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参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Our brains could be hard-wired to be male or female long before we begin to grow testes(丸)or ovaries(卵巢)in the womb. This discovery might explain why some people feel trapped in a body that’s the wron...
A.
continue to study the influence of genes on human brain sexuality
B.
look for more dominant genes for males as well as for females
C.
continue their study about genes on mice
D.
show that there are differences in expression of genes of males and females
【单选题】甲状腺滤泡旁细胞（又称C细胞）分泌的降钙素的作用是
A.
促进细胞内的氧化作用
B.
维持糖、蛋白、脂肪正常的代谢
C.
促进机体的正常生长发育
D.
保持机体各系统、器官的生理功能
E.
抑制骨的吸收