Welcome to the World Expo 2010 Shanghai China. In order to protect the interests and rights of visitors and ensure a safe and orderly visit, the organizer of Expo 2010 has made these Terms and Conditions.
Article 1 Scope of Application
These Terms and Conditions are applicable to (适用于) all visitors to Expo 2010, including those who enter the Expo Site with valid tickets and children at or below 1.2m at the time of entry, who are suitable for free admission.
Article 2 Operation Time
The operation time of the Expo Site shall be 9:00 ~ 24:00. The opening hours of the exhibitions shall be 9:30 ~ 22:30. Visitors shall enter the Expo Site before 21:00 and leave before 24:00 on the day of admission. Those with evening admission tickets may enter the Expo Site between 1
7:00 and 21:00.
Article 3 Orderly Entry
Visitors shall go through ticket pre-check, security check and ticket confirmation in an orderly fashion before entering the Expo Site. Those who refuse to cooperate may be denied entry by the Organizer.
Children suitable for free admission and other visitors with mobility difficulties may only enter the Expo Site when accompanied by adults. Those under the influence of alcohol and the persons suffering from mental disorders are not allowed to enter.
Article 4 Exhibitions and Performances
Visitors may visit exhibitions and watch performances in the Expo Site at no additional charge.
1. Which of the following statement is true according to the text?
A. At the time of entry ，children below 1.2m needn’t buy tickets to enter the Expo Site.
B. Visitors must pay additional fee to watch performances in the Ex
po Site
C. Children below 1.2m can enter the Expo Site by themselves.
D. Before entering the Expo Site, visitors shall go through ticket pre-check and security check.
2. Mr.Wang has got an evening admission ticket , how long can he stay in the Expo Site at most?
A. 15 hours. B. 13 hours. C. 7 hours. D. 4 hours.
3. What does “Those under the influence of alcohol " mean?
A. Visitors with mobility difficulties.
B. The persons who are drunk.
C. Visitors who refuse to cooperate.
D. The persons who sell alcohol.
，故全过程的平均速度等于
，解得：vm=5m/s