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The explanation of tornado formation according to which tornadoes form during a twisting clash of air masses is clearly(i)________: such clashes occur very frequently both in the United States and in countries where tornadoes are(ii) ________.
- Blank(i)
- oversimplified
- untestable
- promising
- Blank(ii)
- less intensively studied
- virtually unknown
- harder to predict
oversimplified , virtually unknown 显示答案
以上解析由 考满分老师提供。