Why can the content of harmful components in secondhand smoke be several times or even dozens of times higher than that in direct smoke?
选项:
A:Because some people smoke in enclosed spaces.
B:Because the chemicals in tobacco can cause cancer.
C:Because insufficient combustion makes secondhand smoke more toxic than the direct smoke.
D:Because there are more non-smokers than smokers.
发布时间:2024-06-24 11:31:32