7、Obama said. “This time has to be differently. This time we cannot fail, so can we be happy simply because the price at the pump has gone down from.” Obama's choices was welcomed by environmentalists whose said they showed he was serious about fighting global warming and about moving toward more “green” jobs. Obama's energy and environment team will also be charging with developing policies to reduce carbon emissions. He said his nomination（提名） of Chu should send an signal his administration will “value science.”“ We will take decisions based on the facts, and we understand that facts demand brave action,” Obama added.