第16题: [单项选择]多动性障碍的基本特征有 A. 注意缺陷 B. 活动过多 C. 行为冲动 D. 可伴有学习困难、品行问题 E. 以上都对 参考答案:E 答案解析:多动性障碍的基本特征有:注意缺陷,活动过多,行为的冲动性,可伴有学习困难、品行问题、情绪异常,有些还会触犯法律,智力可以正常或接近正常。正确答案为E。
第33题: [单项选择]Paul Samuelson revolutionized ______ by presenting his students with the most advanced economic thinking at an introductory level. A. to teach economics B. teaching that economics is C. the teaching of economics D. economics is taught 参考答案:C