—We will go to the Wushan Square this afternoon, why not take a bus?

—We ________ take a bus , it’s only one kilometer or more.

A．can’t

B．needn’t

C．mustn’t

D．may not

不含肌上皮细胞的肿瘤为（）。

A.多形性腺瘤

B.腺淋巴瘤

C.腺样囊性癌

D.肌上皮瘤

E.黏液表皮样癌