___________it in the flesh, I would never have known the drought in southwest China is so serious and people are suffering so much.

A．Had I not seen

B．If I did not see

C．Should I not see

D．Were I not seen

某男，50岁，建筑公司工人，近1个月发现过度劳累时心前区疼痛，经医生给予做心电图检查确诊为心绞痛。患者吸烟多年、血脂增高、过量进食、喜饮浓茶。责任护士向患者进行健康教育的内容中不妥的是()。

A．应低盐、低脂饮食，不宜过饱

B．保持情绪稳定，不可过度劳累

C．戒烟、限酒，不饮浓茶

D．按医嘱服药，平日随身带硝酸甘油

E．心绞痛疼痛持续1小时以上为正常情况