题目内容
________ from the moon,our earth with water ________ seventy percent of its surface,appears as a blue ball.
A. Seen;covered B. Seeing;covering
C. Seen;covering D. Seeing;covered
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题目内容
________ from the moon,our earth with water ________ seventy percent of its surface,appears as a blue ball.
A. Seen;covered B. Seeing;covering
C. Seen;covering D. Seeing;covered