2. 外语
  3. In some places leaves will fall off the trees before they change colors in the autumn. The leaves of evergreens can survive the

In some places leaves will fall off the trees before they change colors in the autumn. The leaves of evergreens can survive the

admin2009-04-23  97
问题 In some places leaves will fall off the trees before they change colors in the autumn.
The leaves of evergreens can survive the winter because they are ______and fluid inside their cells contains cold-resisting substances.
选项
答案covered with a heavy wax coating
解析 由题干中的evergreens，survive the winter和fluid inside their cells定位到第五个小标题下第2段第1、2、3句内容The evergreens…survive winter because…leaf is covered with a heavy wax coating and the fluid inside their cells contains substances that resist freezing…此处需要填入原因状语从句的谓语成分。本段第2句说明了常青植物的叶子是如何能够抵御寒冷的；题干中的cold—resisting substances与原文中的substances that resist freezing属同义转述。故答案为covered with a heavy Wax coating。
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