. Many composers, directors and procucers are ______ that the erhu, a Chinese musical instrument, can make their films more colorful.

A．aware

B．anxious

C．cautious

D．modest

患者，女，23岁。痛经9年，经行不畅，小腹胀痛，拒按，经色紫红，夹有血块，血块下后痛即缓解，脉沉涩。治疗应首选（）

A.足三里、太冲、三阴交

B.中极、次髎、地机

C.合谷、三阴交

D.曲池、内庭

E.合谷、归来