下面是一些关于学生吸烟的数据，请用一句话概括它的主要内容。（不超过40字）

    据有关统计，我国吸烟人群平均年龄呈下降趋势，各职业高中生中，超过90%的男生吸烟，我国13~18岁青少年约1.3亿，已超过5000万人吸烟或尝试吸烟。吸烟学生出现斗殴、赌博和观看色情制品的行为是不吸烟学生的2.6倍至4.1倍，吸烟学生出现抑郁、自杀意念和离家出走行为是不吸烟学生的1.2倍到4倍，失足青少年试吸率和吸烟率分别为94.6%和69.7%。

    To breed snails (蜗牛) well, you need to spray water to the container every morning and evening, change soil every two weeks, and feed them with cabbages and sweet fruits—this is what Sun Youxiang, a fourth-grade primary school student in Hangzhou____(conclude) after breeding snails for one year.

    From three small white snails at the very beginning____more than 60 snails of four generations now, he has done a great job in his assignment for his science class____(witness) the reproduction of animals is a precious experience for kids. Their____(create), patience, and respect for life will be stimulated (激发) as they learn to take care of animals on their own.

    Sun's teacher said the assignment served as a good example of life education. Practice____(be) an essential step in leaning, which will benefit the kids for____life time. Life education allows kids to know how to live with nature and creatures in a friendly way.

    Starting from this year, Science will become an____ (equal) important subject as Chinese and Math in primary schools____aims to improve students' knowledge about the surroundings____(draw) by curiosity, more kids will be willing to observe and think through practicing, which will add to____(they) recognition of the world in the long run.

上海华谊集团是中国最大的化学原料及化学品制造商之一，2008年以来在安徽无为县经济开发区的煤化工、氟化工和汽车轮胎项目相继建成投产，实现了“编队出海”的目标。据此完成下列问题。