18.3 came from (past tense)
18.3.1 Ethan and Valentina are talking about history.
Ethan: Was paper invented in Europe?
Valentina: I don’t think so. I think it came from China originally.
Ethan: When?
Valentina: Oh… I don’t know. Maybe a couple of thousand years ago?
Ethan: Wow. Really?
18.3.2 Hassan is learning about physics with his teacher.
Teacher: Our current understanding of the universe came from Einstein’s
theory of general relativity.
Hassan: I’ve heard of that. What did Einstein say?
Teacher: His theory says that space isn’t flat. Space is curved.
Hassan: Wow. That’s difficult to imagine.
Do'stlaringiz bilan baham: |