专业英语八级（改错）模拟试卷322grownup (题后含答案及解析)
rock with you题型有： 3. LANGUAGE USAGE
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PART III LANGUAGE USAGE
For the most part, the thousands of languages in the world today fall into one of two categories: tonal or nontonal. Two linguists believe they know the genetic underpinnings for the differences. During a study of linguisticand genetic data from 49 distinctive populations, the authors discovered a 【M1】______struck correlation between two genes involved in brain development and 【M2】______language tonality. Populations who speak nontonal languages have newer 【M3】______versions of the genes, with mutations that began to appear roughly 37thousand years before. ““You can consider this as the first of the many pos- 【M4】______sible studies that we could do to try to find a genetic basis for language and language typology and the different populations that speak a language,”“says Patrick Wong, the assistant professor at Northwestern University, who 【M5】______was n
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hotel room rviceot involved in this study. In English, the pitch which a word is spoken 【M6】______convey emotion but usually does not affect its meaning. But in many 【M7】______languages tone changes the meaning of words. For instance, the Chineword huar said in a high pitch means flower, but in a dipping pitch meaning 【M8】______picture. The new rearch ties this difference to tho two genes. The exact 【M9】______functions of both genes are still open to debate, so they are known to affect 【M10】______brain size during embryonic development. They presumably have something to do with brain structure, becau there are mutations of the genes that lead to microcephaly, a condition in which a person’s brain is much smaller than the average size for his or her age.
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