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背诵是最扎实有效的教学——《〈离骚〉节选》教学的有效路径
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作者 吴金昌 《语文教学之友》 2019年第2期16-18,共3页
背诵是语文学习最有效的方法,有效指导学生背诵要扫清文字障碍、理清作者思路、反复诵读课文、展示背诵成果。
关键词 背诵 文言文教学 有效路径
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Synthesis and Anti-HIV Activity of Triazolo-fused 3 ',4'-Cyclic and 4'-Spiro Nucleoside Analogues
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作者 SUN Jing-bo LIU Rong-wang +2 位作者 XUAN Li-li LENG Wei-chun wu jin-chang 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2013年第3期473-476,共4页
Triazolo-fused 3',4'-cyclic nucleoside 4'-spiro nucleoside analogues were synthesized by an intramolecular 1,3-dipolar cycloaddition of 4'-azido nucleoside derived azido-alkynes in a regio- and stereo-specific man... Triazolo-fused 3',4'-cyclic nucleoside 4'-spiro nucleoside analogues were synthesized by an intramolecular 1,3-dipolar cycloaddition of 4'-azido nucleoside derived azido-alkynes in a regio- and stereo-specific manner. The thy- mine nucleoside base in these target compounds was transformed into the corresponding 5-methyl cytosine component. The synthesized compounds were examined in an MAGI(multinuclear-activation galactosidase indicator) assay for exploring the anti-HIV activity and in a H9 T(human T lymphocytes Hg) assay for measuring the cell toxicity. 展开更多
关键词 4'-Spiro nucleoside 3' 4'-fused nucleoside Biological activity 1 3-Dipolar cycloaddition
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