[long P] Writing Practice Test 591363

The first diagram depicts how a wave-energy machine works while the second diagram illustrates the convenient place to settle this machine.

Overall, wave-energy machine create power by a big turbine which need air from the top and bottom.

Looking at the former diagram, a wave-energy machine have two chambers with turbine is situated at the top chamber. Both two chambers have two separate vent which allow a circulation of air flow to make the turbine spin. Furthermore, while air at the top come from wings, waves from the bottom create air.

At the latter diagram, we can see that the productivity of wave-energy machine based on the distinction of it from land. The wave-energy machine build near the shore with the small waves is get lower output compared to the one is built far the shore with large waves. However, the costs to build it is smaller than due to the size and the difficult of it.

In recent years, online shopping has become more popular due to the convenient bring to us. However, it can cause some drawbacks in some aspects. As far as I am concern, I believe that buying goods on website have more positive than negative.

On the one hand, individuals think buying online bring disadvantages for some reasons. Firstly, when they look for their need on the Internet, they can not see or touch it in reality, it is quite hard to vertify the quality of these products. As a result, most of people abandone it because of unvaluable. Moreover, they might be decepted when surfing the strange sites.

On the other hand, online shopping have some advangtages since it help people to take their time for other purposes which help people save a great deal of time. For example, instead go to the stores and look for every satisfactory products, now they just need connect to the internet and browse each web to find at home. Secondly, they can see the feedbacks from previous clients as well as the evaluate of the supplier that make buyers easier to make decision what to buy.

Furthermore, browse the Internet provide a wide range of options which make a wise choice more comfortable for customers without limitation. A result in 2010 show that 90 percent people tend to use internet for buying goods because they can access all store and choose what they want easily.

In conclusion, although buying things on the internet sometimes make individuals doubt about the quality of products, the benefit of it is endless because of the convenient and flexible.