不健康的饮食英语作文800字【一】
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。
不健康的饮食英语作文800字【二】
the sun rises in the east and sets in the west, which is caused by the rotation of the earth as you all know. but have you ever thought of the effect of the earths rotation on man and can you imagine what would happen if the earth stopped rotating?
the radius of the earth is about 6,370 kilometres. it takes the earth 24 hours to rotate once. objects on the earths equator move with the earth at a speed of 460 metres per second, and the air close to the earths surface turns at the same speed. if the earth stopped rotating suddenly, the air would keep flowing eastward at a speed of 460 metres per second. the wind would be fourteen times as powerful as a hurricane. at the same time sea water would rush eastward at a speed of several hundred metres per second, which might do damages much greater than a seaquake would do. obviously, men could hardly stand such a catastrophe.
even if such a catastrophe would not happen, there would be a great temperature difference on the two hemispheres of the earth, and the four seasons of the year would no longer occur because a day and a night would be as long as a whole year instead of 24 hours. all this would greatly affect the life of human beings, imals and plants and that would cause worse results than anything imaginable.
不健康的饮食英语作文800字【三】
一日三餐究竟怎么吃?这个问题现在已经成了我们棘手的问题。为什么呢?因为我们现在的条件越来越好，但是却是越吃越不健康，然而，这种不健康的饮食习惯会把我们的身体变差，体质变弱，尤其是儿童，甚至会得一系列的疾玻到这里，我就要给大家推荐一种最为健康的饮食理念。
因为儿童活泼好动，而肝脏储备的能量有限，很容易产生饥饿感。所以儿童的一日三餐一定要吃好，才能确保儿童健康地成长。早餐要吃好，儿童必须早起，这样才能吃得下东西，吃早饭是要注意营养均衡;中午要吃饱，多吃肉、蛋、蔬菜和米饭，因为这顿中饭需要提供身体一个下午的能量;晚饭要吃少，食物要吃得清淡些，不要吃得过记饱，否则会加重胃肠负担，并影响睡眠。
你知道吗?人体到底是怎样吸收食物中的营养的吗?那么现
在，由我来告诉你们吧!
食物经过初步拒绝，通过咽喉和食道，进入胃，在胃里被进一步捣成“糊状”。口腔在细细咀嚼食物的时候，胃肠胰腺也会分泌消化液，咽下的食物团通过胃肠蠕动月消化液充分地混合。这些食物通过胃肌收缩过去进入小肠，小肠再把它们分解成可以吸收的养分。食物中的营养被小肠收服后，剩下的食物残渣就会随着小肠蠕动进入大肠，大肠进一步吸收残渣中放水份。最后，把没有用的残渣排除体外。
“人是铁，饭是钢，一顿不吃饿得慌!”这句话说得一点也没错啊!
