在软件项目管理中可以使用各种图形工具来辅助决策。图1-2示意的是一张（）。
A.活动图
B.PERT图
C.Gantt图
D.因果分析图
参考答案：C
解析：
甘特图也称为横道图，是信息工程项目进度管理中最常用的方法之一。应用这种方法进行项目进度控制的思路是：首先编制项目进度计划，再按进度计划监督、检查工程实际进度，并在甘特图上作好记录，据此判断项目进度的实施情况，提出控制措施的完整过程。
甘特图以横坐标表示每项活动的起止时间，纵坐标表示各分项作业，按一定先后作业顺序、用带时间比例的水平横道线来表示对应项目或工序的持续时间，以此作为进度管理的图示。信息工程项目中已经广泛采用了甘特图法制定进度计划。
图1-2所示的甘特图表现了一个系统开发过程中各个活动(子任务)的时间安排，也反映了各个活动的持续时间和软件开发的进度，但是不能反映各个活动之间的依赖关系。活动之间依赖关系要用工程网络图(又称活动图)来表现。
In common with many countries, Britain has serious environmental problems. In 1952, more than 4,000 people died in London because of the smog (烟雾). The government introduced new laws to stop smog from coal fires and factories and the situation improved a lot. Today, London is much cleaner but there is a new problem: smog from cars. In December 1991, there was very little wind in London and pollution increased a lot. As a result, about 160 people died from pollution in just four days.
Part of the problem is the new “out of town” shopping centers. In the past, people often walked to shops near their home or went by bus. Many people drive to the new shopping centers now. As a result, the small shops have disappeared and more people have to travel to do their shopping.
Critics (批评家) say that Britain needs better and cheaper public transport (交通). Transport in Britain is very expensive. An early morning train trip from Glasgow to London (about 600km) can cost about ￡100, for example. A short 15-minute bus trip can cost over ￡1.00.
Many people are trying to reduce（减少）the use of cars in Britain. Some cities now have special bicycle paths (小道) and many people go to work by bike. Some people also travel to work together in one car to reduce the pollution and cost.
| Title：小题1:._____________in Britain | |||
| Time | Causes | Effects（结果） | Solutions |
| In the past | Smog from 小题2:. ______ and factories. | Over 4,000 people died in 1952. | Introduced 小题3:._______. |
| 小题4:.______ | Smog from cars. | About 160 people died in just four days in 1991. | ◆Provide 小题5:.______ public transport. ◆Build special paths for bicycles. ◆Work together in one car. |