简述突然停汽（压缩真空全部停下），碳化岗位应如何操作？

【1】People study their family history for different reasons. For some, genealogy(家谱学) is important to their religion. Other people who get involved in genealogy may want to confirm stories they heard about a family member. Some people say their interest in genealogy came from an eight-part series on television called Roots. Roots was first broadcast in 1977 and was based on a book which describes how the author’s ancestor, long ago in Africa, as slave was brought to America. After watching Roots, many Americans wanted to study ________________.

【2】Finding family roots is not always easy. So how exactly does someone start a genealogical research ?

【3】Experts say you should start with yourself. Write down your own history. One idea is to ask your parents what they can remember about their parents or grandparents. You can often find a lot of information in family pictures, letters and other documents.

【4】Resources on local history may also provide useful information. Large libraries may have hundreds of helpful books. In the United States, several groups have large collections of genealogical materials. These collections are open to the public.

【5】Governments often have many helpful records of genealogists. Governments usually keep official copies of birth, marriage and death records. Local governments may have copies of wills. These statements of final wishes often contain details about a person’s life and wealth.

【6】Today, many people use the Internet. There are thousands of web sites related to genealogy. They can guide people to historical records and provide information about how to write down their family’s history.

小题1:What is the passage mainly about ? (no more than 10 words)

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小题2:How many ways are mentioned in how to start a genealogical research ? (no more than 2 words)

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小题3:Fill in the blank in Paragraph 1 with proper words. (no more than 6 words)

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小题4:Why should people ask governments for help in the study of genealogy ? (no more than 8 words)

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小题5:What does the underlined word “They ” (Paragraph 6 ) probably refer to ? (no more than 5 words)

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据天气预报，某地今天的最低气温23°C，最高气温34°C，则今天该地的气温极差为       .

诗句“说出那句真心的话吧!／种下的爱情已该收获。”是下列哪位诗人的诗句？（）

A.臧克家

B.闻捷

C.洛夫

D.绿原

被称为德国装甲兵之父的是谁？

我国的《公路沥青路面再生技术规范》建议水泥等活性填料一般不超过（）

A.1%

B.1.5%

C.2%

D.2.5%