2. 外语
  3. In this passage the author argues that______。 According to the author, in factory, vegetable food______。

In this passage the author argues that______。 According to the author, in factory, vegetable food______。

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问题 In this passage the author argues that______。
According to the author, in factory, vegetable food______。
选项 A、is easy for chickens to digest
B、is insufficient for the needs of poultry
C、is fully utilized in meat and egg production
D、is inefficiently converted into meat and eggs
答案D
解析 原文第二段说明大规模的肉禽生产是浪费粮食资源。因为给动物(禽类)以蔬菜的形式喂进去的蛋白质要比以肉的形式转化出来的蛋白质多。因此，选项D是最接近这层含义的选项，是正确答案。
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