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Warning: mysqli_fetch_assoc() expects parameter 1 to be mysqli_result, boolean given in D:\wwwroot\127.0.0.1\public\class\db.class.php on line 75 《可见的学习与思维教学让教学对学生可见让学习对教师可见》 - 【主内书店】：基督教网上书店,基督教书籍,主内书籍批发零售.
