第13题: [单项选择]Passage One
Questions 26 to 29 are based on the passage you have just heard. A. The shape of the cubes used. B. The size of the objects shown. C. The number of times of repeating the process. D. The weight of the boxes moving across the stage. 参考答案:B 答案解析:A scientific team is studying the thinking ability of eleven and half month old children. The test i
第22题: [单项选择]睡眠脑电图研究发现() A. 抑郁症患者总睡眠时间减少,觉醒次数减少 B. 快眼动睡眠(REM)潜伏期缩短,抑郁程度越重,REM潜伏期越长 C. 30%左右的心境障碍患者有脑电图(EEG)异常 D. 抑郁发作时多倾向于高α频率,而躁狂发作时多为低α频率或出现低幅慢波 E. 以上都不对 参考答案:C
第23题: [单项选择]动火点周围的可燃气体含量应小于()。 A. 0.60% B. 0.50% C. 0.70% D. 0.80% 参考答案:B