We don't have much homework now and our school bags are ______ they used to be. [ ]

A. as heavy as

B. not as heavy as

C. as heavily as

D. not as heavily as

女性，34岁，已婚，结婚5年未孕，伴痛经来就诊。妇科检查：宫颈轻度糜烂，子宫后位，正常大小，子宫骶骨韧带处有触痛结节，左侧附件扪及直径约6cm大小囊性包块，右侧附件扪及直径约5cm大小囊性包块，均粘连固定。

经治疗1年后症状消失，但仍未妊娠，基础体温呈单相型。宜选择何种治疗（）

A.雌激素、孕激素周期疗法

B.黄体酮治疗

C.氯米芬治疗

D.氯米芬及少量雌激素治疗

E.肾上腺皮质激素治疗