from the moon, our earth, with water seven percent of its surface, appears as a “blue ball”.
| A．Seeing…covered | B．Seen…covered | C．Seeing…covering | D．Seen…covering |
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from the moon, our earth, with water seven percent of its surface, appears as a “blue ball”.
| A．Seeing…covered | B．Seen…covered | C．Seeing…covering | D．Seen…covering |
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