第21题: [单项选择]( )预警法侧重定量分析。 A. 黑色 B. 红色 C. 黄色 D. 蓝色 参考答案:D
第22题: [单项选择]{{B}}Passage One
Questions 26 to 28 are based on the conversation you have just heard.{{/B}} A. They perform better in school. B. They suffer fewer accidents. C. They are less likely to be too fat. D. They are free from serious disorders. 参考答案:D 答案解析:[听力原文]
Which of the following is NOT true of children who can get enough sleep
排除法。从文中可知睡眠充足的孩子
第30题: [单项选择]LES的各项是按影响程度分为( )级评分。 A. 2 B. 3 C. 4 D. 5 参考答案:D 答案解析:LES的各项影响程度分为5级,从毫无影响到影响极重分别记0、1、2、3、4分,即无影响=0分、轻度=1分、中度=2分、重度=3分、极重=4分。影响持续时间分三月内、半年内、一年内、一年以上共4个等级,