— How much of the foreign expert's speech have you understood?

— Next to nothing. I wish I _____ harder at English.[ ]

A. worked

B. had worked

C. would work

D. were working

为预防子宫脱垂的发生，下列健康指导不正确的是（）

A.产后尽早参加体力活动，以增强盆底组织

B.坚持缩肛运动，增强盆底组织弹性

C.加强营养，增强体质

D.积极开展计划生育

E.积极治疗慢性咳嗽等增加腹压的疾病