The moon, our          , travels           the Earth.It has         been visited by man in spaceships.
Man-made satellites have been sent up           space by many countries.They go round         .We used them           us to learn more           the Earth, the weather and other things.They are also used to           and receive massages.It makes people           different countries understand each other better.So people say the world itself is becoming a much           place.

A．satellite B．satellites C．Sun D．Earth

A．on B．near C．round D．before

A．just B．never C．before D．already

A．to B．into C．in D．over

A．the Sun B．the Earth C．The Moon D．the Sea

A．help B．helping C．to help D．helped

A．about B．for C．of D．on

A．send B．sending C．sends D．sent

A．come B．comes C．from D．form

A．larger B．bigger C．small D．smaller