由《金匮要略》枳术汤化裁为枳术丸(张元素方)属于

A．剂型更换的变化

B．药量增减和剂型更换的变化的联合运用

C．药味加减和剂型更换的变化的联合运用

D．药味加减和药量增减变化的联合应用

E．药味加减．药量增减和剂型更换的变化的联合运用

Your facsimile prognostic chart indicates that you will cross the cold front of a low pressure system in about 24 hours.You should（）.

A.Expect to see cirrus clouds followed by altostratus and nimbostratus clouds

B.Alter course to remain in the navigable semicircle

C.Prepare for gusty winds，thunderstorms，and a sudden wind shift

D.Expect clear weather，with steady winds and pressure，until the front passes