问题
选择题
Seen from space, the earth looks like a blue ball, with __________ 75% of its surface covered with
water. [ ]
A. entirely
B. exactly
C. slightly
D. approximately
答案
答案：D
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Seen from space, the earth looks like a blue ball, with __________ 75% of its surface covered with
water. [ ]
A. entirely
B. exactly
C. slightly
D. approximately
答案：D
10mm，覆盖2mm，上颌
和下颌
开
远中移动（）