问题
选择题
Tom has to go to school on foot every day, _____? [ ]
A. isn't he
B. weren't he
C. doesn't she
D. doesn't he
答案
答案：D
搜题请搜索小程序“爱下问搜题”
Tom has to go to school on foot every day, _____? [ ]
A. isn't he
B. weren't he
C. doesn't she
D. doesn't he
答案：D
（2分）（2008•北京）为比较4种金属X、Y、Z、W的金属活动性，小刚进行了一系列实验，结果如表所示．其中能反应的记为“√”，不能反应的记为“﹣”，无标记的表示未做该实验．则它们的金属活动性顺序为（ ）
| 参加反应的物质 | X | Y | Z | W |
| W（NO3）2 | ﹣ | √ | ﹣ | |
| ZNO3溶液 | √ | √ | √ | |
| 稀盐酸 | ﹣ | √ | ﹣ | √ |