tailieunhanh - How to prepare for the ielts listening part 6

Anytime you have a chance, study the next set of questions. Make assumptions about what you think you will you make assumptions, ask yourself: Who? What? When ? Wh&re? and How? | READING SKILLS 61 D Part of the reason there are so many inconsistencies related to colorblindness or color vision deficiency as it is called in the medical world is that it is difficult to know exactly which colors each human can see. Children are taught from a very young age that an apple is red. Naming colors allows children to associate a certain shade with a certain name regardless of a color vision deficiency. Someone who never takes a color test can go through life thinking that what they see as red is called green. Children are generally tested for colorblindness at about four years of age. The Ishihara Test is the most common though it is highly criticized1 because it requires that children have the ability to recognize2 numerals. In the Ishihara Test a number made up of colored dots is hidden inside a series of dots of a different shade. Those with normal vision can distinguish the number from the background while those with color vision deficiency will only see the dots. E While many of the myths related to colorblindness have been busted by modern science there are still a few remaining beliefs that require more research in order to be labeled as folklore. For example there is a longstanding belief that colorblindness can aid military soldiers because it gives them the ability to see through camouflage. Another belief is that everyone becomes colorblind in an emergency situation. The basis of this idea is that a catastrophic event can overwhelm the brain causing it to utilize3 only those receptors needed to perform vital tasks. In general identifying color is not considered an essential task in a life or death situation. Multiple-Choice Questions Questions 6-8 Choose the correct letter A B C or D. Write your answers in boxes 6-8 on your Answer Sheet. 6 People who see color normally are called A monochromatic. B dichromatic. C trichromatic. D colorblind. 7 Children usually begin to see a variety of colors by the age of A one month. B four months. C one .