Surprisingly to those who view the ocean floor as a uniformly ______ waste, each vent in the floor, where seawater is heated by

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问题 Surprisingly to those who view the ocean floor as a uniformly ______ waste, each vent in the floor, where seawater is heated by the earth’s inte-rior magma, has been found to be an island-like ______ with its own distinctive fauna.

选项 A、teeming...habitat
B、lifeless...enclave
C、barren...oasis
D、sunken...grotto
E、hazardous...environment

答案C

解析
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