Making "Earth Day 2009" with his plan for ( )energy.President Barack Obama on Wednesday called for energy exploration.
A.alternative B.traditional C.available D.inexpensive
题意不理解啊,希望高手指点一下
Making "Earth Day 2009" with his plan for ( )energy.President Barack Obama on Wednesday called for energy exploration.
A.alternative B.traditional C.available D.inexpensive
题意不理解啊,希望高手指点一下
A alternative 可替代的