______fromthemoon，ourearthwithwater______seventypercent...

問題詳情：

______ from the moon，our earth with water______ seventy percent of its surface，appears as a blue ball．

A．Seen; covered                                            B．Seen; covering

C．Seeing；covering                                       D．To see； to cover

【回答】

B

知識點：非謂語動詞

題型：選擇題