履约担保是指发包人在招标文件中规定的要求承包人提交的保证履行合同义务的担保。它的形式

北京时间2010年11月24日晚上，在第16届广州亚运会男子110米栏的决赛中，背负众望的刘翔在起跑优势不明显的情况下，快速追赶并一路领先，最终以13秒09的成绩夺冠，并打破亚运会纪录，成就了自己的亚运三连冠．刘翔的亚运夺冠，宣布“飞人”已经重返巅峰状态．在比赛中，关于刘翔的下列说法正确的是（　　）

A．冲线时刘翔可以被视为质点

B．刘翔发生的路程与位移相同

C．刘翔全程的平均速度约为8.40m/s

D．冲线时刘翔的瞬时速度为8.40m/s

Read the following text and choose the most suitable heading from A-F for each paragraph. There is one extra heading which you do not need.

PARIS

小题1:Paris, the capital and the largest city of the country, is in north central France. The Paris metropolitan area contains nearly 20% of the nation’s population and is the economic, cultural, and political center of France. The French government has historically favored the city as the site for all decision making, thus powerfully attracting nearly all of the nation’s activities.

小题2:Paris has grown steadily since it was chosen as the national capital in the late 10^th century. With the introduction of the Industrial Revolution, a great number of people moved to the city from the country during the 19^th century. The migration was especially stimulated by the construction of railroads, which provided easy access to the capital. After World War II more and more immigrants arrived.

小题3:The city is the centralized 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.

小题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.

小题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 consumer 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 machinery, automobiles, chemicals and electrical equipment.

给出下面程序段： if(x＞0){System．out．println("Hello．")；} else if(x＞-3){System．out．println("Nice to meet you!")；} else{System．out．println("How are you")；} 若打印字符串“How are you”，则x的取值范围是【 】

A．x＞0

B．x＞-3

C．x＜＝-3

D．x＜=0&x＞-3

下列属于税收经济分析经济指标的是（）。

A.投资、消费

B.工业品出厂价格指数

C.规模以上工业增加值

D.批发和零售贸易业销售额

E.地区生产总值

阴阳不相维系，引起

A．阳虚则寒，阴虚则热
B．阳胜则热，阴胜则寒
C．阴盛格阳，阳盛格阴
D．阴损及阳，阳损及阴
E．阴虚则阳亢，阳虚则阴盛