单选题
发布日期:2021-11-24
0.5%NaF漱口液
0.05%NaF漱口液
0.2%NaF漱口液
1.0%NaF凝胶
2%NaF溶液
漱口是利用液体含漱从而清洁口腔的方法。通过漱口可清除食物残渣和部分松动的软垢,以及口腔内容易借助含漱力量而被清除的污物和异味。口腔内有感染,根据临床医生的处方和推荐,可以应用加入一定药物的漱口剂含漱,帮助减少口腔内致病微生物或抑制细菌的繁殖生长,起到一定的辅助治疗作用。但漱口不能替代刷牙,因为它不能有效地清除已经形成的牙菌斑。
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Cloze 10 A young woman was driving through the 1 countryside. It was dark and raining. Suddenly she saw an old woman 2 the side of the road, holding her hand out as if she wanted 3 . "I can't leave her out in this weather," the woman said to herself, so she stopped the car and opened the door. "Do you want a lift?" she asked. The old woman 4 and climbed into the car. After a 5 she said to the old woman, "Have you been waiting for a long time? " The old woman shook her head. " 6 ," thought the young woman. She tried again. "Bad weather for the time of the year," she said. The old woman nodded. No matter 7 the young woman said the hitchhiker (搭便车的人) gave no answer 8 a nod of the head. Then the young woman 9 the hitchhiker's hands, which were large and hairy. Suddenly she 10 that the hitchhiker was actually a man! She stopped the car. "I can't see out of the rear screen," she said, "Would you mind 11 it for me? " The hitchhiker nodded and opened the door. 12 the hitchhiker was out of the car, the frightened young woman 13 When she got to the next village she 14 to a stop. She noticed that the hitchhiker had left his handbag 15 . She picked it up and opened it. She gave a gasp (喘气); inside the bag was a gum !
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