B. wrong
2. The main characteristics of "drugs" are their illegality, toxicity and drug dependence (addiction). (1)
A. Right
3. The sexual physiological development of adolescence is mainly manifested in the change of body shape (B)
B. wrong
4. The principle of a reasonable diet is to eat more potatoes, milk, beans or their products every day, eat lean meat every day, and eat a light and low-salt diet (A).
A. Right
5. In order to prevent intestinal infectious diseases, patients and suspected patients should be isolated until they are no longer infectious (A)
A. Right
6. Teenagers' physical exercise can effectively prevent and improve hypertension and coronary heart disease (1)
A. Right
7. The way to maintain self-confidence is to learn to evaluate yourself correctly, appreciate yourself, encourage yourself and hint at yourself (A).
A. Right
8. The harm of drugs is mainly harmful to one's own health and does not pose a threat to others and society. (2)
B. wrong
9. The key to prevent schistosomiasis is to prevent contact with infected water. (1)
A. Right
10. The process of human life includes growth, maturity and aging. (2)
B. wrong
1 1. Pay attention to personal hygiene and wash your hands with soap or hand sanitizer before and after meals and after going out (a)
A. Right
12. Iodized salt is not only the most important and basic means to prevent and treat iodine deficiency disorders in China, but also the most important and basic means in the world. (1)
A. Right
13. Tobacco mainly contains harmful substances such as nicotine and tar (A).
A. Right
14. The four cornerstones of keeping healthy are a balanced diet, moderate exercise, restriction of smoking and drinking, and mental health. (2)
B. wrong
15. Water is responsible for providing energy for human body (b)
B. wrong
16. The so-called "three tubes and one extinguishing" means managing water, feces, diet and flies. (1)
A. Right
17. Abuse of opioids will cause harm to human nervous system (1)
A. Right
18. Symptoms of severe heatstroke can be divided into four types: heat spasm, heat exhaustion, heatstroke and heatstroke. (1)
A. Right