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1£®Which one can not benefit from the exploration of the oceans according to the passage?

A£®The discovery of natural resources.

B£®Trade and economy.

C£®Biological discoveries.

D£®Archaeological discoveries.

2£®Which one do you think make China become the world's top ocean explorer?

A£®China's discovery of an ice­like substance.

B£®The discovery of bone­white coral.

C£®The Jiaolong holds the record for the deepest dive by a manned submarine.

D£®China's cooperation with other countries.

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