To add selenium by taking pills are probably not effective because ______.
A.the human body is not in the right chemical form
B.the human body does not accept it
C.the selenium is, not in the right chemical form. to be absorbed
D.the selenium is difficult to absorb
为了保护您的账号安全,请在“上学吧”公众号进行验证,点击“官网服务”-“账号验证”后输入验证码“”完成验证,验证成功后方可继续查看答案!