-- Is the Nanjing Bridge open to the public yet?

---Yes. It ____ for almost one and a half months .

A．has opened

B．has being opened

C．has been open

D．was open

判断脱水性质的临床表现哪项是不正确的：（）

A.等渗性脱水常为轻中度脱水表现

B.高渗性脱水出现口渴早且严重

C.低渗性脱水，易出现血容量不足症状

D.高渗性脱水，脱水症不明显

E.低渗性脱水，皮肤粘膜极干燥