I. Choose the words whose underlined part is pronounced differently from that of the others in each group. 1. A. abundant B. nuclear C. truck D. dump 2. A. played B. crossed C. described D. terrified 3. A. decided B. danced C. discussed D. pronounced 4. A. bread B. great C. instead D. spread 5. A. blood B. vocabulary C. doubtful D. boring 6. A. hydroelectric B. environment C. solar D. biogas 7. A. pleasure B. feed C. heat D. meat 8. A. plentiful B. electric C. renewable D. energy 9. A. few B. knew C. new D. sew 10. A. nuclear B. truck C. abundant D. dump II. Choose the word whose main stressed syllable is placed differently from that of the other in each group. 1. A. musician B. enormous C. natural D. improvement 2. A. effective B. plentiful C. dangerous D. limited 3. A. population B. education C. consumption D. satisfaction 4. A. energy B. countryside C. changeable D. volunteer 5. A. renewable B. artificial C. unfortunate D. continuous 6. A. different B. serious C. effective D. regular 7. A. dangerous B. countryside C. energy D. volunteer 8. A. incapable B. sincere C. loyalty D. success 9. A. development B. satisfaction C. population D. education 10. A. interfere B. convenient C. referee D. cigarette Choose the best answer to complete each of the following sentences. 1. The wind, the sun, and the wave are some types of __________ sources of energy. A. changeable B. alternative C. cheap D. costly 2. Remember to __________ the lights before going to bed. A. turn B. turn on C. turn off D. stop 3. People will reduce energy __________ as much as possible. A. consume B. consumption C. expense D. expenses 4. Nuclear power is expensive and dangerous __________ our environment. A. for B. to C. in D. with 5. Human is looking for a clean, cheap and __________ sources of energy. A. effective B. effect C. effectively D. effectiveness 6. Low energy light bulbs should be used to __________ electricity. A. spend B. buy C. convert D. save 7. We must __________ the amount of water our family used every day. A. lower B. reduce C. lessen D. narrow 8. At this time next month we __________ to Ha Long Bay for a holiday. A. will go B. will going C. will be gone D. will be going 9. By the middle of the 21st century, people in developing countries __________ more renewable energy. A. uses B. will be using C. used D. have 10. Fossil fuels are very common in our society but they __________ the environment. A. renew B. provide C. waste D. pollute 11. When you save energy, you not only save money, you also reduce the demand for __________ such as coal, oil, and natural gas and that is a great way to play a part in saving the planet. A. carbon footprint B. electricity C. fossil fuels D. biogas 12. In India, the demand for __________ has always been more than the supply. A. shortage B. sources C. slogan D. electricity 13. __________ energy is produced by collecting sunlight and converting it into electricity. A. Hydro B. Nuclear C. Solar D. Wind 14. There are many available __________ power sources in Vietnam including sun, wind, water, etc. A. nuclear B. hydro C. renewable D. solar 15. Laos and Cambodia have big plans for building up to 11__________ on the lower Mekong. A. dams B. slogans C. energy D. coals