What has happened since the end of the Ice Age？

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• 听力原文：M: Oh, it's you, Mrs. Bramley. Come in and sit down. Now, what was it？ Oh, yes, your ankle. Has .there been any improvement since last week？

  W: Well, no, I'm afraid not, doctor. The leg's still the same. M: I'd better have another look at it. HM! It's still very swollen. Have you been resting it, as! told you to？ W: It's so difficult to rest it, doctor, you know, with a house to run, and six children to look after. M: Well, I've given you my advise. I'm sorry, but rest is necessary, otherwise I wouldn't have insisted on it. You must sit for at least four hours a day with the leg raised. Otherwise the ankle isn't going to improve. You understand that？ W: Yes, I understand, and I'll try to do as you say. M: Very well then. I'll repeat that prescription for tablets, but the only effective treatment is rest. Ask the next patient to come in please. What's wrong with the woman？ A．She needs to take more exercise. B．Her uncle's health has not improved. C．She can't understand the doctor. D．Her ankle is swollen.

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