OG8 阅读 Q34

Choice B is the best answer. The previous question asks about how Douglas, in Passage 1, characterizes the Constitution's provisions for slavery. The answer, that Douglas believes they provided a good basic structure and don't need to be changed, is best supported in the first sentence of the second paragraph of Passage 1: "I now come back to the question, why cannot this Union exist forever, divided into Free and Slave States, as our fathers made it?"
Choices A, C, and D are incorrect because the cited lines don't support the answer to the previous question. Instead, they describe the various ways in which the nation has expanded since its founding (choice A), stress the likelihood that the nation will only continue to expand (choice C), and assert the importance of the sovereignty of individual states to the future expansion of the nation (choice D).