生理性购买动机包括（）
A.生存性购买动机
B.习惯性购买动机
C.享受性购买动机
D.发展性购买动机
E.情感性购买动机
参考答案：A, C, D
— I'm sure my elder sister _____ weight recently.
— I can't agree more. She _____ too much. [ ]
A. has gained; is eating
B. lost; doesn't eat
C. is gaining; is eating
D. is gaining; eats
与CT相比，MRI有哪些优点
A．多参数成像
B．无碘过敏危险
C．软组织分辨率高
D．多方位成像
E．无禁忌证
