2015年02月20日 无忧小雅哥
The diagram illustrates the process of purifying contaminated water for the purpose of creating drinking water.
Overall, the process filters out impurities by passing water through different layers.
The first main component of the purifying system is a barrel that is used for filtering the water. Unpurified water is collected in a smaller container and then poured into the top of the filtering tank through a removable lid. Inside the container are three levels of materials, the first being a layer of sand. After water drains through the sand, it passes through a layer of charcoal and finally settles through gravel.
The water is clean when passing through the layer of gravel, but must first be transferred to a separate barrel is then used for storing clean water. The filtering tank has a tube protruding out of the bottom that is connected to a motor, which sucks out clean water from the bottom and passes it on to the clean water storage tank. Drinking water is then accessible via a faucet at the bottom of the clean storage tank.
Some people believe the use of mobile phone in certain place is anti-social like smoking. So if smoking is banned in certain place, mobile should be banned as well. To what extent do you agree or disagree?
Nowadays, mobile phones are everywhere, seemingly controlling people’s behaviour and limiting the interactions and experiences people have. Some have likened the antisocial characteristics associated with mobile use with that of smoking, and state that mobiles should therefore be banned in certain areas. I partially agree, as mobile use can show antisocial behaviour, but I do not think that laws should be made to ban them for social reasons.
Admittedly, choosing to interact with a smartphone instead of other people is certainly antisocial. Personally, after running out of mobile data for the month, I looked up from my phone while commuting on public transit and took notice of how many others were glued to their phones. The amount was staggering, with almost everyone using a mobile. Some campaigns and advertisements have even advocated against such antisocial behaviour by showing people at a restaurant using their phones and not eating.
However, the choice to be social is a personal one, not one that can be imposed against a person’s will. I recently went to a dinner out with my partner, and neither of us had service within the restaurant. What ensued was a delightful meal full of laughter and conversation. Regardless of how pleasant the meal was, regulating social behaviour is not justified and should be left in the hands of private businesses and citizens. For instance, movie theatres can certainly ask patrons not to use mobiles during a movie, but governments cannot restrict people from checking email during dinner.
In conclusion, social interaction can be lost when using a mobile phone instead of enjoying the company of others. However, banning the use of phones is not justifiable.
喜欢就「赞」一下吧~ 关注 mel51ielts
「分享」赚人品, 灭雅思 「...」
作者介绍