----- Nội dung dịch tự động từ ảnh ----- 7. The can be controlled by the stoppage of leakage from the radioactive materials including the nuclear reactors, industries and laboratories. B.visual pollution C.air pollution D.radioactive A.light pollution pollution 8. English is A.native language language 9. Australia has the biggest A.natural beauty of Australia and Singapore. B.both A and C C.official language D.second in the world. B.puzzling games could possibly be avoided by better construction, safety systems, early warning and planning. C.cattle station D.tallest building 10. A.Earthquakes B.mudslide C.droughts D.forest fire