小题1:B
小题1:B
小题1:C
小题1:A
小题1:C
小题1:根据The doctor said that his 10 years of smoking had caused the disease. 可知选B。
小题1:根据The 24-year-old young man lost his right leg because of a blood disease. The doctor said that his 10 years of smoking 24-10=14，故选B。
小题1:根据Those who live in big cities started even earlier.及上文描述可知选C。
小题1:根据Zhang Li lies in bed sadly. The 24-year-old young man lost his right leg 可知选A。
小题1:根据If a person starts smoking as a teenager, he or she may live twenty-two years less than non-smokers.及上文描述可知这个单词是指不吸烟者，故选C。