下列填入文中横线上的语句，最恰当的一项是（ ）
青年人要积极创新创业，在建设“一市一区”的实践中显身手、展才华。_______。青年人一定要勇于走在时代的前沿，有一股子闯劲，有初生牛犊不怕虎的勇气，有敢叫日月换新天的豪气，敢想、敢为，积极投入到社会实践中，发挥自己的聪明才智，成就自我，贡献社会。
本题考查语言连贯的能力。“朝气”“活力”“创造力”是按照逐层深入的次序列举青年人具有的精神和品质；故选A。
---Do you often get on-line?
---Yes.I ______ most of my time on it .It’s a good way to kill the time.
The children ______ not to play with the fire .
An earthquake _______ Dachaidan County in Qinghai province on the morning of April18.
---There’s going to ______ a concert in the hall tonight.
---Yes, and the last performance will be given by Michael Jackson.
---Could you tell me how to improve spoken English ?
---Well,just take every chance to practise ______and don’t be shy.
A number of people in Beijing ______ caught SARS and the number of the people who died of SARS _____ reached nearly one hundred so far.
Roy made several kites ,but _____ of them can fly high in the sky.
Those_____ have caught SARS disease must be kept off from us.
---May I ______ your dictionary for a while?
---Sorry, I’ve left it at home.
---You’ve dropped _____ “s’’ in the word “acros’’.
---Oh, ____ letter “s’’ should be doubled like this “across’’.
