托福听力official12 Look at the four squares [[span class='strong-insert']][[/span]] that indicate where the following sentence could be added to the passage.Where would 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 would the sentence best fit?
When this research resulted in the development of vastly improved sound techniques, film studios became convinced of the importance of converting to sound.
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