Student or Learner
I'm very sorry if this is in the wrong section but can't find any place more suitable
Anyway, one of my friends got an ielts reading practice from a teacher. It was about some UK(?) scientists inventing some chemical that can speed up the Diels–Alder reaction. It consists of 7 paragraphs and the first assignment is find the right heading for each paragraph. Can anyone tell me what book is it from?