【简答题】to release or loose from or as if from a leash u( )
【单选题】_____________ is the process of extracting coal from the ground.
B.
Burning of fossil energy sources
【单选题】In the United States, most of the electricity is generated from coal or natural gas.
【单选题】People have proved______to be true that the heat we get from coal and oil comes from the sun.
【多选题】你认为,领导者应具备以下哪些素质( )。
【简答题】To the coal mine came a company of PLA soldiers with orders from the headquarters to rescue the trapped miners.