问题
选择题
________ from space, the earth , with water_______ seventy percent of the surface , looks like a blue ball.
A.Seen ; covered
B.Seen ; covering
C.seeing ; covering
D.Seeing ; covering
答案
答案:B
________ from space, the earth , with water_______ seventy percent of the surface , looks like a blue ball.
A.Seen ; covered
B.Seen ; covering
C.seeing ; covering
D.Seeing ; covering
答案:B