It was once believed ________ and thus we can tell how successful he／she will be in the
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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！
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正确答案：正确D
空格处需要真正的主语(It是形式主语)，因此根据语法结构判断D是答案。该句大意是“人们曾经一度相信，智力是一个孩子天生所具有的。因为我们可以根据他／她的智力水平判断他／她在将来是否会取得成功。”