（）指以现有的市场为中心，向水平方向扩展事业域，又称水平多样化或专业多样化。
A.水平一体化
B.横向多样化
C.多向多样化
D.纵向多样化
参考答案：B
Alice has gone to the classroom and she didn’t say ________.
A．when did she come back
B．when would she be back
C．when she came back
D．when she would be back
胃癌的好发部位（）
A.胃窦部
B.胃小弯侧
C.胃底部
D.胃体部
E.贲门区
