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Jang Joonggun
two other types of moquitoes text: A particular type of mosquito carring the disease was eliminated. However yellow fever epidemics continued to occur elsewhere. Scientists then realized that 'two other types of moquitoes' also carried the disease. 1. How many types of mosquitoes carried the disease? 2, 3 or ambiguous? 2. if 'two other types of mosquitoes' is replaced with 'two different types of mosquitoes', then?
Oct 14, 2016 5:57 PM
Answers · 1
In total 3 types of mosquito carried the disease, one of which had already been eliminated by the time that scientists figured out that two other mosquitoes also carried the disease. The text says "two other," mosquitoes rather than "two different mosquitoes," because it wants to tell you that the two extra types of mosquitoes are in addition to the one that was eliminated.
October 14, 2016
Jang Joonggun
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English, Korean
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