风口长短与鼓风动能的关系是什么？

When talking about the 2008 Olympic Games, you must think of the host city—Beijing. But maybe you don’t think of the other cities—Qingdao, Tianjin, Qinhuangdao, Shenyang, Shanghai and Hong Kong.
Qingdao held the Olympic sailing competition. Horse-riding events was held in Hong Kong. Tianjin, Qinhuangdao, Shenyang and Shanghai held football preliminaries (预赛).
The following form tells you more.

City	Event	Where	Time
Qingdao	Sailing	Qingdao International Sailing Center	Aug.9-Aug.21
Hong Kong	Horse-riding	Existing Competition Venue （沙田马术中心）	Aug.9-Aug.20
Tianjin	Football preliminaries	Tianjing Olympic Center Stadium	Aug.10, Aug.12
Qinhuangdao	Football preliminaries	Qinhuangdao Olympic Center Stadium	Aug.10, Aug.12
Shengyang	Football preliminaries	Shenyang Olympic Center Stadium	Aug.10’ Aug.12
Shanghai	Football preliminaries	Shanghai Stadium	Aug.10, Aug.12 Aug.13

根据短文和表格内容，选择正确的答案
小题1:How many cities were getting ready for the2008 Olympic Games?

A．One.

B．Six.

C．Seven.

D．Eight.

小题2:_______ held horse-riding events.

A．Qingdao International Sailing Center

B．Existing Competition Venue

C．Qinhuangdao Olympic Center Stadium

D．Shanghai Stadium

小题3:How long did football preliminaries take?

A．13 days.

B．12 days.

C．7 days.

D．3 days.

小题4:The sailing was held in _______.

A．Qingdao

B．Hong Kong

C．Qinhuangdao

D．Shanghai

小题5:Which of the following is NOT true?

A．Football preliminaries for the 2008 Olympics were held in four cities in China.

B．Horse-riding events for the 2008 Olympics lasted from Aug. 9 to Aug. 20.

C．Sailing for the 2008 Olympics lasted from Aug. 9 to Aug. 21.

D．Sailing events for the 2008 Olympics was held in Qinhuangdao.