Choose the best answer A, B, C or D to complete the sentence. 11. After the accident, many people were exposed________ radiation. A. from B. at C. to D. with 12. Light pollution has a wide range of negative effects________ I’m human health. A. on B. of C. for D. to 13. ________can cause high blood pressure, heart problems, sleep disturbances, and hearing problems. A. Air pollution B. Light pollution C. Water pollution D. Noise pollution 14. The levels of carbon dioxide in the atmosphere have risen________ the burning of fossil fuels. A. therefore B. because C. in spite of D. due to 15. If rubbish is non-biodegradable, it________ forever. A. exists B. will exist C. won’t exist D. doesn’t exist 16. ________are Chemicals that are used to kill unwanted plants, such as weeds. A. Fertilizers B. Pesticides C. Herbicides D. Pollutants 17. There would be much less pollution________ people stopped using cars completely. A. if B. since C. when D. although 18. Emissions of pollutants into the air can________ changes to the climate. A. get on B. end up C. go into D. result in 19. ________can we help save our environment? A. What B. How C. Why D. How much 20. If we care about plastic waste________. A. why won’t we stop drinking bottled water? B. we would use reusable shopping bags C. we will throw away plastic water bottles. D. why don’t we buy plastic bags? 23. John: “I’ve passed my final exam.”- Tom: “____________” A.Good lock. B. It’s nice of you to say so. C.That’s a good idea. D. Congratulation! 24. Hung: “Would you like to have dinner with me?”- Lam: “__________.” A.Yes, I’d love to B. I’m very happy C.Yes, it is D.Yes,so do I