Selecting a mobile phone for personal use is no easy task because technology ____ so rapidly.

A．will change

B．has changed

C．will have changed

D．is changing

关于慢性胆囊炎的临床特点，错误的是（）.

A.由急性演变而来或起病即是慢性过程，多合并有胆囊结石

B.可形成萎缩性胆囊炎

C.反复的右上腹或上腹隐痛、腹胀、嗳气，脂餐可诱发胆绞痛

D.B超或胃镜检查有助诊断和鉴别诊断

E.多采取碎石或中医排石治疗