求教大全一题

1.        
American productivity is declining in relation to
Europe’s; the energy expended per unit of production in the United States is as
much as twice that expended in West Germany.

(A) as much as twice
that expended in West Germany

(B) as much as twice
that of West Germany’s expenditure

(C) up to two times
of West Germany’s expenditure

(D) up to two times
what West Germans expended（A）