GMAT 考满分题库

- 语法SC -
Astronomers at the Palomar Observatory have discovered a distant supernova explosion, one that they believe is a type previously unknown to science.
显示答案
正确答案: E

讨论题目 或 发起提问

|

题目讨论

  • 按热度
  • 按顺序

最新提问