SORU: konuşmayı en iyi tamamlayan ifadeyi bulunuz
Teacher:
- When we look at the periodic table, we can see
that there are 120 or so known elements.
Student:
- Are they all naturally occurring?
Teacher:
- There are 92 naturally occurring ones.
Student:
- ----
Teacher:
- Well, there are others that have been created in
labs.