问题
单项选择题
窝沟封闭操作方法不需要
A．清洁牙面
B．酸蚀
C．冲洗、干燥
D．粘结剂
E．涂布封闭剂，光照
答案
参考答案：D
解析：窝沟封闭的操作步骤为清洁牙面，酸蚀，冲洗干燥。涂布封闭剂，固化和检查。所需材料有酸蚀剂和封闭剂。粘结剂常用于正畸，口外等釉质和托槽粘接等项，窝沟封闭不需要粘结剂。
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窝沟封闭操作方法不需要
A．清洁牙面
B．酸蚀
C．冲洗、干燥
D．粘结剂
E．涂布封闭剂，光照
参考答案：D
解析：窝沟封闭的操作步骤为清洁牙面，酸蚀，冲洗干燥。涂布封闭剂，固化和检查。所需材料有酸蚀剂和封闭剂。粘结剂常用于正畸，口外等釉质和托槽粘接等项，窝沟封闭不需要粘结剂。
阅读下面短文，根据方框中所给的词语和短文内容, 在空白处填入适当词语，要注意必要的词形变化，使短文内容完整。(5分)
Today is Friday. Mr. Green 小题3:_____________ home very late because he is busy at the office. He is angry when he finds there isn’t anything to eat. He 小题4:_____________ to his wife, “I’m going to eat in a restaurant.” “Wait for ten minutes.” says Mrs. Green. “Why? Do you 小题5:_____________ supper can be ready in ten minutes?” asks Mr. Green. “No, of course not,’ she says. “I’m ready to go with you in ten minutes.” |