贝美格单次静脉注射时的剂量是（）
A.50mg
B.55mg
C.60mg
D.65mg
E.70mg
参考答案：A
—Steven! How about my flowers? Be sure to take good care of them.
—Sorry, Mom. I forgot _____ them. [ ]
A. cleaning
B. to cut
C. feeding
D. to water
引导式教育
