问题
单项选择题 共用题干题
在牙防所局部用氟预防龋齿研讨会上，专业人员就各种措施和方法进行探讨，对含氟牙膏的应用。
学龄前儿童用含氟牙膏刷牙应该（）
A.用含氟化钠的牙膏
B.用量要多些
C.用MFP的牙膏更好
D.监督指导下刷牙
E.不要用水漱口
答案
参考答案：D
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在牙防所局部用氟预防龋齿研讨会上，专业人员就各种措施和方法进行探讨，对含氟牙膏的应用。
学龄前儿童用含氟牙膏刷牙应该（）
A.用含氟化钠的牙膏
B.用量要多些
C.用MFP的牙膏更好
D.监督指导下刷牙
E.不要用水漱口
参考答案：D
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| Mr. Jackson works in a college. He likes reading and often 1 some books from the library. He keeps 2 to the radio every morning and reading 3 after dinner. So he knows much and teaches well. His 4 worship (崇拜) him very much. Mike, Mr. Jackson's little son, is only nine. He 5 likes reading books. And he often asks his father some questions. Mr. Jackson always thinks he is too 6 to understand him, so he chooses 7 ones to answer. Of course the boy is not satisfied with (对......满意) it. One day Mike read 8 about the electric lights and was 9 it when his father 10 him to do homework, he went on thinking 11 it. He asked him 12 questions, and his father answered all.Then his father said proudly, "Fathers always know 13 than sons!" The boy thought for a while and said, " 14 ." "Oh? Why?" Mike didn't answer and asked instead "Who invented the electric lights?" "Thomas Edison," answered Mr. Jackson. "Why didn't his father invent them then?" Mike asked again. Looking at his son, Mr. Jackson didn't know 15 to answer! | ||||
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