题目内容
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[主观题]
According to the passage, which is true about the ocean? A. The waters of the ocean c
According to the passage, which is true about the ocean?
A. The waters of the ocean came from rain water.
B. The ocean was formed from the, lighter rock materials.
C. The vast single ocean formed about 200 million years ago.
D. The ocean covered the whole surface of the earth at very beginning.
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