从生活走进化学，从化学走向社会。请回答下列问题：

(1)社会实践活动小组的同学们给敬老院送去鲜花，花香满屋。请用分子的观点解释闻到香味的原因___________________________________。

(2)在普通汽油中加入适量的燃料乙醇可制得乙醇汽油，用乙醇汽油作为汽车燃料越来越受到重视。请你答出使用乙醇汽油的优点（一条即可）

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A youth went to visit a sage (智者) in a mountain  小题1:  the wisdom of life.

“Could you please tell me what is the most important day in our lives? Is it the day we die or the day we were born,  小题2:  the day our career takes off?” the youth asked.

“ 小题3:  of those. The most important day in our lives is today.” The sage replied immediately.

“Is  小题4:  because of my visit?” the youth asked in surprise.

“Even if nobody visited me today, today would still be important. No matter how memorable yesterday is, it has gone by like  小题5:  ship sinking into the sea, no matter how brilliant tomorrow may be, it is not yet to come; but小题6:  simple today is, it is under your control.”

Inspired, the youth nodded and went away.

Today is the only wealth we have.  小题7: , what we should do now is to forget yesterday and tomorrow, and quickly grasp  小题8: