问题
选择题
| My cousin went to Canada two yours ago. He _____ there for a few months and then went to America. |
| A. worked B. would work C. would be working D. has been working |
答案
答案：A
搜题请搜索小程序“爱下问搜题”
| My cousin went to Canada two yours ago. He _____ there for a few months and then went to America. |
| A. worked B. would work C. would be working D. has been working |
答案：A
SO3+NO后，若往容器中通入少量氧气时，将会发生的变化是（）。