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课堂教学是课程改革的主阵地,而打造课堂教学的高效性,是课改最基本的要求。传统的历史课堂教学模式,因为缺乏鲜活的教学素材,不能激发学生的学习兴趣,导致很多学生不喜欢历史课。本文阐述中学特别是农村中学如何开发和利用好身边的素材,让历史课生动起来,从而激发学生的学习兴趣。 相似文献
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Objective: To study the relationship between cholecystolithiasis and polypoid gallbladder(PLG), 260 patients with polypoid
gallbladder were investigated. The patients were divided into 2 groups: group A (PLG combined with cholecystolithiasis) and
group B (without cholecystolithiasis). The clinical pathological characteristics were analyzed. The intestinal epithelium
metaplasia and atypical hyperplasia of the gallbladder mucosa were observed under light microscope. Results: Intestinal epithelium
metaplasia and atypical hyperplasia of gallbladder mucosa were found in 47 of the 260 cases. The pathological lesions included
16 gallbladder carcinoma, 11 adenomatosis polyp, 5 myoadenoma, 7 cholesterol polyp, 4 inflammatory polyp and 4 adenomatosis
hyperplasia, which occurred in 26 and 21 patients in group A and group B, i. e. 44.0% and 10.3% respectively. The difference
between group A and group B was statistically significant (P<0.01). Conclusion: Cholecystolithiasis and the succeeding inflammatory reaction is a risk-factor for the polypoid gallbladder
to develop tumour.
Project (No. 2002ZXO19) supported by the Zhejiang Province Health Bureau, China 相似文献
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INTRODUCTIONThetermpolypoidgallbladder(PLG)isusedgenericallytodescribeanymucosalprojectionintothelumen .Itmaybeclassifiedaseithernon neoplasticlesions,whichcomprise 95 %ofallgallbladderpolyps,orneoplasticlesions,ofwhichadenomascomprisethevastmajority .Anu… 相似文献
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