Staying in a hotel in Shanghai one day costs ____ renting a house in my hometown for a week.

A．the three times price of

B．three times the price of

C．as much as three times

D．as much three times as

女性，40岁。幽门梗阻致反复呕吐15d入院，呼吸浅慢，血压12.0/9.3kPa（90/70mmHg）。实验室检查：血清钾3mmol/L、钠130mmol/L，pH7.5，血浆HCO^-₃35mmol/L。

该病人典型EKG早期改变是（）

A.T波降低，Q-T间期延长

B.QRS波增宽

C.P-R间期延长

D.U波

E.T波降低、变平或倒置