The computer was used in teaching. As a result，not only _____，but students became more interested in the lessons.

A．saved was teachers’ energy

B．was teachers’ energy saved

C．teachers’ energy was saved

D．was saved teachers’ energy

患者女性，33岁。劳累后心悸气促7年，检查：二尖瓣面容，第一心音亢进，心尖部可闻及Ⅲ级隆隆样舒张期杂音，有开瓣音，P₂>A₂，心律规则，本次因为气促不能平卧伴咯血入院。其治疗措施是（）

A.吸氧

B.西地兰静脉注射

C.镇咳剂

D.速尿静脉注射

E.止血剂