In mountain areas, shallow coal seams are opened up for adits.When there are more reserves below the level of the pit, the deep penetration of the is usually used.
举一反三
- The villagers, ______ were very happy when they saw the film for the first time. A: in the mountain depths B: in the mountain deeply C: in the depths of the mountain D: in the mountain deep
- 英语的“肤浅”是___________________ A: shallow skin B: skin shallow C: deep skin D: skin deep
- By success, I don’t mean ___ usually thought of when that word is used.
- Rail transport uses different types of wagons for different goods, usually are used for move coal and aggregates.
- The issue has deep divisions within the party. （ ） A: posed B: inhaled C: involved D: opened up