青少年时期是人生的黄金时期，身体迅速发育，特别要注意坐、立、行、走的姿势，其主要

根据文章内容，从方框A-F选项中，选出每一段的小题或能概括主题思想的最佳选项，选项中有一项为多余选项。

1．

Paris, the capital and the largest city of the country, is in north central France． The Paris contains nearly 20% of the nation’s population and is the economic, cultural, and political center of France． The French government have historically favored the city as the site for all decision making, thus powerfully attracting nearly all of the nation’s activities．

2．

Paris has grown steadily since it was chosen as the national capital in the late 10th century． With the introduction of the Industrial Revolution, a great number of people moved to the city from the country during the 19th century． The migration(移居) was especially stimulated（增强） by the construction of railroads, which provided easy access（通路） to the capital． After World War II more and more immigrants（移民） arrived．

3．

The city is the centralized（集中的） control point of most national radio and television broadcasting． It is a place of publication of the most prestigious（有威望的）newspapers and magazines and an international book publishing center． With more than 100 museums, Paris has truly one of the greatest concentrations of art treasures in the world． The Louvre, opened as a museum in 1793, is one of the largest museums in the world．

4．

In the late 1980s about 4．1 million pupils annually attended about 47,000 elementary schools． In addition, about 5．4 million students attended some 11,200 secondary schools． Approximately 1．2 million students were enrolled annually at universities and colleges in France in the late 1980s． French centers of learning have served as academic models throughout the world．

5．

Paris is the leading industrial center of France, with about one quarter of the nation’s manufacturing concentrated in the metropolitan area． Industries of consumers goods have always been drawn to Paris by the enormous market of the big population; and modern, high-technology industries also have become numerous since World War II． Chief manufactures are machinary, automobiles, chemicals and electrical equipment．

按照我国《钢质海船入级规范》中要求，一般船舶电气设备当船舶电网电压的稳态值在（）额定值的范围内变化时应能有效地工作。

A．－6%～+10%

B．高于10%～低于6%

C．小于10%

D．小于±6%

所谓租船运输是指货主有较多的货物，需要船舶的全部或部分舱位，与单独磋商，签订船舶租用合同而进行的运输。

A．收货人

B．承运人

C．船东

D．船长

股票基金通过分散投资可以大大降低个股投资的系统性风险，但却不能回避非系统性投资风险。( )

凿井注浆孔对浆液的要求包括（）。

A.在泵压作用下能进入岩层裂隙一定范围

B.能在水中凝结，并具有一定强度

C.浆液凝结时间可调节