THE LASER BEAM CAN REMOVE BONE , AND ……….. IT IS INVALUABLE IN EAR...

40.The laser beam can remove bone , and ……….. it is invaluable in ear surgeryA .when B. then C. so D. becausePHẦN 3: ĐỌC HIỂUA.Chọn một từ /cụm từ thích hợp cho mỗi chỗ trống trong đoạn văn dưới đây.Smoking causes lung cancer, heart disease , and breathing problems. Worldwide , about three million people die every year because of smoking – that ‘s about one (41) ……….. every ten seconds! In fact, smoking is the (42) ……….. of almost 20 percent of all deaths in the developed countries of the world. Smoking doesn’t just (43) ………..the smoker, it hurts other people , too. When a pregnant (44) ……….. smokes, she is hurting her developing (45) ……….. when a man (46) ……….. at home , his wife and children are also breathing in smoke and can become sick. Even though most people understand the (47) ……….. effects of smoking , they continue to smoke . The (48) ……….. of women and teenagers who smoke is increasing . cigarette companies make advertisements that (49) ……….. these groups of people so that they (50) ……….. to buy cigarettes.