The effects of preharvest growth regulator spray on postharvest berry drop of grape were investigated.

The article analyses the cause of backward of 1500m race from match, body pattern, physical quality and training among the decathlon.

Consequently, the negative effects brought by backward education were presented in many aspects, such as the disorder of society, increasing criminals, backward agriculture production technique and obstinate and benighted social customs.

Some of these viewpoints are backward and blackguard but others are progressive.

On the Backwardness of the chinese Science and Technology in Modern Times;

Another source of modern China s technological backwardness is the characteristics of traditional science and technology;

Cause Analysis of Backwardness of Higher Vocational Education in Xinjiang;

The Cause of The Lag in China s Net Search and Countermeasures Against It;

The model of "lag-alteration" in novels of the liberation area was brightly incarnated imperative effect of revolutionary ideology.

There were some reasons why the empire had gone to decline as follow:founding a state by the military so as to its foundation being unstable; studying from the west being an action of catching up with and surpassing something equidistantly; culture and education lagging behind and lacking the delayed effe.