2. 职称英语
  3. In some places leaves will fall off the trees before they change colors in the a

In some places leaves will fall off the trees before they change colors in the a

游客2023-09-16  33
问题 In some places leaves will fall off the trees before they change colors in the autumn. [br] The process that the veins gradually close off and trap sugars in the leaves will cause leaves______.
选项
答案 fall
解析 由题干中的veins gradually close of和trap sugars定位到第四个小标题下的第2、3句The veins…gradually close off…These clogged veins trap sugars in the leaf…；再由process定位到这段段首In early autumn…the processes leading up to their fall．此处需要填入名词性成分。本段首句是主题句，第2、3句是用来说明这个过程是怎样进行的，题干中的 cause与原文中的leading up to属同义转述。故答案为fall。
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