有关输液的质量要求不正确的是
A. 无茵、无热原
B. 澄明度应符合要求
C. 等渗或低渗
D. pH在4~9范围
E. 不得添加任何抑茵剂
I'm very sorry ______ the whole morning. I forgot the appointment.
A. to keep you wait
B. to have kept you waiting
C. to keep you waiting
D. to keep you to wait
I ______ everything by the time you get back next month.
A. shall finish
B. will be finishing
C. have finished
D. shall have finished
I'm very ______ to you for your help.
A. grateful
B. agreeable
C. pleased
D. satisfied