[解析]
(1)C 细节题.根据后文And you need to plan for success as planning really works and inspires you to go straight ahead.可知,因为计划真的有作用,激励你往前所以得知人们如果按照计划更有可能成功,故选C.
(2)A 概括题.通过第一句话What plans have you had in the past?你过去的计划是什么?建议我们要回顾过去的计划,故选A.
(3)G 细节题.根据前句Because not everything just goes smoothly as you believe可知,不是一切都按照你想的进行顺利,所以你需要制定计划A/B以防偶发事件,故选G.
(4)E 细节题.根据When starting to make plans,you should try to write them down在开始制定计划时,应该写下来,因为不是所有人都能记得说过的,故选E.
(5)D 细节题.根据该段标题Update the plans 以及该段第一句话可知,要更新自己的计划,并继续自己没有完成的,故选D.