问题
单项选择题
The author mentions "outer space" underlined in Paragraph 1 because ______.
A．the Earth's climate millions of years ago was similar to conditions in outer space
B．it is similar to the ocean floor in being alien to the human environment
C．rock formations in outer space are similar to those found on the ocean floor
D．techniques used by scientists to explore outer space were similar to those used in ocean exploration
答案
参考答案：B
解析：[分析] 推断题型。 从第一段最后一句中的...in some ways as forbidding and remote as the void of outer space．可以推断出答案是B项。