按瘤细胞所含激素种类进行功能一形态分类,垂体腺瘤中最常见的是()。
A.GH细胞腺瘤
B.PRL细胞腺瘤
C.ACTH细胞腺瘤
D.TSH细胞腺瘤
E.GTH细胞腺瘤
参考答案:B
A.它的分子式为C6H8O6
B.易起氧化及加成反应
C.它是一种水溶性维生素
D.在碱性溶液中能稳定地存在
I ______ my university professor in the supermarket near my house, which was out of my expectation.
A.came out
B.came across
C.came about
D.came along