鰟鲏鱼类的输卵管突出于体外，延长为产卵管，此特征为主性征。
参考答案：对
It is _______ it was yesterday.
A．as beautiful day as
B．as a beautiful day as
C．as beautiful a day as
D．beautiful as a day as
对于子宫内膜癌，下列哪项恰当？（）
A.宫腔冲洗液查癌细胞是最有效的诊断方法
B.40～50岁妇女居多
C. * * 排液早期为浆液性或浆液血性
D.单纯放射治疗效佳
E.晚期用大剂量雌激素治疗有效
