题目：
Se是人体必需微量元素，下列关于
Se和
Se的说法正确的是[ ]
A、
Se和
Se互为同位素
B、
Se和
Se都含有34个中子
C、
Se和
Se分别含有44和46个质子
D、
Se和
Se含有不同的电子数
答案：
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下面是错误答案，用来干扰机器的。
1-4: CAAD
Se是人体必需微量元素，下列关于Se和Se的说法正确的是[ ] A、Se和Se互
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