第7题: [单项选择]Passage One Questions 26 to 29 are based on the passage you have just heard. A. To improve their health. B. To earn people’s admiration. C. To gain power and influence. D. To make the countryside safe. 参考答案:B 答案解析:[听力原文] What is the main purpose of modern hunters’ killing
第21题: [单项选择]配对设计的两组计量资料样本均数差别的检验 A. 只能用配对t检验 B. 只能用配伍组方差分析 C. 配对t检验与配伍组方差分析的结果一致 D. 只能用成组t检验 E. 只能用单因素方差分析 参考答案:C 答案解析:解析:因为配对"检验只是配伍组方差分析的特殊情况。若配伍组设计中只有2种处理,则配伍组方差分析就将化为配对t检验。
第30题: [单项选择]The whether ______ fine, Jane went out with her family to the park. A. was B. were C. is D. being 参考答案:D 答案解析:题意为:天气不错,Jane和家人一起去了公园。
此题考查独立主格结构。完整的句型是:Since the weather was fine,Jane went out with her fami
第34题: [单项选择]毛毛骑在牛背上过河,他共有甲、乙、丙、丁4头牛,甲过河要20分钟,乙过河要30分钟,丙过河要40分钟,丁过河要50分钟。毛毛每次只能赶2头牛过河,要把4头牛都赶到对岸去,最少要多少分钟 A. 190 B. 170 C. 180 D. 160 参考答案:D 答案解析:[解析] 毛毛骑过河用时最短的甲牛赶其他牛过河,首先赶乙牛过河需要30分钟,骑甲牛返回对岸需要20分钟;再赶丙牛过河需要40分钟,骑甲牛返回对岸又需要20分钟;最后赶丁牛过河需要50分钟。此时所有的牛