代谢性酸中毒的基本特征是血浆__________浓度原发性减少,血浆SB、AB、BB均_________,BE负值_________。
参考答案:HCO3-|降低|增大
单项选择。
Four seasons ______ a year. [ ]
A.make
B.makes
C.has
D.have
Mr. Chen, ____ his lady, has a good command of the English language.
A.as well as
B.and
C.but
D.as well