我们的生活与化学密切相关．现有下列生活中的常见物质：
①二氧化碳 ②氧气 ③金刚石 ④石墨 ⑤活性炭 ⑥一氧化碳
请用上述物质的序号填空（每空只填一种）：
（1）用于急救病人的气体是______．
（2）可用于作干电池电极的是______．
（3）可用于灭火的是______．
（4）常用冶炼金属的还原剂______．
（1）用于急救病人的气体是氧气．故填：②．
（2）可用于作干电池电极的是石墨．故填：④．
（3）可用于灭火的是二氧化碳．故填：①．
（4）常用冶炼金属的还原剂一氧化碳．故填：⑥．
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| Inspiration "Mama, when I grow up, I'm going to be one of those!" I said this after seeing the Capital Dancing Company perform when I was three. It was the first time that my __1__ took on a vivid form and acted as something important to start my training. As I grew older and was __2__ to more, my interests in the world of dance __3__ varied but that little girl's dream of someday becoming a __4__ in the company never left me. In the summer of 2005 when I was 18, I received the phone call which made that dream a __5__; I became a member of the company __6__ back to 1925. As I look back on that day now, it surely __7__ any sense of reality. I believe I stayed in a state of pleasant disbelief __8__ I was halfway through rehearsals (排练) on my first day. I never actually __9__ to get the job. After being offered the position, I was completely __10__. I remember shaking with excitement. Though I was absolutely thrilled with the change, it did not come without its fair share of __11__. Through the strict rehearsal period of dancing six days a week, I found it vital to __12__ up the material fast with every last bit of concentration. It is that extreme __13__ to detail (细节) and stress on practice that set us __14__. To then follow those high-energy rehearsals __15__ a busy show schedule of up to five performances a day, I discovered a new __16__ of the words "hard work." What I thought were my physical __17__ were pushed much further than I thought __18__. I learned to make each performance better than the last. Today, when I look at the unbelievable company that I have the great __19__ of being a part of, not only as a member, but as a dance captain, I see a __20__ that has inspired not only generations of little girls but a splendid company that continues to develop and grow-and inspires people every day to follow their dreams. | ||||
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