The diagrams below show the amount of energy lost in 100 units when is generated from black coal and when it is generated from brown coal.
Word count: 196
The two diagrams present the information of energy loss in every 100 units fuel energy, from black coal and brown coal respectively.
It can be seen from the first diagram that in the first stage where the brown coal is sent to the power station，there are 70 units energy wasted，accounting for a large proportion of the whole energy. In the following stage, transportation and distribution, a relative marginal amount of energy is lost (3 units)，and the remainder is only 27 units when it is consumed by the consumes in the final step.
The black coal, on the other hand, shows a similar energy loss pattern compared with its brown counterpart. When it is transported, the energy loss amounts to 68 units, which means more than half of its original energy is lost. In the stage of transportation and distribution, the same quantity of energy is wasted in comparison to the brown coal. The consumers, who will finally utilize the energy，can only share a small proportion of fuel energy.
Overall, the black coal loses less energy than the brown coal and the second stage will cost most of the fuel energy.
More people are using mobile phones and computers to communicate. Therefore, people are losing the ability to communicate with each other face to face. To what extent do you agree or disagree?
(Word Count: 325 )
Now you are benefiting from the use of the mobile phone and the Internet as social interaction media, could you imagine what your daily lives would be without these inventions? Some people claim that individuals are gradually losing face-to-face communication skills. Nevertheless, from personal perspective, online communication cannot make people lose the ability of offline communication.
Apparently, excessive use of the Internet and mobile phones has been undermining our interpersonal relationship offline. Even during a face-to-face conversation, it is no rare thing that everyone is busy looking at his cell phones, neglecting his friends or families across the dinner table. In addition, it has become incredibly easy to contact each other electronically and share information instantly in social community. Gone are the days when people could only communicate via fixed telephone or writing letters which took several days to reach others. So no one is not crazy about smart phones and computers which boast cutting-edge functions like sharing photos and videos with more friends simultaneously.
In spite of the popularity of technological progress mentioned above，never should we turn a blind eye to the irreplaceability of face-to-face communication. It is common that many schools impart knowledge to students by teaching in classrooms instead of distance education. The same is true of the cooperation among companies, which needs face-to-face conversation to acquire trust with each other in advance. Furthermore, although online contact may possess increasing numbers of friends, the permanence of mutual relationships cannot lack face-to-face interactions, which can be confirmed by the example of the closest friends and even loving couples. Besides，solving tricky issues are generally more effective and more convenient by surrounding colleagues or friends than by those who live and work in remote places and need online communication.
As far as social interaction is concerned, although the cell phone and the Internet have updated the lives of the current generation, people cannot forget how to make offline communication with each other.