问题
选择题
下列关于长骨的描述中，错误的是[ ]
A．骨膜的成骨细胞与骨的长粗有关
B．骺端软骨层的细胞与骨的长长有关
C．幼年时骨髓腔内为红骨髓，有造血功能
D．成年后骨髓腔内为黄骨髓，永远失去造血功能
答案
答案：D
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下列关于长骨的描述中，错误的是[ ]
A．骨膜的成骨细胞与骨的长粗有关
B．骺端软骨层的细胞与骨的长长有关
C．幼年时骨髓腔内为红骨髓，有造血功能
D．成年后骨髓腔内为黄骨髓，永远失去造血功能
答案：D
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| Two days ago, Bob _ 1 a letter from his girlfriend, Mary. She wrote, "I'll leave Beijing for London at ten on June 3rd. Please meet me at the 2 ." Now Bob was standing at the airport and 3 some flowers. He was 4 because Mary's plane was three hours late, but 5 knew why. Bob walked over to the bar at the airport and had a drink. He walked back to the gate. There was still 6 news. He walked back to the bar and had 7 drink. 8 , Mary's plane landed and the people on the plane started coming out. Bob smiled and 9 Mary. After a time he stopped 10 because the last one from the plane was not Mary. Bob said to himself. " 11 luck! What has happened to her? "He went over to 12 . 6/ My name is Bob Waston," he said, "Have you got any message 13 me?" " Yes," said the girl standing there. " A telephone message from 14 ." With the words, she handed him a piece of paper. " Mr Bob Waston, London Airport. Sorry, I'll return next Sunday. " Bob thanked the girl at the airport, gave the 15 to her and said goodbye. | ||||
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