卵巢皮样囊肿（）。

A.是最常见的卵巢良性肿瘤

B.有恶性程度的逆转倾向

C.血hCG升高

D.血CA125升高

E.具有男性化作用

Though I am improving in my study, I still have a long way to go _____some of my classmates.

A．to compare with

B．to compare to

C．compared with

D．comparing with