题目

If you could see a movie of your life before you lived it, would you want to live it? Probably not. The excitement of living is that you don’t know what’s coming. Sure, it’s hard to see uncertainty(不确定) in such positive（积极的）light when you’re out of work, or when you feel like you’re failing. But uncertainty is really another word for chance. When Allison graduated from Harvard, she had chances all over the place but had no idea what she wanted to do. She took a job in consulting（咨询）, but she knew she wouldn’t stay there. She took the GRE and scored so high t 下列操作或用途中，既跟二氧化碳的物理性质有关，又跟二氧化碳的化学性质有关的是 A．用二氧化碳制干冰               B．将二氧化碳加压溶解制汽水 C．二氧化碳可使石灰浆变硬         D．二氧化碳可用来灭火