第24题: [单项选择]Some psychologists argue that the traditional idea "spare the rod and spoil the child" is not rational. A. helpful B. kind C. sensible D. effective 参考答案:C 答案解析:helpful有用的、有益的;kind善良的;sensible明智的;effective有效的。因为rational意为“理智的”,与sensible近义,故选C项。