The vision of education for ______ development is a world where everyone has the opportunity to benefit from quality education and learn the values, behavior and lifestyles required for a ______ future and for positive societal transformation.

A．What astronomers learned from the Surveyor and Apollo space missions.
B．Characteristics of the major terrains of the Moon.
C．The origin of the Moon's craters.
D．Techniques used to catalogue the Moon's land forms.

A．defined
B．spread
C．taught
D．discussed