—Few pupils are as bright as he is, and he works very hard, too.

—It is no          that he always gets the first place.

A．problem

B．evidence

C．wonder

D．doubt

女性，32岁，因反复外阴瘙痒、白带异味就诊。超声检查如图，应诊断为（）

A.子宫内膜癌

B.宫颈囊肿

C.子宫肌瘤

D.宫腔残留

E.宫颈炎