使生产水平或经营活动水平达到前所未有的水平属于（）。
A.突破性目标
B.控制性目标
C.水平目标
D.专业目标
参考答案：A
It’s reported that the United States uses______ energy as the whole of Europe.
A．as twice
B．twice much
C．twice much as
D．twice as much
需求预测
