Lấy 4 ví dụ và viết phương trình về chuyển hoá các chất trong tự nhiên xác định chất khử và chất oxi hoá

write a paragraph about vietnam then and now

5 đến 7 dòng 

1.      A. treat                          B. heat                                 C. beat                                 D. sweater

2.      A. quiet                         B. littered                            C. plastics                           D. bridge

3.      A. cities                         B. countries                        C. babies                             D. flies

4.      A. reused                      B. returned                         C. mashed                          D. cleaned

5.      A. stand                        B. badly                              C. sandy                              D. many

6.      A. throw                        B. though                            C. thrilling                          D. through

7.      A. watched                   B. matched                         C. washed                          D. returned

8.      A. sandcastle              B. entrance                         C. understand                    D. banyan

9.      A. should                      B. shout                               C. about                              D. amount

10.  A. shop                         B. problem                         C. top                                  D. glove

Choose the word whose underlined part is pronounced differently from the others 

1.      A. Average                   B. wave                               C. pavement                       D. engage

2.      A. system                  B. specify                                C. unscrew                         D. insurance

3.      A. washed                    B. considered                     C. booked                           D. hoped

4.      A. stream                      B. leather                            C. cream                              D. dream

5.      A. intermediate           B. immediate                      C. medium                         D. medicine

6.      A. bury                          B. hurry                               C. hungry                           D. thunder

7.      A. planted                    B. worked                           C. wanted                           D. needed

8.      A. beach                        B. clean                               C. instead                           D. leave

9.      A. informed                  B. impressed                      C. installed                         D. admired

10.  A. planet                       B. fashion                            C. travel                              D. nature

11.  A. hut                            B. done                                C. donate                            D. tunnel

12.  A. chemistry                B. mechanic                        C. character                        D. parachute