把x=-6代入，得
4-2x=4-2×(-6)=16=4．
故答案是：4．
As we all know, we are what we eat. ________, it’s very important for us to form healthy eating habits. _________, bad eating habits are still very common among us students. _______ the fact that bad eating habits will do harm to our health, we students never take it seriously.
A. Nevertheless B. Therefore C. Though D. Thus
A. Otherwise B. Despite C. However D. Afterwards
投资估算的精确度和工程造价的控制水平依赖于( )对项目的理解深度投资决策过程。
A．项目决策阶段 B．项目设计阶段C．项目建议书 D．可行性研究报告
