mng giup minh voi a ----- Nội dung ảnh ----- III. READING A. Read and choose the word or phrase marked A, B, C or D that best fits the blank space. 31. A. noise 32. A. action 33. A. form 34. A. consisting 35. A. containing 36. A. crease 37. A. resident 38. A. relaxed 39. A. frequent 40. A. produce
B. Today, I'd like to begin a discussion on the relationship between fluorocarbons and the ozone layer. The protective shield around the Earth. It's important to realize that ozone itself, a form of oxygen, is regularly destroyed by these vehicles. Scientists suspect that the system of the heating up of the Earth...
