我请教一下只有一段的阅读如何划分层次

我请教一下只有一段的阅读如何划分层次，比如下面面这段文章，我感觉每句话都是有自己的意思很难感觉你几句话是一个层次。几乎每句都有but，althoug 这种词，麻烦谁帮忙指点一下，现在看见一段的阅读就害怕，比较喜欢多段的。谢谢

Many people believe that because wages are lower in developing countries than in developed countries, competition from developing countries in goods traded internationally will soon eliminate large numbers of jobs in developed countries.  Currently, developed countries' advanced technology results in higher productivity, which accounts for their higher wages.  Advanced technology is being transferred ever more speedily across borders, but even with the latest technology, productivity and wages in developing countries will remain lower than in developed countries for many years because developed countries have better
                    infrastructure and better-educated workers.  When productivity in a developing country does catch up, experience suggests that wages there will rise.  Some individual firms in developing countries have raised their productivity but kept their wages (which are influenced by average productivity in the country's economy) low. 
                    However, in a developing country's economy as a whole, productivity improvements in goods traded internationally are likely to cause an increase in wages. 
                    Furthermore, if wages are not allowed to rise, the value of the country's currency will appreciate, which (from the developed countries' point of view) is the equivalent of increased wages in the developing country.  And although in the past a few countries have deliberately kept their currencies undervalued, that is now much harder to do in a world where capital moves more freely

谢谢谢谢