If you had lived in the Middle Ages，you ________the chance to appreciate the art works of Leonardo da Vinci.

A．won’t have had

B．wouldn’t have

C．wouldn’t have had

D．mustn’t have had

下列有关急性疼痛叙述错误的是（）

A.急性疼痛分为躯体痛、内脏痛和神经病理性疼痛

B.躯体性疼痛和内脏疼痛与明确的损伤和疾病有关

C.神经病理性疼痛有明确的损伤史，但无损伤区可出现疼痛

D.疼痛伴随感觉缺失，阵发或自发性疼痛

E.阿片治疗效果佳