（）指的是由个元素组成的系统所产生的效应大于由各元素简单相加所产生的效应。
参考答案：整体性
补充对话。
1. — Can a cow walk?
— Yes, ____________ can.
— What else can walk?
— A ____________ can walk. A ____________ can walk.
2. — Can a bird fly?
— ____________, ____________ ____________.
— What else can fly?
— A ____________ can fly. A ____________ can fly.
3. — Can a rabbit write?
— No, ____________ ____________.
— What can write?
— A ____________ can write. A ____________ can write.
4. — Can a chair run?
— What can run?
— A ____________ can run. A ____________ can run.
心绞痛最可能加重变异型心绞痛的药物是（）。
A.β阻滞剂
B.钙通道阻滞剂
C.硝酸酯类药物
D.抗血小板药物
E.调酯药物
