It is reported that the United States uses _______ energy as the whole of Europe.  [ ]

A. as twice

B. twice much

C. as twice much

D. twice as much

教育目的的对整个教育工作具有导向作用、激励作用和（ ）

A．评价作用

B．选拔作用

C．决定作用

D．主导作用