internal cause
5.Based on Freudian theory of id, ego, superego, as well as the connection of internal cause and external cause from Marxist dialectical materialism point of view, this thesis attempts to analyze the various reasons for the adolescent depression of Esther, the protagonist of The Bell Jar (who is also the embodiment of Plath).
6.Hypertrophic scar or keloid is common in clinic and the inception rate get higher and higher. It is not all clear for the internal cause and mechanism of scar formation. Most people go in harmony in present that scars are fibroblast cytosis and collagen fibers deposition in the scar tissue,but lack of dependable and valid treatment methods,and can not solve scar intrinsic problem of prevention and treatment.
7.If one farmer gave Malta the pig 1978,fed the remains of a meal that comes from airlines of epidemic disease region to go up, cause African swine fever to erupt, affect inside a month 304 pig farm, come on the pig amounts to ⒉ 50 thousand, to control this disease, malta authorities the whole nation live pig of 70 thousand bull is all butcher, the loss amounts to 5 million pound, the whole nation already did not have a vivid pig at that time, initiated internal cause of limits of a state the introduction of a kind of contagion and make the precedent of a kind of rasorial become extinct.


