Giusp em với nha mng có 10 câu trắc nghiệm thôi à!!!! Giups em nha đừng spam em * Find the word which has a different sound in the part underlined. ( k có dấu gạch chân nên em thay bằng dấu ngoặc ạ ) 1. A. tr(u)ck B. ab(u)ndant C. n(u)clear D. d(u)mp * Answer the questions from 2 to 10. Choose the best answers. 2. The wind, the sun, and the wave are some types of ____ sources of energy. A. changeable B. alternative C. cheap D. costly 3. Fossil fuels are very common in our society but they ______ the environment. A. renew B. provide C. waste D. pollute 4. “Why is it called a _____ source?” – “Because it can be replaced easily and quickly.” A. effective B. specific C. renewable D. non-renewable 5. Hydro power is _______ because dams cannot be built in certain areas. A. limited B. unlimited C. abundant D. enough 6. Biogas is ____________ and cheap for cooking and heating. A. plenty B. abundant C. serious D. expensive 7. We should put ___________ on our roof for the heating and hot water. A. solar energy B. equipment C. cracks D. solar panels 8. What should we do to ____________ electricity? A. cut B. take C. save D. waste 9. We are looking for cheap, clean and ____________ sources of energy. A. effective B. efficient C. serious D. dangerous 10. Wave energy is a source of ____________energy. A. environment friendly B. environmental friendly C. environmentally friendly D. environmentally friendliness