A Harvard anthropologist has proposed that using fire to cook food could be dated back to almost two million years and that it could explain hominid features like having a large brain and small teeth.
A using fire to cook food could be dated back to almost two million years and that it could explain hominid features like having B the use of fire to cook food could date back almost two million years and could explain such hominid features as C cooking food with fire could date back to almost two million Years, explaining hominid features like D fire used to cook food could date back almost two million years ,explaining hominid features such as having. E fire used for cooking food could be dated back to almost two million years and explain hominid features like.
B the best
我对这题的疑问是, date back to 的用法,我觉得追溯到...,这里应该用be dated bake to
我的理解对吗? | 
