工程项目总控的核心是( )。
A．进度控制B．质量控制C．费用控制D．合同控制
参考答案：D
In ancient times, people rarely travelled long distances and most farmers only travelled ________
the local market. [ ]
A. longer than
B. more than
C. as much as
D. as far as
氧化铝(约450℃煅烧氢氧化铝制得)
