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Antibiotics have no effect on diseases caused by viruses.

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The mast fundamental group to which a person belongs is the family. The institution of the family exists in almost every human culture. It is considered by behavioral scientists to be one of the oldest institutions in human history.The family unit serves many important functions. The performance of these functions is the reason for the family’s importance. Above all, the family serves as a mechanism of species survival.Families also have important economic functions. In primitive societies, the tasks of gathering food and providing shelter were divided among family members. Today, both husband and wife may work and share the duties of homemaking and child mating.In addition to its survival and economic functions, the family gives its members social status. In many societies, a person is not considered a complete member until he has married and produces children. Finally, the family helps to meet the basic emotional needs of a person through the love and support received from parents, siblings(兄弟姐妹) and relatives. According to the passage, which of the following is an example of the role of the family in giving status（）

A child is taught to respect his elders.
B. A couple works for several years to save for the purchase of a house.
C. A politician makes a campaign commercial with his family.
D. A mother comforts a child after he skins his kne

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提出“小儿稚阳未充，稚阴未长者也”的著作是( )

A. 《幼科发挥》
B. 《小儿药证直诀》
C. 《幼幼集成》
D. 《温病条辨》
E. 《颅囟经》

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She led the children to a place of (safe)（）

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Diseases can be prevented by means of vaccination or ____________________.

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