Tiêu đề Unit 5- Test 1 key.doc ✅

A. energy-saving B. carbon emissions C. alternative sources D. extreme conditions 16. Global warming is driven by emissions of_______ primarily from human activities. A. greenhouse gas B. climate expert C. solid fuel D. heat-trapping gases 17. Ocean water also will expand if it warms, _______further to sea level rise. A. getting B. making C. directing D. contributing 18. The clearing of land for agriculture, industry, and other human activities have increased_______ of greenhouse gases. A. concentrations B. attention C. lots D. collections 19. ______________ is the increase in the temperature on Earth A. Greenhouse effect B. Global warming C. Climate change D. Ecological balance 20. A layer of greenhouse gases - primarily water vapor, and carbon dioxide - acts as a _______ blanket for the Earth, absorbing heat and warming the surface. A. thermal B. hot C. heat D. heating 21. Most climate scientists agree the main cause of the current global warming trend is human expansion of the greenhouse _______. A. causes B. effect C. gas D. damage 22. Certain _______in the atmosphere, such as carbon dioxide, methane and nitrous oxide, block heat from escaping. A. effects B. emissions C. gases D. layers 23. Carbon dioxide is released through_______ processes such as respiration and volcano eruptions and through _______ activities such as deforestation, land use changes, and burning fossil fuels. A. human-natural B. natural – human C. man-made-ordinary D. ordinary-man-made 24. Although global warming is causing changes in weather patterns, it is only one aspect of ________ A. global warming B. ecological balance C. climate change D. carbon footprint. 25. Certain ______in the atmosphere such as carbon dioxide, methane and nitrous oxide, block heat from escaping. A. effects B. emission C. gases D. layers 26. _____________ means changes in the earth’s weather, including changes in temperature, wind patterns and rainfall. A. global warming B. ecological imbalance C. greenhouse effect D. climate change 27. Greenhouse gas __________ from factories and vehicles can result in global warming A. emit B. emissions C. effects D. causes 28. Most of the jungle was ________________ to get wood in order to produce paper products. A. deforested B. threatened C. warned D. emitted 29. A large amount of carbon dioxide __________ are released into the atmosphere by burning fossil fuels. A. emit B. carbon footprint C. emissions D. greenhouse gas 30. Oil spills are a great ____________ to the undersea world A. threat B. threaten C. threatened D. threateningly 31. Environmental pollution is becoming an _____ serious problem that needs to be taken care of as soon as possible. A. increasing B. increasingly C. increase D. increased 32. _____ air makes people unpleasant to breathe. A. Pollute B. Pollution. C. Polluted D. Polluting 33. People are destroying the air by adding _____ to it. A. pollutants B. polluters C. pollution D. polluted 34. Coal, gas and oil are _____ forms of energy that cannot be replaced after used. A. unlimited B. renewable C. nonrenewable D. contaminated 35. After we read the report on how the burning of petrol in cars _____ to climate change, we determined to reduce our carbon footprint. A. devote B. contribute C. result D. cause 36. The project's impact ________ the environment should be minimal. A. on B. at C. for D. to 37. The men came to remove the rubbish ________ the backyard. A. in                       B. of                             C. for                                     D. from 38. _____ is destroying larger areas of tropical rain forests A. Afforestation B. Deforestation C. Reforestation D. Forestry 39. Too many greenhouse gases in the atmosphere may block heat from escaping into space and trap too much heat next to the Earth’s surface causing _______.