参考答案

正确答案：A
解析：细节题。最后一段的第三句提到“And foreigners are often appalled at the behavior. of children，who commonly are disruptive in public and feel free to speak to their parents in a manner unheard of in many cultures．”原句中的disruptive意为“捣乱的”，用英文改述即make troubles (制造麻烦，捣乱)。所以应该选A。