现在男子吸烟已经成为潮流,世界有13亿多烟民,其中超过四分之一是中国人。如今中学生在厕所吸烟并不罕见,殊不知吸烟有害健康。有很多成年人将吸烟有害健康这句话理解为“吸烟有害还健康”,实际上这句话的真正意义是吸烟对健康有害。
人体血液中含有血红蛋白,学过生物的人都知道血红蛋白能与氧气结合或分离,但很少有人知道它也能与一氧化碳结合,而且结合能力很强,是氧气的200--300倍,而且一旦结合便不容易分离,吸入大量一氧化碳人就会因缺氧窒息而死亡。这就是煤气中毒的原因(煤气中含有一氧化碳)。人在一氧化碳总浓度在百分之0.02的空气中持续两个小时就会出现中毒症状。香烟的烟气中含有几百种有毒有害物质,其中就有一氧化碳。
除了一氧化碳,香烟中还含有尼古丁和含有强烈致癌物苯并芘、二恶英的焦油。有人曾用小白鼠做过实验:把60支香烟的烟气浓缩后让小白鼠吸入,结果小白鼠因窒息和中毒而死亡。还有人把400支香烟的烟草浸泡在水里,水变成黑色后把它里面含有的水分蒸发掉后锅底沉积了很多黑色的焦油。这些黑色物质除了焦油之外还有剧毒物质尼古丁等几百种有害物质。
吸烟的害处可不仅仅是中毒这么简单。
一包名牌香烟的价格大约是20元,每包一般20支。按每天抽一包来计算,20年一共抽掉14.6万元。即使你不追求名烟,抽每包十元的普通香烟(同样每包二十支,每天抽一包),20年也要抽掉7.3万元!可见,香烟还危害人们的钱财。
更可怕的是,你抽掉的是你的生命!据研究,每抽一支香烟可缩短五分钟寿命,也许有人会问五分钟算不了什么,但每一秒累加起来就会变成一小时,每小时累加起来就会变成一天。按每天抽一包香烟(20支计算,每天缩短生命100分钟,一年就要缩短大约26天,一个烟民从25岁抽到55岁,每天抽一包香烟,就要少活两年。所以,吸烟会对生命造成严重的危害!吸烟者吸入的尼古丁和焦油会沉积在肺部,久而久之就会酿成肺癌。
综上所证,烟草属于一种强烈的致癌物,长期吸烟等于花钱买罪遭。
禁止吸烟,有利于身体健康、家庭幸福!
好的文章动静结合、张弛有度有节奏感。句式也是一样,要有变化性,这不仅能使文章更生动,也是语言表达方式的需要和表达能力的体现。句式的`变化,主要是要注意两点:
● 不要从头至尾使用一种句型。
● 长短句结合。
由于语言功底的欠缺和惯用思维,很多人写的文章一种句式到头,如:
I think …
I hope…
He does it.
He will take it
这样的文章虽然意思表达出来了,却显得呆板,欠生动。解决的办法是:
1.间或使用主从复句。
Because he is very much determined, he will carry it out this time. (原因
比较:He is very much determined. He will carry it out this time.
2.使用分词结构句。
The weather being fine, a large number of people went sightseeing.
比较:The weather is fine. A large number of people went sightseeing.
Africa is the second largest continent, its size being about three times that of China.
比较:Africa is the second largest continent. Its size is about three times that of China.
3.使用不定式句。
To be or not to be, that is a question. (莎士比亚
To study or not to study, that is much different.(引申
To do it well, you must plan it well.
比较:You want to do it well. And you must plan it well.
4.倒装句
Only when we fully recognize its importance can we have control of its essence.
比较:After we fully recognize its importance, we can have control of its essence.
No sooner had he arrived home than it began to rain.
比较:He arrived home. And it began to rain.
5.失衡句
whether or not he will come is still unknown to all the people present.
比较:No one present knows whether he will come or not.
That he has done it all by himself is known to everyone.
比较:Everyone knows that he has done it all by himself.
当然,句子并不是越长越好,也不是越复杂水平就越高。凡事皆有度。太多长句的堆砌让人觉得是买弄。有时侯,一个短小精辟的句子可以起到画龙点睛的作用。特别是在文末段尾。比如:
●As a creature, every one knows.
●Actions speak louder than words.
●Practice makes perfect.
吸烟的危害尽人皆知,但“吸烟”仍然成为当今一个极为普遍的现象。从年迈的爷爷、奶奶到十几岁的青年都有“人手一支烟”这种不良嗜好。香烟,竟有这样的魔力,让瘾君子如此迷恋。禁烟,竟有这样的困难,让戒烟者痛苦万分。
记得,我小时候就看过姥爷吸烟的模样。据说,姥爷已经有几十年的“烟龄”了。他老人家常常右手持烟,叼入口里深吸一口,那样子别提多满足、自在了。然后,几个白色的烟圈便从他嘴里慢慢地吐出来,可又从两个鼻孔里吸了回去,就这样进进出出,好似龙王爷吞云吐雾一般。到最后,浓浓的烟雾又从他嘴里喷薄而出,空气里立刻弥漫着一股烟草刺鼻的辣味。我站在一旁,被姥爷吐出的“二手烟”呛得不停地咳嗽,连忙冲他大喊:“姥爷,别吸烟了!别吸烟了!”姥爷却手一扬,满不在乎地笑了笑,嘴里不经意地露出了黄斑斑的牙齿,说:“丫头片子管什么!我身体好着呢,能出啥事儿!”说着,又掏出一支烟,美滋滋地递到嘴边。有时姥爷烟瘾上来了,多吸了几支,不免遭姥姥埋怨。“你呀你,唉,让人怎么说呢。说了多少次“吸烟有害健康”,你怎么不听劝呢?”姥爷却仍不当回事:“饭后一支烟,身体赛过活神仙,没事没事。”说话间又去吐烟圈去了。后来,在我上一年级的时候,姥爷因为吸烟过多,整天咳嗽个不停,愁眉不展。我知道,如果姥爷早点听从我们的忠告,把吸烟的陋习戒掉,现在也不至于如此痛苦。
There are many students smoking in senior high school, the reason may be that they think they look cool or appear to be more mature while having a cigarette at hand.But there are a lot of reasons not to smoke. Smoking does harm to our health.It is dangerous to our heart and lung. A lot of diseases are caused by cigarettes.Cigarettes also have terrible smell.The seconghand smoke can also be dangerous to the others who stand around you. Therefore, no smoking in public is a strict regulation in many countries. And the most important thing is that once you come into addicitive,it's hard to get rid of it. So,we must keep far from the cigarette——for everybody's health.
高中里有很多学生吸烟,原因可能是他们觉得手中有一支烟看上去很酷或者显得更成熟。但是,不吸烟的原因有很多。吸烟有害我们的健康,对我们的心脏和肺很危险。很多疾病都是由香烟引起的,而且烟的味道不好闻。二手烟对周围的.人也很危险。因此,公共场所禁止吸烟是很多国家的一项严厉规定。最重要的是,一旦你上瘾了就很难戒掉了。所以,为了每个人的健康,我们必须远离香烟。
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