During the class, Tom slipped out of the classroom ____the back door so as not to be found by the

teacher.[ ]

A. across

B. in

C. by

D. beside

小承气汤化裁厚朴三物汤属于（）

A.药量增减变化

B.药味增减变化

C.剂型更换变化

D.君药的加减变化

E.药味加减与药量变化相结台