—Shanghai is the biggest city in China.

—Yes, it is         than any other         in our country.[ ]

A. bigger, city

B. biggest, cities

C. bigger, cities

D. biggest, city

围手术期糖尿病性昏迷时，最重要的电解质紊乱是（）

A.低钠血症

B.高钠血症

C.低钾血症

D.高钾血症

E.高钙血症