______he felt tired,______he still went on working.    [ ]

A. Because; so          

B. Although; but    

C. /; so                

D. Though;/

治疗心悸失眠、健忘多梦、体虚多汗者，应选用的药物是（）

A.珍珠母

B.柏子仁

C.酸枣仁

D.朱砂

E.远志