托福听力official15 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?
In general, it is believed that these two extinctions resulted from drastic environmental changes that followed meteorite impacts or massive volcanic eruptions.
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