A—Expo Emblem
B—Expo Logo
C—Expo Mascot
D—Expo Souvenir
E—Expo Park
F—the Expo Site
G—Theme Pavilion
H—International Pavilion
I—Enterprise Pavilion
J—the Expo Village
K—the Expo Center
L—Expo Dining Center
M—Symposium
N—Expo First-aid Center
O—Volunteers
P—International Convention Center
( )世博急救中心 ( )企业馆

A musical-hall song of some years ago was called, "If you want to know the time, ask a policeman." Nowadays, most people own watches but they still seem to find plenty of other questions to ask the police- man. In London, the policemen spend so much of their time directing visitors about city that one wonders how they ever find time to do anything else!

A. Mary got up later than usual. B. The train was late.
C. Mary missed the train. D. Her clock was out of order.