题目内容
M: Morning, Sue. Did you enjoy your holiday in the countryW: Yes, thanks. We had a great time. And some friends went with us.M: Where did you stay In a hotelW: No. We camped in the mountains, near Snowdon. We cooked all our meals over an open fire.M: Sounds wonderful. Was the weather goodW: The sun shone nearly every day and it didn’t rain at all.M: Did you like the people thereW: Yes, they were great. We met some farmers and had tea in their house.M: When did you get back Last nightW: No. This morning. You’ll think we were mad. We got up at 4: 30, left at 5:00 and arrived here at 9:00. I’m so tired. What about you Did you have a good weekendM: Yes, but I didn’t do much. I just stayed at home. The weather was terrible. Where did Sue spend the nights in the country()
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设F、C是二叉树中的两个结点，若F是C的祖先结点，则在采用后序遍历方法遍历该二叉树时，F和C的位置关系为：F必定在C的______。
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Now, you want to know about life in the past. Right I can tell you. When I was a boy, things were different. I had to get up at six every morning. That was not very bad in summer, but in winter it was cold. And we didn’t have any hot water in the house. We had to wash in cold water. We didn’t have a bathroom. My dad had some chickens. I had to feed them every morning and then I had to walk to school with my little sister. It was two miles to school and two miles back in the evening. But it always seemed longer in the morning when we were going to school. There was a bus, but we didn’t have the money. And we had to go to bed at seven o’clock every night. We couldn’t watch TV because there wasn’t any. On Sundays we had to go to the church three times-morning, afternoon and evening. And we couldn’t play outside on Sundays. But it wasn’t all bad. We had some good times. We could go to out and our parents didn’t have to worry about us. There weren’t so many cars on the roads then. So the streets were safe to play in. And there were not many robbers and thieves in those days. We had to work hard and we weren’t able buy all those things in the shops today. Life was hard. But it was simple and people were happier. I don’t think I’d like to be young today. Why did the man go to school on foot()
患者，男，28岁。1周前感冒咳嗽，现无恶寒发热，但咳嗽明显，痰黄稠难咯，胸闷，大便干，小便黄，舌红苔黄腻，脉滑略数。用药宜首选( )
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