单项选择题
A．A Unique Language School for Children B．The Foreign Language for Children to Learn C．Special Songs and Visual Aids in Learning D．The Best Way to Learn a Foreign Language
A．the phenomenon of birds dozing in pairs is widespread B．birds prefer to sleep in pairs for the sake of security C．even an imagined companion gives the bird a sense Of security D．a single pet bird enjoys seeing its own reflection in the mirror
A．The bikes were more expensive than it is today. B．People’s salary was very low. C．Most people could afford a bike. D．People lived in courtyard houses with very good equipment.