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cogiaoman12
2 năm trước
cho đường tròn (o) từ 1 điểm M. ở ngoài đường tròn (O)kẻ 2 tiếp tuyến MA , MB với đường tròn ( A,B tiếp điểm ) a.Cm tứ giác MAOB nội tiếp b. vẽ đường kính BK của đường tròn (O) điểm N là giao điểm của AB và MO, C là giao điểm thứ 2 của MK và đường tròn (O)chứng minh góc BCN=góc ABK c. Gọi H là điểm trên BK sao cho AH vuông góc BK. Điểm I là giao điểm của AH, MK. Chứng minh I là trung điểm HA
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Giúp mình với ạ Belonging to a family is one bond almost everyone in the world shares, but family patterns vary from country to country. The United States has many different types of families. While most American families are traditional, comprising a father, mother and one or more children, 22.5 percent of all American families in 1983 were headed by one parent, usually a woman. In a few families in the United States, there are no children. These childless couples may believe that they would not make good parents; they may want freedom from the responsibilities of child-rearing; or, perhaps they are not physically able to have children. Other families in the United States have one adult who is a stepparent. A stepmother or stepfather is a person who joins a family by marrying a father or mother. Americans tolerate and accept these different types of families. In the United States, people have the right to privacy and Americans do not believe in telling other Americans what type of family group they must belong to. They respect each other’s choices regarding family groups. Families are very important to Americans. One sign that this is true is that Americans show great concern about the family as an institution. Many Americans believe there are too many divorces. They worry that teenagers are not obeying their parents. They are concerned about whether working women can properly care for their children. Families give Americans a sense of belonging and a sense of tradition. Families give Americans strength and purpose. Families serve many functions. They provide a setting in which children can be born and reared. Families help educate their members. Parents teach their children values - what they think is important. They teach their children daily skills, such as how to ride a bicycle. They also teach them common practices and customs, such as respect for elders and celebrating holidays. The most important job for a family is to give emotional support and security. 1. How many types of families exist there in the USA? A. Two B. Three C. Four D. Five 2. What is the attitude of Americans to the types of family groups? A. permissive B. disagreeable C. careless D. reckless 3. Why is a family important to Americans? A. Because marriage is not easy in America B. Because family is the best place for them to live in C. Because only women in families are able to care for their children well D. Because family gives them strength and purpose 4. Why do some couples prefer to be childless? A. They accept that they would not make good parents B. They don’t want to have responsibilities for childcare C. They are not physically able to have children. D. All of the above 5. What sense do families give to Americans? A. a sense of freedom and a sense of jewellery B. a sense of belonging and a sense of tradition C. a sense of belonging and a sense of wonder D. a sense of humour and a sense of tradition 6. What functions do families serve? A. habitat and food B. money and life skills C. emotional support and security D. joyfulness and daily supplies

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