题目内容：

阅读下面对话，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空

Some people are great at remembering faces. While, there is evidence1. for some people, remembering a face can be difficult. Even for others, remembering a face may be impossible. Such people have a condition 2. (call) “face blindness”. Its actual name is Developmental Prosopagnosia, or DP 3. short.

Experts say DP can differ greatly from patient to patient. In less severe cases, people are unable to describe the face of someone they have just met. In severe cases, people cannot even recognize4. (they) own children in a group photo.

Those, 5. have DP, show no clear signs. Take Dacia for example. If you met her, you probably wouldn’t know that she suffered brain damage as a child. There would be no sign of it until you meet her 6. second time. She wouldn’t remember you at all. Dacia has mostly recovered from her 7. (injure). But now, she suffers form face blindness.

Once face blindness 8. (think) to be very rare. But recent 9. (study) have shown that it might be more common than experts thought. The study on face blindness will not directly lead to any treatments. However, it could lead to a much 10. (deep) understanding of how we all remember the world around us.