第3题: [单项选择]Questions 29 to 31 are based on the passage you have just heard. A. By forcing them farming. B. By affecting the quality of soils. C. By adding chemicals and polluting the waterways. D. By affecting the environments they live in. 参考答案:D 答案解析:[听力原文] According to this passage, why can the farming activities affect the animals [答案解析] 推理
第11题: [单项选择]Excel 2007启动后默认的工作簿名称为______。 A. 工作表1 B. Bookl.xls C. Sheet1 D. 文档案.xls 参考答案:B 答案解析:Excel用于保存表格内容的文件被称为工作簿,一个Excel文件就是一个工作簿,其默认的名称为BookX(X为1,2,3,…n),工作簿的扩展名一般为.xlsx,因此在Excel 2007启动后默认的