下列哪种根类药材不含乳管
A.桔梗
B.天花粉
C.党参
D.南沙参
参考答案:B
–What do you think of your job, Bob?
–Though ____ flexibility, it is a job____ you are doing something serious but interesting.
A.lacking; where
B.lacking of; which
C.lacking in; when
D.lacking; that
同时发生两种旅行变更时,核收()次手续费。