You are the project manager for software development project．The feasibility study can start any time and takes 1 week and requirement gathering takes 2 weeks which can start only after feasibility study．The design and test plan development can start in parallel after the requirements gathering．Test plan preparation takes 8 weeks followed by a review by the customer and the time estimated for review is 1 week．After the review，Test data preparation takes 6 weeks．Design takes 6 weeks and it is followed by development and unit testing，for one module it takes 2 weeks and for the other module it takes 2 weeks．There are no dependencies between modules and they can be developed simultaneously．After test data preparation and development and unit testing of both the modules，there is 2 weeks system testing．What is duration of the critical path ？（）

A．14 week

B．15 week

C．20 week

D．19 week

对下面这首小诗修辞方法作用的分析，有误的一项是（   ）

给友人

不站起来 才不会倒下         我们就这样携着手

更何况 我们要去浪迹天涯     走呵 走呵

跌倒是一次纪念             你说 看到大海的时候

纪念是一朵温馨的花         你会纵情欢笑

寻找 管什么日月星辰       是呵 是呵

跋涉 分什么春秋冬夏       我们的笑 直上云霞

A．诗中说“跌倒是一次纪念”，又把这种“纪念”比喻成“花”，生动形象地表达了挫折也是人生中的美好经历的感悟。

B．诗中的“寻找管什么日月星辰∕跋涉分什么春秋冬夏”，运用对偶，句式工整，抒发了对同甘共苦的友谊的赞美之情。

C．诗中反复使用“走呵”，强调了无论前方的道路有多么艰难、多么漫长，“我们”都要携手前行、永不言弃的态度。

D．诗的结尾用笑声“直上去霞”的夸张表述，形象地表达了实现人生愿望时“我们”的喜悦之情，给人留下深刻的印象。