1.How to prevent the person from catching cold ?- Drink more water and eat more fruit in rich of Vitamin C.(多喝水，多吃富含维生素C的水果。) 2.What is the normal of blood pressure ?- 80mmHG-120mmHG. （80毫米汞柱-120毫米汞柱。）3.How to take the blood pressure ?- You can use a Sphygmomanometer. (你可以用血压计。)4.What is the normal body temperature? - 36.5 degree Celcius . (36.5摄氏度。)
