Whats the distance did the spacecraft make the free fall？A．130 meters.B．130 kilometers.C．1

A． timeB． rangeC． distanceD． space

Which of the following can best describe the passage？A．Communication shortens the distance

According to the passage,A．the distance between people can be fixed.B．the distance kept be

Whats the main idea of the news item？A．The launching of the space shuttle Discovery has be

Whats the problem of space shuttle Discovery？A．The space shuttle can"t reenter the earth"s

Did you know that all human beings have a comfort zone regulating the distance they stan