Размещено 4 года назад по предмету
Английский язык
от anastasiatorbinska6
7) Read the text about climate change. Choose the correct form, A or B, to complete the sentence. Rydeboab more At the moment. scientists agree that the world's climate a 8 warmer over the past 50 years, but they disagree about the causes. Some believe that human activities b climate change. They argue that for 1.000 or 2.000 years before 1850, when records .the temperature was more or less stable. Short warm or cold periods d during that time, but the climate always e to the same level. However, since the Industrial Revolution, human beings f and more fossil fuels, such as coal and oil. In 1800 the atmosphere g around 280 parts per million of carbon dioxide (CO). Since then there h an increase of about 31%. This extra carbon dioxide i the world's temperature because of the greenhouse effect. Other scientists disagree that human activities over the past 50 years global warming. They point out that volcanoes and other natural processes k CO, Into the atmosphere, and that human activity a rise in CO, of only three per cent. In 1999, 156 countries m the Kyoto protocol, part of a United Nations agreement on climate change, which ni into force in 2005. They to reduce their emissions of CO, and other greenhouse gases, although so far, some countries, such as the USA and Australia.p any action. a A became B has become b A caused B have caused C A began B have begun d A occurred B have occurred e A returned B has returned f A burned B have burned 9 A contained B has contained h A was B has been 1 A raised B has raised | A caused B have caused k A always B have always released released | A contributed B has contributed m A signed B have signed n A came B has come O A agreed B have agreed p A did not toke B have not taken