Topic content:
From January 2011, the mainland of China will completely ban smoking in all indoor public places, indoor workplaces, public transport vehicles and other possible outdoor workplaces. From the perspective of human health, the following statements about smoking are inappropriate ()
A. Smoking can induce heart disease
B. The smoke contains carcinogens
C. Smoking is a sign of fashion
D. Carbon monoxide in smoke can poison people
Best answer:
A、 Long term smoking is prone to coronary heart disease, emphysema, lung cancer, etc. A large amount of smoking can lead to poisoning and death, so it is correct
B、 Cigarette smoke contains carbon monoxide, nicotine, tar containing benzopyrene, dioxin and other carcinogens, so it is correct
C、 Smoking is harmful to health. It is a bad habit. Smoking in public places is uncivilized, so it is wrong
D、 Cigarette smoke contains carbon monoxide, nicotine, tar containing carcinogens such as benzopyrene and dioxin. Carbon monoxide is toxic, so it is correct
Therefore, C
Answer analysis:
There is no explanation for this question
Test core:
The existence form of elements in human body:
① Carbon, hydrogen, oxygen and nitrogen mainly exist in the form of water, sugar, protein, vitamins and fat.
② Other elements mainly exist in aqueous solution in the form of inorganic salts.
③ Calcium element mainly exists in the form of hydroxycalcium phosphate [Ca10 (PO4) 6 (OH) 2] crystal.
