问题
单项选择题
“YAG”中文名称是：（）.
A.人造钇铝榴石
B.人造钆镓榴石
C.人造钛酸锶
答案
参考答案：A
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“YAG”中文名称是：（）.
A.人造钇铝榴石
B.人造钆镓榴石
C.人造钛酸锶
参考答案：A
| 完形填空。 | ||||
| The back door of the ambulance (救护车) was quickly closed and the driver ran to the front, 1 into his seat and started the engine (发动机). Inside were the 2 parents, Mr and Mrs Green, the mother holding their baby daughter Ally. The little girl had some food in her throat (喉咙) and could hardly breathe. The driver, Mr White, turned on his siren (报警器) and started speeding towards the nearest hospital, fighting against 3 . The cars ahead of him pulled out of the way as he 4 the ambulance through the busy traffic. From the back of the ambulance the parents were shouting at him to hurry, since Ally had almost stopped 5 . In front of him he saw some traffic lights with the red "STOP" lights shining. Mr White knew that he had no time to stop, so he drove straight past the traffic lights, looking to his left and right as he did so. Coming towards him from his right was a taxi. The taxi driver had the windows 6 , since the car was air-conditioned (开空调的), and he was playing his radio. He did not 7 the ambulance. The lights were green, so he drove straight on into the path of the ambulance. Mr White tried to stop his ambulance, but it was too late. It hit the taxi. Everybody was shaken but no one was hurt. Mr White turned to see 8 little Ally was. He was 9 to see relief (宽慰) instead of anger on the faces of the parents. "Look!" cried Mrs Green. "She is breathing again." "It must have been the crash," said her husband. "It took the food out of her throat." The baby's color was turning to normal, and she was crying in a loud but healthy 10 . They were all joyful, and quite forgot about the accident, the taxi, and the lines of people all around them. | ||||
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，且松动Ⅲ度，牙龈红肿，牙槽嵴高度适中，颌间距离正常。