下列哪项不是β受体阻断药的适应证（）。
A.高血压
B.甲状腺功能亢进
C.窦性心动过速
D.心绞痛
E.支气管哮喘
参考答案：E
The company has a free long-distance telephone number _____ customers may call with any question
they have about its products.
[ ]
A. so that
B. although
C. even if
D. as though
人们对变化幅度较大的事物，比较敏感属于（）
A.选择性注意
B.选择性曲解
C.选择性记忆
D.选择性理解
