问题
单项选择题
美沙酮属于（）
A.生物碱类
B.哌啶类合成镇痛药
C.氨基酮类（芳基丙胺类）合成镇痛药
D.半合成镇痛药
E.内源性多肽
答案
参考答案：C
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美沙酮属于（）
A.生物碱类
B.哌啶类合成镇痛药
C.氨基酮类（芳基丙胺类）合成镇痛药
D.半合成镇痛药
E.内源性多肽
参考答案：C
Eric was standing in front of a large, gray house in the countryside. He had just been dropped off by his mum, who left after telling him that he was going to the next twelve days there with no TV, no mobile phone and worst of all—no . Just then, a man appeared* at the gate of the house. When he saw Eric, he went up to him immediately*. "I'm you are Eric. Welcome to Camp Reboot," said the man proudly. "I'm Tony, the camp leader*, but you will me 'Sir'. Now you tell me you're here." Eric quickly replied, "My mum made me here!" When Tony looked angrily him and did not say , Eric realized his mistake and added, "Sir!" "And do you know why your mother sent here? Asked Tony. "She thinks I spend too much time online—that I can't live without the Internet... Sir," answered Eric. "It's not just her opinion. It's the ! Look at you—tired, unhealthy and certainly not getting sleep. You're here because you think your world on the Internet is much than the real world. But you're wrong! The real world has much more to offer. At Camp Reboot, you're going to go hiking, boating, rock-climbing and stay outdoors most of the ," said Tony. Eric's heart broke. "But it's not going be all fun and games." Tony continued. " We have rules here. you break them, you'll never be sent home ! Instead, you'll have to sweep the floor, wash the dishes or do an extra hour of exercise!" "Oh, my God!" cried Eric. "What have you got me into, Mum?"
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