Everyone sometimes needs to feel good about ________.[ ]

A．him                    

B．he

C．himself                  

D．his

典型心绞痛发作的疼痛性质是

A．心前区一过性刺痛

B．胸骨后疼痛持续性加重15～20分钟

C．劳力时胸骨后压榨样疼痛，休息后3分钟内缓解

D．上腹部疼痛，含化硝酸甘油1分钟后消失

E．情绪激动时心尖部不适，卧床休息逐渐减轻