2. 外语
  3. Among people who suffer from colour blindness, ______ . According to the passage, dogs and cats ______ .

Among people who suffer from colour blindness, ______ . According to the passage, dogs and cats ______ .

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问题 Among people who suffer from colour blindness, ______ .
According to the passage, dogs and cats ______ .
选项 A、as well as human beings cannot see some colours
B、have fewer cones than human beings
C、have less rods than human beings
D、can see colours as well as human beings
答案B
解析 推理题。  文章第四段最后一句说，猫和狗识别颜色的能力不如人类，而前文又说了不能识别颜色是因为视锥细胞少，由此，我们可以推出猫和狗的视锥细胞不如人类多。这里易误选的是A选项，注意文中的as well as是“不如…好”的意思，是比较级的as…as形式，不是“也”的意思。
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