With the development of our state economy,CBA career-oriented reforms and the deepening of exchanges between foreign counterparts,Chinese cheerleading has made considerable progress,but compared with a high level foreign countries,there is a big gap existing in artistic accomplishments,psychological literacy,music harmony and action skills.

In order to enhance the teaching quality of inorganic chemistry experiment, we ask students to focus on the operating skills, to observe, take notes of, analyze and explain experiment phenomena exactly, and to sum up the changing laws of elements and compounds properties in the course of experiments.

For the sake of raising processing quality of numerically controlled lathe ,it is necessary to make rational selection of technology and to master the three operating skills of numerially controlled lathe:useing more points of a knife,compensating radius of tool and tool's tear.

Therefore, it is necessary to discuss the characteristics and presentation of the composition of visual recording and the operation techniques related to the composition of criminal visual recording.