I have to clean up the room,then I’ll come shopping with you.

A．Firstly

B．At first

C．To start with

D．First (of all)

女性，24岁因左腰部持续隐痛行检查，B超示左附件处囊状肿物。行左侧卵巢切除术。大体见卵巢切面多个囊腔，直径2～3.5cm，囊壁极薄，腔内面光滑，内含清亮液。镜下如图所见滤泡增大为囊状，粒细胞层增多达3层以上。应考虑为()

A．囊状滤泡

B．滤泡囊肿

C．黄体囊肿

D．卵泡膜囊肿

E．粒层黄素囊肿