First of all, as China has stepped into the biggest country group that earns highest regard by its economic development, various vehicles are no doubt considered as the epitome of this prosperous achievement. but some negative impact has also brougt much influence on our day life. For example. some cars often run very fast on the roud or street without attention of traffic rule. In this case, both pedestrian and public workers walking or standing around those flying-rate machines would unfortunately face a sudden crash. Yet, it is still a good signal to warn people who have not had the deeepest comprehension when they are involved by threat from faster-rate cars, if there are enough educative information or noticement like that must comply with traffic rule, learn proper knowledge of public rescue etc.
Secondly, disease can be seen as one of the most dangerous factor which could change our life even horrible. For instance, several diseases such as cancer have deprived a lot of lives since medical treatment lost confidence facing incurable reality. So in order to cherish a sufficient living quality and colorful life, people ought to enhance their practice pace. Meanwhile, be that as it may, they also need to give the best medical care when facing the threat of disease.
The last but not the least, because some crime to personal property can even endanger of safety of its master. People also should learn some necessary skill or technique to take precaution of unexpected safe threat like pilferage, murder and violence etc.