But most ____(使人惊讶地), the Minnesota team finds that genes play a big part in shaping our personalities-helping to determine whether we respect tradition and like to follow rules, for example, or whether we're dedicated nonconformists.
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What's more, for every coincidence discovered by a pair of identical twins raised apart, a skeptic could point to a vast number of ____(未被发现的) differences.
But the differences would go ____(未经报道的) since they would not surprise anyone.
Both drove the same model blue Chevrolet, liked ____(木工手艺), chewed their fingernails, and owned dogs named Toy. Both started having late-afternoon headaches at the age of 18.
一对渐开线直齿圆柱齿轮的啮合线相切于______。
A. 两分度圆
B.两基圆
C. 两齿根圆
D. 两齿顶圆