盐皮质激素的作用（）
A.使血钠升高
B.使血钾降低
C.两者均有
D.两者均无
E.降低血压
参考答案：C
Nanjing is a beautiful city and it _____ again. [ ]
A. is worth being visited
B. is worthy of visiting
C. is worthy to visit
D. is worthy of being visited
婴儿自我认识出现的阶段。
