问题
单项选择题
地表有()被海洋覆盖,被称为水圈。
A.50%
B.65%
C.70%
D.75%
答案
参考答案:C
解析:
全球海洋的面积约36200万平方公里(1400万平方里),大约占地球表面积的71%。故选C。
地表有()被海洋覆盖,被称为水圈。
A.50%
B.65%
C.70%
D.75%
参考答案:C
解析:
全球海洋的面积约36200万平方公里(1400万平方里),大约占地球表面积的71%。故选C。
阅读理解。 | ||||||||||||
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