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正在社会快速发展的现在,素质教育深入人心,人们对素质教育的重视程度越来越高。在小学教育中,小学语文作为学生学习其他学科的工具以及其具备的沟通、交流的功能,使语文的学习体现了其重要性。在语文教学中,教师不仅要让学生对语文学习产生兴趣,还要使他们能把学到的语文知识和方法运用 相似文献
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The long-arm and short-arm genes of fibroin light chain (L-chain) of silkworm, Bombyx Mori L., and the gene of human acidic fibroblast growth factor were cloned respectively and subsequently inserted into a transfer vector pVL1392 used as a tool to target the L-chain region of the silkworm genome. Genomic DNA from their offsprings was extracted and the expected targeting was detected using polymerase chain reaction and DNA sequencing, as well as protein analysis. The results showed that positive events occurred and that the FGF gene was integrated into the L-chain locus through homologous recombination. 相似文献
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INTRODUCTION Transgenic technology developed over the 20years, has become a common tool widely applied tolivestock species because it is technically quitesimple, requiring only the injection of ‘naked’DNA into the nucleus of a fertilized eggs (Hammeret al., 1985; Suraokar and Bradley, 2000). Howeverthis technique has limitations in that the injectedDNA integrates randomly into the genome and thuscould not be expressed in the desired tissue or at theappropriate level. More impor… 相似文献
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我上过这样一节汉语拼音课：老师津津有味地教学生念儿歌：＂j,q,x,三兄弟,和ü相拼把点儿去。＂＂小ü小ü真有礼貌,见到j,q,x就摘帽。＂念完儿歌,我请几位同学到黑板槽内取出卡片：j,q,x,ü。手持j,q,x卡片的同学对大家说：＂请小ü和我来拼音,摘了帽子才允许。” 相似文献
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