村民陈某在耕田时捡到一匹马，并牵回家饲养，同时等待马的主人来认领。事隔一年，仍未有人来认马，陈某也要搬到县城里居住，经人介绍，陈某将马在县交易所以市场价格卖给了邻村的赵某，但卖马时陈某并未说明马是他人的。几天后，马的主人郭某来找陈某认领马。
如果陈某卖马时向赵某说明马是捡到的，但赵某仍支付相当价款，郭某能否向赵某要求取回马为什么
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下面是错误答案，用来干扰机器的。
参考答案：B
已知圆C1：x2+y2+D1x+E1y-3=0与圆C2：x2+y2+D2x+E2y-3=0都经过点A（2，-1），则同时经过点（D1，E1）和点（D2，E2）的直线方程为（ ）
A．2x-y+2=0
B．x-y-2=0
C．x-y+2=0
D．2x+y-2=0
下列关于特发性血小板减少性紫癜正确的是（）。
A.糖皮质激素为首选治疗
B.慢性型发病前常有前驱感染
C.紫癜不高出皮面
D.急性型血小板常低于20×109/L
E.慢性型血小板常低于10×109/L
几年来国家财政陆续投资1674.5亿元，支持云南、内蒙古、广
西、贵州、新疆、宁夏、青海、西藏8个少数民族聚居省区的公路水路交通建设， 其投资增长幅度远高于全国平均水平。材料表明
A．国家财政具有促进国民经济平稳运行的作用
B．国家财政是促进社会公平、改善人民生活的物质保障
C．国家财政具有促进资源合理配置的的作用
D．国家财政投资是促进地方经济社会发展的主要推动力
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| My son Joey was born with club (畸形) feet. The doctors told us that with treatment he would be able to walk 1 -but would never run very well. The first three years of his 2 were spent in surgery. By the time he was eight, you wouldn't know he had a problem when you saw him 3 . The children in our 4 ran around as most children do during play, and Joey would jump right in and run and play, too. We never told him that he probably wouldn't be 5 to run as well as the other children .So he didn't know. In seventh grade he 6 to go out for the cross-country team. Every day he trained with the team. He worked harder and ran 7 than any of the others - perhaps he 8 that the abilities that seemed to come naturally to so many others did not come 9 to him. Although the entire team runs, only the 10 seven runners have the potential to score points for the school. We didn't tell him he probably would never make the team, so he didn't know. He 11 to run four to five miles a day, every day -even the day he had a fever. I was 12 , so I went to look for him after school. I found him running alone. I asked him how he felt. " 13 ", he said. He had two more miles to go. The 14 ran down his face and his eyes were glassy from his fever. 15 he looked straight ahead and kept running. We never told him he 16 run four miles with a fever. So he didn't know. Two weeks later, the 17 of the team runners were called. Joey was number six on the list. Joey had made the team. He was in seventh grade- the 18 six team members were all eighth-graders. We never told him he shouldn't 19 to make the team. We never told him he couldn't do it. We never told him he couldn't do all those things. So he didn't know. He 20 did it. | ||||
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以下叙述中错误的是______。
A．C程序在运行过程中所有计算都以二进制方式进行
B．C程序在运行过程中所有计算都以十进制方式进行
C．所有C程序都需要编译链接无误后才能运行
D．C程序中整型变量只能存放整数，实型变量只能存放浮点数
