以下关于肝炎患者拔牙的叙述中，哪项是错误的（）
A.在肝炎急性期和慢性期均可拔牙
B.拔牙前应作凝血酶原时间检查
C.术中应加用止血药物
D.肝功损害严重者会导致术后出血
E.术中应注意防止医源性交叉感染
参考答案：A
解析：慢性肝炎肝功能有明显损害者，拔牙后易出血，故术前应作凝血功能检查，异常者应在术前2～3天给予维生素K及维生素C，术中还应加用局部止血药物，术中应注意病毒防护，避免院内感染，而急性肝炎期应暂缓拔牙。放此题选择A。
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| In Canada and the United States, people enjoy entertaining (请客) at home. They often invite friends over for a meal, a party or just for coffee and conversation. Here are the kinds of things people say when they invite someone to their homes: "Would you like to come over for dinner this Saturday night?" "Hey, we're having a party on Friday. Can you come?" To reply to an invitation, either say thank you and accept, or say you're sorry and give an excuse. "Thanks, Fd love to. What time would you like me to come?" or "Oh, sorry. I've tickets for a movie. " Sometimes, however, people use expressions that sound like invitations but which are not real invitations. For example; "Please come over for a drink sometime. " "Why not get together for a party sometime?" "Why don't you come over and see us sometime soon?" They are really just polite ways of ending a conversation. They are not real invitations because they don't mention a certain time or date. They just show that the person is trying to be friendly. To reply to expressions like these, people just say "Sure, that would be great!" or "OK. Yes, thanks. " So next time when you hear what sounds like an invitation, listen carefully. Is it a real invitation or is the person just being friendly? | ||||||||||||
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