问题
选择题
| Burning of gas, oil and coal can cause ______ pollution. |
A. air B. water C. light D. noise |
答案
答案：A
搜题请搜索小程序“爱下问搜题”
| Burning of gas, oil and coal can cause ______ pollution. |
A. air B. water C. light D. noise |
答案：A
