46It was once believed ________， and thus we can tell how successful he/she will be in the 6789

It was once believed ________， and thus we can tell how successful he/she will be in the future according to his/her intelligence. 查看材料 A.born to be more intelligent or less intelligent B.have a better chance to develop his intelligence C.taught to be more intelligent D.that intelligence was something， a baby was born with E.and because of the lack of communication with his classmates F.and partly has to do with a child"s living environment 请帮忙给出正确答案和分析，谢谢！