TAKE 22/ CONFIDENCE 23/ GRATEFUL 24/ WITH 25/ SUCCEED READ THE PAS...

21/ take 22/ confidence 23/ grateful 24/ with 25/ succeed Read the passage below carefully and choose the correct answer (A,B,C or D): There are many sources of pollution in our modern world. At present, the most serious sources are acid rain, car exhaust fumes and oil spills. Factory chimneys give out smoke that contains sulphur dioxide and nitrogen oxide. These gases combine with moisture in the atmosphere to form sulphuric https://traloihay.net 29 acid and nitric acid. When it rains, these acids dissolve in the rain and make it acidic. Acid rain is believed to be the worst pollution of all. It has harmed aquatic life by turning many lakes into lifeless bodies of water. Car exhaust fumes contain carbon monoxide and lead which are highly poisonous. In big cities, the exhaust fumes build up and pose a health hazard to human beings. Pollution of the sea by oil threatens marine life. Much of the oil comes from ships that clean their fuel tanks while at sea. Offshore oil wells also discharge vast amounts of oil into the sea. Pollution of the sea can also be caused by oil spills.