Nêu nhận định của em về sản lượng và giá thành khi sản xuất Oxi trong phòng thí nghiệm và trong công nghiệp.

I.Find the word which has a different sound in the underlined part.

      1.   A. hydroelectric          B. environment           C. solar                 D. biogas

      2.   A. pleasure                  B. feed                        C. heat           D. meat

      3.   A. plentiful                  B. electric                    C. renewable     D. energy

      4.   A. few                         B. knew                       C. new           D. sew

      5.   A. nuclear                    B. truck                       C. abundant          D. dump

IV. Put the verbs in brackets in the correct tense forms to complete the sentences.

      1.   I ... (study) at 8.00 tomorrow.

      2.   You ... (wait) for her when her plane arrives tonight?

      3.   Don’t phone me between 7 and 8. We ... (have) dinner then.

      4.   What clothes do you think she ... (wear) when she arrives?

      5.   I ... (send) in my application tomorrow.

      6.   Linda ... (arrive) in Ha Noi around March.

      7.   Next week at this time, you ... (lie) on the beach.

      8.   My uncle can’t come to your party tomorrow night because he ... (work) at night.

      9.   You ... (meet) your former teachers at 9 a.m. tomorrow morning, won’t you?

      10. At this time tomorrow evening, I ... (play) computer games in my bedroom.

III.Choose the best one (A, B, C or D) to complete the sentence or replace the underlined word.

      1.   Nuclear energy is ... , but it is dangerous.

            A. renewable        B. non-renewable    C. natural resource   D. fossil fuel

      2.   Fossil fuels are very common in our society but they ... the environment.

            A. waste                      B. pollute                    C. renew               D. provide

      3.   All the houses in our village will be ... by solar energy.

            A. frozen                     B. widened                 C. heated       D. heightened

      4.   Several governments try to ... the use of fossil fuels.

            A. waste                      B. save                        C. reduce         D. increase

      5.   At this time next week, we ... a wind turbine in our garden.

            A. will installed           B. will be installing     C. install               D. installed

      6.   Low energy light bulbs should be used to ... electricity.

            A. convert                   B. save                        C. spend                  D. buy

      7.   It is a good idea to use ... when travelling long distances.

            A. private cars             B. public transport      C. cars                     D. taxis

      8.   “Why is it called a ... source?” - “Because it can be replaced easily and quickly.”

            A. renewable               B. non-renewable        C. effective          D. specific

      9.   We must ... the amount of water our family use every day.

            A. lessen                      B. narrow                    C. lower               D. reduce

      10. Wave energy is a source of ... energy.

            A. environmental friendly                           B. environmentally friendliness

            C. environment friendly                                 D. environmentally friendly

      11. Alternative sources of energy ... developed in the near future.

            A. has been                 B. will be                    C. is                          D. was

      12. She ... cooking in the kitchen at 7 PM tomorrow.

            A. will                         B. is                             C. will be                    D. be

      13. Some new energy-saving bulbs ... in the dining room.

            A. will be put           B. will put be           C. will put        D. will be putting

      14. What should we do to ... electricity?

            A. take                        B. save                        C. cut                      D. waste

      15. The wind, the sun, and the wave are some types of ... sources of energy.

I.Find the word which has a different sound in the underlined part.

      1.   A. hydroelectric          B. environment           C. solar                  D. biogas

      2.   A. pleasure                  B. feed                        C. heat                  D. meat

      3.   A. plentiful                  B. electric                    C. renewable         D. energy

      4.   A. few                         B. knew                       C. new                    D. sew

      5.   A. nuclear                    B. truck                       C. abundant           D. dump

Find the word which has a different sound in the underlined part.

      1.   A. wants                      B. helps                   C. plays                    D. looks

      2.   A. transport                 B. power                  C. report                   D. short

      3.   A. listened                   B. enjoyed               C. decided               D. played

      4.   A. many                      B. carbon                  C. large                     D. hard

      5.   A. blood                      B. spoon                      C. noon                    D. tool