英语听力精选进阶版 13755（在线收听） |
Sight problems for students in Asia Vocabulary emphasis special importance a heavy price a high cost / a big loss exposure time spent being in contact with something visual impairment damaged sight nap short sleep genetic connected with genes (units in the cells of a living thing that control its physical characteristics) a big role a major cause ethnic groups people connected by different nationalities or race myopia short-sightedness mandatory compulsory |
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