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现代汉语的方言一般分为哪几大类？
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鸡葡萄球菌病
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牙龈红肿而痛者多属（）
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Smith is a 26-year-old single mother with a daughter. She was moving into her a-partment in Atlanta, Georgia early on the morning of March 12, when a man followed her and put a gun to her head. "I was opening my door and I felt really, really afraid," she said in a TV interview last week. The man was Brian Nichols, 33. He was suspected of killing three people on March 11 and later of killing a federal(联邦的)agent. The local police were searching for him. Nichols tied Smith up with tape, but released her after she repeatedly begged him not to take her life. "I told him if he hurt me, my little girl wouldnt have a mummy," she said. In order to calm the man down, she read to him from the purpose-driven life, a bestselling religious book. He asked her to repeat a paragraph about "what you thought your purpose in life was what talents were you given". And the two of them discussed this topic. Smith said, "I basically just talked to him and tried to gain his trust. " Smith said she asked Nichols why he chose her. "He said he thought I was an angel sent from God, and we were Christian sister and brother," she said. "And that he was lost, and that God led him to me. " She even cooked breakfast for the man before he allowed her to leave. She said Nichols was surprised when she made him breakfast and that the two of them watched television coverage(报道)that the police hunt for him. "I cannot believe thats me," Nichols told the woman. Then, Nichols asked Smith what she thought he should do. She said, "I think you should turn yourself in. If you dont, lots more people are going to get hurt. " Eventually, he let her go. Then she called the police. A US $ 60 000 reward had been posted for Nicholss capture. Authorities said they did not yet know if Smith should get that money.How did Smith feel when she saw a robber with her?A．Frightened.B．Frustrated.C．Nervous.D．Calm.
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“教学有法，但无定法”体现了教师劳动的什么特点？（）
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患儿男．7岁，高热一周曾抽搐2次。经治疗一周后热减，但仍时有肢体拘挛或强直，大便干结。查体：体温37.5℃，面色潮红，手足心热，舌光无苔，舌绛少津，脉象细数。此病例最恰当的诊断为（）
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什么是同型发酵、什么是异型发酵？
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肺泡性肺气肿是阻塞性肺气肿
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水电站检修排水的特征是（）。
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简述沙门氏菌快速检测方法研究进展。