单项选择题
A.very short B.about 1.5 hours at a time C.about 12 days D.a day long
A.2,000,000 B.200,000 C.400,000 D.2,000, 000,000
A.telling people to stop using power B.loaning the utilities money to buy power C.buying power and reselling it at low prices to the utilities D.buying the utilities