问题详情

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.
A．teeming...habitat
B．lifeless...enclave
C．barren...oasis
D．sunken...grotto
E．hazardous...environment请帮忙给出正确答案和分析，谢谢！