48. In the last paragraph, what does the writer suggest people do?
(A) Join Tam-tam with a music instrument.
(B) Take your friends and family to Tam-tam.
(C) Make friends with other tourists at Tam-tam.
(D) Take a music class before you come to Tam-tam.Leading investors are getting more concerned about governments and companiesrushing into producing biofuels as a solution to global warming. These investors point outthat many involved in the industry could harm future profits if they do not considercarefully the long-term impact of what they are doing. It is essential to build standards intothe supply chain of any green fuel project so that there is no negative effect on thesurrounding environment and social structures. The report produced by the investorsexpresses concern that many companies may not be fully aware of the potential pitfalls inthe biofuel industry. Production of corn and soy beans has increased greatly in the past fewyears as an eco-friendly alternative to fossil fuels. However, environmental and humanrights supporters are worried that this will lead to destruction of rainforests. Food pricescould also go up as there is increased competition for crops as both foodstuffs and sourcesof fuel. Recently, the United Nations warned that biofuels could have dangerous sideeffects. They also said that steps need to be taken to make sure that land transformed togrow biofuels does not damage the environment or cause local people’s dissatisfaction.There is already great concern about palm oil, used in many foods besides being animportant biofuel, as rainforests are being cleared in some countries and people are forcedto move away from their homes to create palm oil farms. A report says that biofuels arenot a cure for climate change but they can play their part to help the environment as longas governments and companies can manage the social and environmental impactsthoroughly. There should also be greater measures taken to increase efficiency and toreduce demand.(Source: http://www.usingenglish.com/comprehension/)