2017 Jiangsu Question 49 Single-choice Differentiating 2017_江苏卷 (英语) 60.Embryonic learning helps mother birds to identify the baby birds which C . A. can receive quality signalsB. are in need of trainingC. fit the environment betterD. make the loudest call. Answer keyC ☆ SaveCan't do it, show the explanation查看原卷 →