— Do you have any idea what Paul does all day?

— As I know, he spends at least as much time playing as he _____. [ ]

A. writes

B. does writing

C. is writing

D. does write

女，58岁，近半年来自觉心前区阵发性疼痛,常在休息或清晨时发作，持续时间15分钟，含服硝酸甘油后缓解，疼痛发作时，心电图胸前导联ST段抬高，运动负荷试验阴性，其诊断为（）。

A．初发型心绞痛

B．卧位型心绞痛

C．稳定型心绞痛

D．变异型心绞痛

E．恶化型心绞痛