Geologists once thought that the molten rock known as lava was an underground remnant of Earth's earliest days, sporadically erupting through volcanoes, but they now know that it is continuously created by the heat of the radioactivity deep inside the planet.
A) was an underground remnant of Earth's earliest days, sporadically erupting
B) had been an underground remnant of Earth's earliest days and sporadically erupted
C) was an underground remnant of Earth's earliest days, which sporadically erupted
D) would be an underground remnant of Earth's earliest days that sporadically erupted
E) was an underground remnant of Earth's earliest days, having sporadically erupted
答案选A
请问: 1、我以为A里面的erupting是修饰前面句子的主语Geologists ,这个选项是错的。答案里面说是修饰前面整个句子,这个怎么判断? 2、C选项里的which的指代,which是只能指代其前面紧邻的名词么?不能指代 "X of Y"结构里面的X?