托福听力official10 Look at the four squares [[span class='strong-insert']][[/span]] that indicate where the following sentence could be added to the passage. Where could the sentence best fit?
答案解析
13.Look at the four squares [[span class='strong-insert']][[/span]] that indicate where the following sentence could be added to the passage. Where could the sentence best fit?
Foreign trade was also responsible for certain innovations in coloring.
B 两个过渡点，名词foreign trade和coloring。foreign trade对应原文第四句的from Middle East Chinese acquired blabla和倒数第二句的trading activities，所以B/C/D都有可能；coloring证明B或者C正确。按照正常逻辑，应该先总起，说外贸也使染色技术发生变化，接着再说怎么变的，所以B正确，C错误。
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