According to the information given in Paragraph 5, we can conclude that the distance between the earth and the moon is approximately__________.

A．Hubble was lifted into orbit in 1990
B．Hubble orbited the earth 370 miles up
C．replacement mirrors were installed by the crew of the shuttle Endeavor
D．some lace curtains were pulled across Hubble's "window on the universe"

A．A collection or an assortment.
B．A building, an institution, or a room for the exhibition of artistic work.
C．An underground tunnel or passageway, as in a cave or one dug for military or mining purposes.
D．A photographer's studio.