Giúp mình với C. Before D. As soon as,8. Air pollution occurs when the atmosphere contains gases, dust, or fumes in _____ amounts.,A. unharmed B. harmless C. harm D. harmful,9. When radiation goes into the land, air or water, it is called radioactive _____.,A. pollution B. polluted C. pollutants D. polluting,10. Too much use of electric lights in cities may _____ light pollution.,A. go B. result C. cause D. lead,11. _____ pollution is the contamination of lakes, rivers, oceans, or groundwater, usually by human,activities.,A. Soil B. Air C. Noise D. Water,12. Land pollution happens when human activities _____ the Earth's surface.,A. cover B. destroy C. damages D. cause,13. Noise pollution occurs _____ there are too many loud sounds in the environment.,A. while B. and C. because D. so,14. The sight of too many telephone poles, advertising billboards, overhead power lines, or shop signs may,cause _____ pollution.,A. visual B. vision C. visualize D. visible,15. People don't care much about the environment, so they keep _____ it worse.,A. made B. making C. to make D. make,16. She suffered _____ a serious disease because of drinking contaminated water for a long time.,A. in B. at C. to D. from,17. The roads were slippery _____it started tooraain,A. so B. as soon as C. when D. before,18. We hope more people join our _____ programme.,A. environment B. environmental C. environmentalist D. environmentally,19. Harmful gases like nitrogen oxides and sulphur oxides are _____ into the atmosphere during the,burning of fossil fuels.,A. releases B. released C. release D. releasing

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