系统实施阶段任务复杂，风险程度高。人们总结出系统实施的4个关键因素，其中不包括（）。
A．软件编制
B．进度安排
C．人员组织
D．任务分解
参考答案：A
. --Were you late for the film?
--Very late. Half of it ________ by the time we ________ the cinema.
A．was shown; reached
B．had been shown; reached
C．was shown; had reached
D．had been shown; had reached
下面是某公司四种产品的销售额与利润，试作复式条形图。
