西安事变发生后，中 * * 党派到西安调停的是[ ]
A、
B、
C、
D、
答案：C
— ______________ is his grandfather?
— Fine. Look! He's doing taijiquan. [ ]
A. How
B. How much
C. How many
急性呼吸性酸中毒（）
A.pH7.35，PCO265mmHg，BE+8
B.pH7.20，PCO225mmHg，BE-10
C.pH7.50，PCO245mmHg，BE+8
D.pH7.40，PCO240mmHg，BE-2
E.pH7.25，PCO270mmHg，BE+3
