垂体在解剖上分为前叶和后叶,垂体腺瘤是指来源于________的肿瘤。按肿瘤大小,垂体瘤分为________和_____________。
参考答案:垂体前叶细胞;微腺瘤;大腺瘤
The door is not ________ for the elephant to pass.[ ]
A. wide enough
B. widely enough
C. enough wide
D. enough widely
可撤销婚姻