Titan is believed to be the only body in _____ solar system other than the Earth with liquid on ______ surface.

A．the; /

B．/; the

C．/; /

D．the; the

25岁女性，人工流产后闭经1年，经基础体温测定呈双相型体温曲线，雌孕激素试验无出血，下列正确的是

A．病变在丘脑下部

B．病变在垂体前叶

C．病变在子宫内膜

D．病变在卵巢

E．病变在甲状腺