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【多选题】
关于托马斯·查德和戴维·莱肯的双生子研究，下列描述错误的是？A.
实验结果支持了环境决定论
B.
实验结果表明智力主要是由后天因素决定
C.
同卵双胞胎拥有几乎相同的遗传结构
D.
共同养育和分开养育的同卵双胞胎没有在大部分实验指标上表现出显著差异
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