This paper discusses a new field in chemistry study: the application of chemistry knowledge in the protection of cultural relics. The chemical principles and methods in the study of preservation and protection of cultural relics are introduced in details, concerning the conservation, exploration survey, identification and textual research etc.

Non-deadly weapon is developing into a kind of important materiel. At present, the non-deadly weapons are usually those that can carry out special military or non military purposes though can not cause death or mass death of people, can not cause serious destruction of facilities, and destroy environment to little extent. These non-deadly weapons have wide application prospect in high-tech local war and some special anti-terror actions or peacekeeping operations.

Mustard gas is an important military poison. It is considered that mustard gas is the most effective one of war fare agents. This paper briefly introduces the discovery and utilization, physical and chemical properties, toxicity, poisoning mechanism, poisoning symptom, prevention and cure of mustard gas poisoning.

The education of "self-conversation" emphasizes learners' functions of main body and initiative, which conforms to the ideas of new curriculum and the theory of constructivism. To implement the education of "self-conversation", teachers must pay attention to arousing learners' consciousness of "self-conversation" and fulfill the task by means of "self-knowing conversation " before learning, "generation conversation" while learning, and "reconsideration conversation" after learning.