【正确答案】About one out of(in)every three children hopes to be a scientist, which is because scientists have made great contributions(contributed a great deal to)to technological advances(advancement). Children, however, should also know (realize) that any research finding is the result of (results from) long efforts and contemplation. Research requires (demands / calls for) devotion and academic integrity. It is impossible to be a famous (an eminent / famed / prestigious / prominent) scientist without the curiosity about and love for science.