The world has experienced【L1】______ urban growth in the recent decades. As much as 3% of Earth’s【L2】______ has been urbanized, a

Parts of the following text are missing. While listening to the tape, complete the passage by filling in each blank space with the correct word or words on the ANSWER SHEET. There are 20 blanks, each carrying 1 point. You will hear the passage only once. At the end of the recording, you will have 3 minutes to finish this part.
   The world has experienced unprecedented urban growth in the recent decades. As much as 3% of Earth’s landmass has been urbanized, an increase of at least 50% over previous estimates. Today, people living in cities already outnumber those in rural areas and the trend does not appear to be reversing. In addition, cities have large amounts of carbon consumption than rural areas. This is a result from two major aspects. First, with the increase of urban population around the world, the massive construction of urban infrastructure and residential housing is hard to avoid.
   Second, urban households have a higher rate of car ownership and use more products. Even though rural exodus is often negatively judged, there are also benefits of migration shared by the local environment and the society as a whole. Well, firstly, global trends of increasing urban migration and population urbanization can provide opportunities for nature conservation, particularly in regions where deforestation is driven by agriculture. As rural dwellers leave their homes, local forests are left to recover. What’s more, it is easier for city dwellers to get around. Living in the country means transport can be very difficult. For instance, after midnight there are no buses or taxis in the countryside. However, there is still a number of public transport modes to choose from in the city. Finally, with more funds and advanced technology, cities endeavour to produce clean energy. New power plants have been built to take harmful methane gas created by the decomposition of rubbish, and convert it into electricity. By doing so, an important greenhouse gas is turned into useful energy rather than being directly emitted into the atmosphere.