OG1 阅读 Q42

Choice B is the best answer. The author of Passage 1 identifies specific companies such as the "Planetary Resources of Washington," "Deep Space Industries of Virginia," and "Golden Spike of Colorado" to support his earlier assertion that there are many interested groups "working to make space mining a reality" (line 8,"working to ... mining a reality.").
Choices A, C, and D are incorrect because the author of Passage 1 does not mention these companies to profile the technological advances in space mining, the profit margins from space mining, or the diverse approaches to space mining.