人体由八大系统组成，有些器官属于甲系统，也属于乙系统；而有些器官则只属于甲系统而不属于乙系统．据此判断，下列哪种器官不同于其他三种器官？_刷题宝

题干

人体由八大系统组成，有些器官属于甲系统，也属于乙系统；而有些器官则只属于甲系统而不属于乙系统．据此判断，下列哪种器官不同于其他三种器官？（）

A：睾丸

B：胰腺

C：肾上腺

D：咽

上一题下一题 0.0难度选择题更新时间:2015-09-22 06:44:56

答案(点此获取答案解析）

C

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为探究原电池的形成条件和反应原理，某同学设计了如下实验并记录了现象：
①向一定浓度的稀硫酸中插入锌片，看到有气泡生成；
②向上述稀硫酸中插入铜片，没有看到有气泡生成；
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阅读理解

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