2. 外语
  3. If people can’t tell all kinds of colors, we can say they are color-blind. Most color-blind people can see【T1】______ but cannot

If people can’t tell all kinds of colors, we can say they are color-blind. Most color-blind people can see【T1】______ but cannot

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问题     If people can’t tell all kinds of colors, we can say they are color-blind. Most color-blind people can see【T1】______ but cannot tell red from green. Very few people are blind to all kinds of colors, but they may see black and white. It’s【T2】______that many color-blind people don’t think they are color-blind. Well, the reason is that they don’t know that they can’t see or name the real colors. This can be dangerous when a color-blind person is passing the【T3】______Some people are【T4】______color-blind.
    And though doctors have tested many times on the reason for color-blindness, there is still no good reason for it at all. So there is still no way to【T5】______the color-blindness.
【T3】
选项
答案traffic lights
解析 根据空格前的定冠词the判断空格处缺少名词。结合录音，填入traffic lights“交通灯，红绿灯”，light在这里为复数，别漏了-s。
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