Observe that for the programmer, as for the chef, the urgency of the patron（顾客）may govern the scheduled completion of the task, but it cannot govern the actual completion. An omelette（煎鸡蛋），promised in two minutes, may appear to be progressing nicely. But when it has not set in two minutes, the customer has two choices-waits or eats it raw. Software customers have had __(1)__ choices. Now I do not think software __(2)__ have less inherent courage and firmness than chefs,nor than other engineering managers. But false __(3)__to match the patron's desired date is much more common in our discipline than elsewhere in engineering. It is very __(4)__ to make a vigorous, plausible, and job risking defense of an estimate that is derived by no quantitative method, supported by little data, and certified chiefly by the hunches of the managers. Clearly two solutions are needed. We need to develop and publicize productivity figures,bug-incidence figures, estimating rules, and so on. The whole profession can only profit from__(5)__such data. Until estimating is on a sounder basis, individual managers will need to stiffen their backbones and defend their estimates with the assurance that their poor hunches are better than wish derived estimates.

空白（5）处应选择（）

A.sharing 

B.excluding 

C.omitting 

D.ignoring

甲公司为制造大型机械设备的企业，20×5年与乙公司签订了一项总金额为6500万元的固定造价合同。合同约定，甲公司为乙公司建造某大型专用机械设备，合同期3年。合同完工进度按照累计实际发生的合同成本占合同预计总成本的比例确定。假定所发生的成本 50%为原材料、30%为人工成本、另20%以银行存款支付。
该项工程已于20×5年3月1日开工，预计于20×7年10月底完工。预计工程总成本为 6100万元。其他有关资料如下：
成本、结算价款等明细表单位：万元