People in all parts of the world are observing "No Tobacco Day". It is the day ___11___ the World Health Organization (WHO) appeals to people to stop using tobacco products. WHO hopes if people stop smoking cigarettes or ___12___ tobacco for one day, they will stop permanently. Health experts have warned for years that smoking can lead to heart disease, cancer and other ___13___ .WHO says diseases linked to smoking kill ___14___ 2,500,000 persons each year. Still, many people find it ___15___ stopping smoking. One reason is nicotine, a substance found in cigarettes. Nicotine is a drug. Its effects are ___16___ those of cocaine and heroin. "No Tobacco Day" is intended for smokers and ___17___ who earn money from tobacco sales. So businesses are urged to stop selling tobacco products for twenty-four hours. ___18___ are urged not to carry advertisements for cigarettes. WHO has approved plans to help reach its ___19___ of a "smoke-free" world. They urge governments to take action to help ___20___ make money by growing other crops. They also call for improved public information campaigns about the risks of smoking. 11题选()