【简答题】Listen to the above song, “Solar Energy,” sung by Ron Brown. Learn to sing it and fill in the missing words in the following lyrics. Oh, the sun is a star. It's our closest 1 . It's just 93 million mi...
【简答题】_______, the 1900s was the century of energy conflict.Now, the____ of a new energy era is just_______— with the prices of solar power_____, anddistributedgeneration and energyefficiency_____ taking of...