The ozone layer plays as great a role in the stability of spaceship Earth as ___

游客2025-05-08 1

问题 The ozone layer plays as great a role in the stability of spaceship Earth as ______ the waters of its lakes, ponds, oceans, rivers, and streams.

选项 A、do
B、does
C、play
D、are

答案 A

解析

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TheozonelayerplaysasgreataroleinthestabilityofspaceshipEarthas___