肾衰的病人往往缺钙,这是因为肾不能产生()
A.肾素
B.血管紧张素
C.醛固酮
D.活性维生素D3
参考答案:D
用所给词的适当形式填空。
1. I see my mother TV. (watch)
2. Let's basketball after school. (play)
3. We English now. (have)
4. They read books under the tree. (quiet)
5. There are many in the shop. (woman)
基本养老金实行由()直接发放或者委托银行等部门代为发放。