Difficulties are nothing _____we are not afraid of them.

A．for

B．as

C．if

D．whether

治疗冠心病心绞痛气阴两虚证，可采用的是

A．血府逐瘀汤与硝酸酯制剂、β受体阻滞药、钙离子拮抗药

B．补阳还五汤与硝酸酯制剂、β受体阻滞药、利尿药

C．枳实薤白桂枝汤合当归四逆汤与硝酸酯制剂、ACEI药、钙离子拮抗药

D．生脉散合炙甘草汤与硝酸酯制剂、β受体阻滞药、钙通道阻滞药

E．当归四逆汤合苏合香丸与利尿药、硝酸酯制剂、β受体阻滞药