托马斯-切斯将婴幼儿的气质划分为三种类型，其中占全体婴幼儿40%的类型是（ ）
困难型
容易型
中间型
延缓型
Choose the closest paraphrased version after the following sentence or the italicized part.
Meeting after a long interval, friends are like a couple who began to dance again when the orchestra strikes up after a pause.（）
