The old lady’s hand shook frequently. She explained to her doctor ________ this shaking had begun half a year before, and ________, only because of this, she had been forced to give up her job.

A．when; how

B．how; when

C．how; how

D．why; why

用于前列腺增生症的高选择性α₁A受体阻滞剂（）

A.索利那新

B.坦索罗辛

C.特拉唑嗪

D.托特罗定

E.奥昔布宁