当有病人需要急救的时候，你应该拨打：
A．oneonenine B．onetwozero
How many continents do you know ?
A. 6 B. 5 C. 4
Gansu is in the ________ of China.
A. west B. south C. east
Hummingbirds live in the ___________。
A. air B. river C. land
__________is famous for the Effie Tower .
A. Spain B. France C. Russia
Kangaroos are in _________________
A. Europe B. Australia C. America