2. 外语
  3. According to the passage, color blindness can be dangerous in certain occupations like ______. Why can’t bats and adult owls se

According to the passage, color blindness can be dangerous in certain occupations like ______. Why can’t bats and adult owls se

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问题 According to the passage, color blindness can be dangerous in certain occupations like ______.
Why can’t bats and adult owls see colors according to the passage?
选项
答案Because they have no cones.
解析 题目问为何蝙蝠和成年猫头鹰无法分辨颜色。根据关键词bats和adult owls定位第三段，该例是为了说明此段的主题句，即：Birds and animals which hunt at night have eyes which contain few or no cones at all，so they cannot see colors，由此得出答案。
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大学英语六级

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