《招标投标法》明确规定，投标人应当按照( )的要求编制投标文件。
A．资格预审文件
B．合同文件
C．招标文件
D．实质性条款
参考答案：C
_____ he was very tired, he continued working in his office.
A．Since
B．Although
C．As soon as
D．Because
试述“科技兴贸”战略的内涵及其主要内容。
