单选题 Listen to Track 26.
  • A. It is likely that the current age estimates for the South Pole-Aitken Basin are based on incorrect assumptions.
  • B. It is disappointing how little the technology to analyze Moon rocks has advanced since the days of the Moon landings.
  • C. Too few of the original Moon-rock samples were dated accurately.
  • D. It is important to obtain a more precise determination of the Moon's age.
【正确答案】 D
【答案解析】[解析]
Narrator
Listen again to part of the lecture. Then answer the question.
Female student
But if we know around how old the Basin is, I'm not sure that's reason enough to go to the Moon again.
Professor
Oh, but such crude estimates...
Narrator
What does the professor imply when he says this:
Professor
Oh, but such crude estimates...