The discovery of the oilfield is of great _____ to the economy in this region.
举一反三
- The fast development of the local economy has a great _______________ on the environment in this region.
- South Region is the second most populous region of the country, next to Northeast Region.( )
- In every administrative region of Italy, there is a wine region.
- American cuisine varies greatly from region to region.
- The build-in electric field is from p region to n region.<br/>( )