2. 职称英语
  3. A、The crested guan has a red throat pouch, giving the impression to its mate tha

A、The crested guan has a red throat pouch, giving the impression to its mate tha

游客2024-01-11  43
问题
选项 A、The crested guan has a red throat pouch, giving the impression to its mate that the throat contains a red fruit found in its niche.
B、The blue bowerbird spreads food of the same color around his nest, teaching its female young to identify the food as nutritious.
C、Insect-eating birds are less successful from an evolutionary perspective than birds which bear resemblance and subsist upon bright fruit.
D、The purple finch relies upon a variety of food sources, but the most nutritious food for birds general happens to be the same color as the finch’s coat.
E、A species of endangered sparrows resembles a food source no longer available in its niche, but the species continues to survive.
答案 A
解析
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