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Deprecated: sha1(): Passing null to parameter #1 ($string) of type string is deprecated in /www/wwwroot/test.zuweb.solutions/index.php on line 2 社会科の発問 If―thenでどう変わるか 社会科の発問: If-thenでどう変わるか (授業への挑戦 122) | 岡崎 誠司