题目内容：
It was once believed _______，and thus we can tell how successful he／she will be in the future according to his／her intelligence．
A．born to be more intelligent or less intelligent B．have a better chance to develop his intelligence
C．can't be observed and measured
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
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答案解析：