nuclearextendedhomosexualspecific genderdistantsocial genderblendedbiologicaldivorcedsingle-parentadoptedgenetically[音频]3.3. A 1family consists of a couple of the same biological sex or 2 , and they might have adopted children.
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nuclearextendedhomosexualspecific genderdistantsocial genderblendedbiologicaldivorcedsingle-parentadoptedgenetically[音频]4.1families are families with children under age 18 headed by a parent who is widowed or 2and not remarried, or by a parent who has never married.
nuclearextendedhomosexualspecific genderdistantsocial genderblendedbiologicaldivorcedsingle-parentadoptedgenetically[音频]5. A stepfamily or1family is a family where one parent has children from a previous relationship that are not2 related to the other parent.
活动铰支座的约束力方向是确定的,垂直于支承面指向铰链
A. 对
B. 错