina the red cone the green cone and the yellow cone. Each cone contains a specific pigment whose function is to absorb the light of these colors and .