TOEFL Listening: ETS-TOEFL听力机经 - 4MMQ96S3Y96S4428P$

What did scientists learn about the trocto? A. It is the youngest Moon rock collected to date. B. It had been in a magnetic environment for millions of years. C. It was probably not formed through the solidification of molten iron. D. It was most likely magnetized by an impact with a large object.