题目内容
The strategy of combining grammar rules with ______ was adopted by many foreign language teachers in the 19th century.
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Although Krashen and Terrell claim that language is a ______ for communication, they consider language learning as mastery of structures by stages.
______ is particularly interested in the relationships between sentences and the contexts and situations in which they are used.
实验室观察某疗法对移植性肿瘤的疗效，以生存日数作为分析指标，实验组观察 10例，秩次和为170；对照组观察12例，秩次和为83。欲比较两组生存日数有无差别，进行秩和检验。 查表知双侧α=0.05，T界值为84～146；α=0.01，T界值为76～154，则统计结论为
患者男性，76岁，高血压30余年，平时血压在150～180/90～110mmHg，不规则服用降压药。2周来胸闷、气促，贫血貌，颈静脉怒张，心界向左下扩大，心率 104次/分，两肺底有细小湿哕音，肝肋下2指，下肢水肿中度，尿蛋白(+)，血肌酐 884μmol/L(10mg/dl)。 最适宜治疗为
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