青少年为什么不进行锻炼英语作文【一】
Study is our student's personality.But many students will ask, why we must learn knowledge. Is knowledge so important to us?If we don't need to pass the exam, should we still need the knowledge?
As I am concerned, study is not only a personality of students, but also a personality of all people throughout their lives.People need to learn the knowledge whoever they are.If people don't learn knowledge, there will have no way to do things and become ignorant about world.Can you imagine a world that no people have knowledge?Leaving knowledge,the world would no get progress.If people don't learn knowledge, there will be no people to know how to use the computer ,how to write the news, even how to communicate with others.
So learning knowledge is a very important thing, it consists of our world.
青少年为什么不进行锻炼英语作文【二】
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Different people have different views on_____.Some people think that_____,whereas others aegue that __________.
As far as I am concerned, I agree with the opinion that ___________.For one thing,I firmly believe that ___________.For another,_____________.Just think of________,who/which_______.
Taking all these factors into consideration,we may safely come to the conclusion that______.Only if_______can we _______,just as the saying goes,________________.
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In recent years there have been many reports of ________.It turns a new chapter of _________in China,and will have far-reaching effects in the forthcoming years.
The biggest benefit,in my eyes,is that_______.In addition,_______.Finally,______________.
Apart from the benefits mentioned above,we should also face several unavoidable challenges.In the first place,_____________.In the second place,________.What’s more,_______________.In summary,we should_______________.
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Nowadays more and more ______are commonly and widely used in everyday life,ranging from __________to_____________.
The popularity of _______will have a great influence on ______.On the one hand,_________.On the other hand,__________.
To conclude,____________are just like a double-edged sword.With them we may________.However,one point should be kept in mind that we should make sensible use,always being a master instead of slaving of them.
青少年为什么不进行锻炼英语作文【三】
表妹拿着其中的一根，要我给她点燃，还说要让我看她的'一门绝技，“她，一个一年级的小学生，能有什么绝技呀？”我心里虽这样想，但还是很期待到底是什么绝技。
点燃的烟花无比漂亮，一点也不比大型烟花逊色，光芒像星子般闪耀着，闪耀着。
“姐你看好了啊！”表妹声势很大的对我说。“嗯好……”我有些小小的不耐烦。说着，她把另一只手伸到烟花附近，而烟花上的光芒也已经射到了她的手上，可她作一副轻松状：“啊真暖和，姐你要不要来暖暖手啊？”她热情的向我发出邀请。尽管我心里已经知道是怎么回事了，一两年前，哥哥向我展示过这门“绝技”。当时很好奇，也没有多问，便模仿着学会了。但是为了不使妹妹灰心，我还是装作很惊讶的样子：“哇！你怎么这么厉害呀！那儿一定很烫手！”妹妹看着我自豪的笑了。
回到家后，我的心久久不能平静，为什么不烫手呢？烟花温度一向是很高的呀，可为什么呢？疑团使我的好奇心愈发重了，便打开电脑查了一下。
哦，原来这种烟花叫做“冷光烟花”。 冷光烟花（又称冷焰火、冷烟花）冷焰火就是采用燃点 冷光烟花常用于制造舞台效果较低的金属粉末，经过一定比例加工而成的冷光无烟焰火，冷焰火燃点低，燃点在60℃-80℃ ，外部温度30℃-50℃，对人体无伤害。适用于舞台表演和各种造型设计。而普通焰火燃点在500℃-800℃之间，燃烧时容易对人体造成伤害。冷焰火科技含量高，以环保无污染而倍受人们青睐。冷焰火是近年来烟花发展新趋向，曾在上海APEC会议、悉尼奥运会、2002年日韩世界杯、全国九运会上崭露头角，冷焰火是现代烟花的高科技结晶。
查阅网上详细的资料，我终于知道这种名叫“冷光烟花”的烟花为什么离它很近也不会烫手了，博友们，你们明白了吗？
附：查阅资料
它的主要性能与特点有：
（1）产品依靠自身药剂燃烧时产生的声、光、色、火花和分支火，形成绚丽多姿的烟花效果及艺术造型，观赏效果极佳。
（2）燃放时无烟、无毒、无刺激性气味、无残渣，对人体无害。因此，不污染环境。
（3）生产和燃放时不产生爆炸，火花区不易引燃其它可燃物。因此安全性较高。
（4）单个产品可根据需要灵活设定燃放时间。
（5）生产工艺简单。一般情况下比传统烟花工序减少一半以上。
（6）燃放时气氛热烈欢快，效果独特，可控性强。广泛适用于节日庆典、生日等各种联欢会，可烘托出欢快的气氛。非常适合在家庭、酒吧、卡拉OK厅、舞台等室内室外场所燃放。
（7）性能价格比高，与国外同类型的产品相比有很大的价格优势。
