慢性肺心病的心电图改变应除外（）

A.顺钟向转位

B.低电压

C.V₁、V₂、V₃出现QS

D.RV5+SVl≥2.5mV

E.右束支阻滞

But it is evidently bored and frustrated（）company.

A.speaking of

B.for lack of

C.in honor of

D.in the presence of