脐带脱垂时，脐带还纳术的条件有（）

A.宫口全开

B.宫口未全开

C.胎心好

D.头先露

E.无剖宫产条件或家属及产妇不同意剖宫产者

It _______ that she has lost interest in studying English.

A．seemed

B．appears

C．looks

D．remains