| 小题1:cigars 小题2:produced quickly and cheaply 小题3:Income, education and occupation. 小题4:if a well-educated man with a higher income smokes 小题5:whose parent or parents smoke |
| 小题1:cigars 小题2:produced quickly and cheaply 小题3:Income, education and occupation. 小题4:if a well-educated man with a higher income smokes 小题5:whose parent or parents smoke |
