The case of identical twins from Germany shows that _____.
A、environment can help determine people’s body shape
B、genes are the decisive factors for people’s body shape
C、identical twins are likely to enjoy different sports
D、identical twins may have different genes for different sports
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试题解析
第二段第二句,Rennie引用了德国一对单卵双胞胎的例子,其中一个是长跑运动员,另一个是力量型运动员。“虽然他们是双胞胎,但看上去完全不同。”