Question 1: Do you know what is the cause __________ pollution? A. of B. in C. on D. for Question 2: My mother has to measure blood __________ every month A. billboard B. pressure C. groundwater D. earplug Question 3: __________ pollution is harmful or annoying level of noise, as from vehicles, industry activities, etc. A. light B. visual C. soil D. noise Question 4: Parents should teach children not to __________ wastes on the road A. litter B. poison C. cause D. measure Question 5:I can’t hear your voice __________ I’m wearing an earplug A. although B. due C. however D. because Question 6:His grandfather made him __________ hard when he was small A. study B. to study C. studying D. studied Question 7: This picture __________ the contamination of ground water. A. illustrate B. illustrating C. illustrates D. illustrated Question 8: Could you list some non-point source __________? A. pollution B. pollutants C. polluting D. polluted Question 9: Scientists has just come up __________ a solution to hearing loss A. to B. on C. with D. down Question 10: If we dump a plastic into the ground, it __________ a long time to disappear. A. will take B. take C. took D. takes Question 11: Pollutions are harmful __________ human health A. with B. at C. to D. on Question 12: __________ water resulted in the death of many aquatic animals. A. Contaminate B. Contaminated C. Contaminating D. Contamination Question 13:What would you do if a factory in your neighborhood __________ untreated water into the river? A. dump B. dumped C. dumping D. dumps Question 14:Have you ever heard about the __________ of radioactive pollution? A. affects B. effects C. pollutes D. poisons Question 15: : __________ pollution is the increase of temperature caused by human activity. A. visual B. water C. thermal D. radioactive