2. 外语
  3. Ordinary plants are unable to survive in the desert mainly because of the changeable weather. Desert perennials lose their leav

Ordinary plants are unable to survive in the desert mainly because of the changeable weather. Desert perennials lose their leav

admin2009-06-15  59
问题 Ordinary plants are unable to survive in the desert mainly because of the changeable weather.
Desert perennials lose their leaves after the rainy season just as trees in wetter climates lose theirs in wetter climates because winter arrives, but the reasons for this features are different.
选项 A、Right
B、Wrong
C、Not mentioned
答案B
解析 利用核心结构(新信息结构)“Lose leaves”作为答案线索词，不难在最后一段的第1句中找到答案相关句。该句表明它们落叶的原因是一致的：都是为了减少水分的蒸发。
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