__小题1:__ To begin with，cleaner environment，enjoying the game with hundreds of sports athletes and entertainment stars，and the opportunity of contacting people from all over the world seem exciting to the citizens._ 小题2:__ In most cases，bidding for the Olympics is well supported by both the public and the central government.
Unfortunately，this is not the entire view of the pretty picture. If looking from another angle，the Olympic bid might bring about some sideeffects to a city.
__小题3:__ It includes the increasing pollution of cars，more pressure on water resources，huge amount of wasted leaflets and other materials used for public activities，which are most probably neglected. In order to broaden the streets，some trees may have to be cut. Reduction of farmland may be caused by the need of setting up new sports centers or accommodation facilities. These environmental consequences can be especially serious in a resourcelimited and crowded city in a thirdworld country.
Besides，if not well managed and organized，the big event may not be so beneficial，and the new facilities may be forever empty after the games.__ 小题4:__
Finally，let’s think about the lowincome groups in the city.__ 小题5:__ More tax，more fees，more expensive property prices，and higher cost of living. These definitely are not good news for them.
A．Hosting the Olympics surely would bring about much gain to a city.
B．We can only benefit from it for a short time.
C．What will they get from the Olympics bidding?
D．First of all，it will bring a lot of environmental problems.E．There are many reasons for not hosting the Olympic Games.
F．There have been cases that host cities ended up with large debts.
G．Besides，it will definitely promote the emotion and pride in local people.
结合洛伦兹曲线图，基尼系数(G)可以直观定义为以下两部分面积之比：一是洛伦茨曲线L与绝对平均线OP围成的弓形面积，用S表示，代表收入分配不均等的部分；二是三角形OWP的面积。则基尼系数：G=S/△OWP面积。基尼系数基尼系数等于0，表示收入分配绝对平等；基尼系数等于1，表示收入分配绝对不平等。基尼系数越大，表明收入分配越不均等。