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LÍ N G U A IN G LE SA 81 we face monumental challenges: global warming, the waning of natural resources, explosions in population growth, increa- sing energy demand, rising energy prices, and unequal distri- bution of energy sources. All of these factors(a) contribute to the urgent need(b) to transform the energy sector(c) - which primarily relies on fossil fuels(d) - to one that uses renewable energies and energy efficient measures(e). Renewable energy is one of the key solutions to the current challenges facing the world’s energy future. Many countries already foster the production and use of renewable energy through different approaches on a political and economic level because they recognise the many benefits renewable energy provides. The current use of renewable energy, however, is still limited in spite of its vast potential. The obstacles are manifold and include: lengthy permitting procedures, import tariffs and technical barriers, insecure financing of renewable energy projects, and insufficient awareness of the opportuni- ties for renewable energy. This is where the International Renewable Energy Agency (IRENA) can play a role. A major task of the Agency is to develop comprehensive solutions to the above- mentioned challenges, such as fostering all types of renewable energy, and to con- sider various renewable energy policies at the local, regional, and national levels. IRENA was officially established in Bonn on 26 January 2009. To date 142 states and the European Union signed the Statute of the Agency; amongst them are 48 African, 37 Euro- pean, 33 Asian, 15 American and 9 Australia/Oceania States. Mandated by these governments worldwide, IRENA will promo- te the widespread and increased adoption and sustainable use of all forms or renewable energy. Acting as the global voice for renewable energies, IRENA will facilitate access to all relevant renewable energy information, including technical data, eco- nomic data and renewable resource potential data. IRENA will share experiences on best practices and lessons learned regar- ding policy frameworks, capacity-building projects, available finance mechanisms and energy efficiency measures related to renewable energy projects. In fulfilling its work, IRENA considers specific environmen- tal, economic, and socio-cultural conditions of its Members. The active involvement of stakeholders from the energy industry, academia, civil society, and other institutions is very important for the Agency to implement successful and enduring policy solutions. Therefore, it intends to regularly consult and cooperate with organisations and networks already engaged in the field of renewable energy in order to complement and pool their work resources, thus creating added value. http://www.irena.org/, access on March 14, 2010. (Adapted) In the fragment “which primarily relies on fossil fuels” the pronoun ‘which’ refers to a) “...these factors...” b) “...urgent need...” c) “...energy sector” d) “...fossil fuels” e) “...energy efficient measures.” GABARITO 1 D 9 B 2 B 10 A 3 C 11 C 4 C 12 E 5 A 13 D 6 E 14 D 7 C 15 E 8 D 16 E 17 C 67 D 18 D 68 C 19 E 69 D 20 A 70 C 21 D 71 D 22 C 72 B 23 B 73 A 24 A 74 D 25 E 75 E 26 B 76 B 27 D 77 C 28 A 78 D 29 B 79 B 30 D 80 D 31 A 81 E 32 E 82 A 33 B 83 C 34 E 84 C 35 A 85 B 36 D 86 A 37 A 87 A 38 D 88 E 39 B 89 A 40 D 90 C 41 E 91 D 42 A 92 B 43 E 93 B 44 C 94 E 45 B 95 B 46 D 96 D 47 D 97 E 48 A 98 A 49 C 99 C 50 A 100 A 51 B 101 B 52 D 102 D 53 E 103 B 54 E 104 C 55 D 105 B 56 D 106 E 57 C 107 E 58 C 108 D 59 B 109 A 60 C 110 E 61 D 111 B 62 A 112 C 63 B 113 D 64 C 114 C 65 E 115 E 66 D 116 A