{"common":{"save":0,"post_id":"6300","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"9793","post_id":"6300","mon_id":"1158739","chapter_id":"1158740","question":"<p>Trong các tr\u01b0\u1eddng h\u1ee3p sau \u0111ây v\u1eadt nào \u0111ang dao \u0111\u1ed9ng? Ch\u1ecdn câu tr\u1ea3 l\u1eddi \u0111úng nh\u1ea5t.<\/p>","options":["A. Cành cây \u0111u \u0111\u01b0a trong gió nh\u1eb9.","B. Gió nh\u1eb9 qu\u1ea3 l\u1eafc \u0111\u1ed3ng h\u1ed3 \u0111ang ch\u1ea1y.","C. M\u1eb7t tr\u1ed1ng rung lên khi ng\u01b0\u1eddi ta gõ vào nó.","D. Các v\u1eadt nêu trên \u0111\u1ec1u \u0111ang dao \u0111\u1ed9ng."],"correct":"4","level":"2","hint":"<p>Dao \u0111\u1ed9ng là s\u1ef1 chuy\u1ec3n \u0111\u1ed9ng qua l\u1ea1i quanh m\u1ed9t v\u1ecb trí cân b\u1eb1ng.<\/p>","answer":"<p><span style=\"color:#27ae60;\"><strong>A – Có s\u1ef1 dao \u0111\u1ed9ng.<br \/>B – Có s\u1ef1 dao \u0111\u1ed9ng.<br \/>C – Có s\u1ef1 dao \u0111\u1ed9ng.<br \/>\u0110áp án \u0111úng: D. Các v\u1eadt nêu trên \u0111\u1ec1u \u0111ang dao \u0111\u1ed9ng.<\/strong><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"147","test":"0","date":"2022-10-05 03:33:12","option_type":"txt","len":3},{"id":"9794","post_id":"6300","mon_id":"1158739","chapter_id":"1158740","question":"<p>\u1ede cùng m\u1ed9t nhi\u1ec7t \u0111\u1ed9, sóng âm lan truy\u1ec1n nhanh nh\u1ea5t trong môi tr\u01b0\u1eddng<\/p>","options":["A. không khí.","B. n\u01b0\u1edbc.","C. thép.","D. khí oxygen."],"correct":"3","level":"2","hint":"<p>- Âm truy\u1ec1n trong ch\u1ea5t r\u1eafn nhanh h\u01a1n trong ch\u1ea5t l\u1ecfng.<br \/>- Âm truy\u1ec1n trong ch\u1ea5t l\u1ecfng nhanh h\u01a1n trong ch\u1ea5t r\u1eafn.<\/p>","answer":"<p><span style=\"color:#27ae60;\"><strong>A – ch\u1ea5t khí.<br \/>B – ch\u1ea5t l\u1ecfng. <br \/>C – ch\u1ea5t r\u1eafn.<br \/>D – ch\u1ea5t khí.<br \/>\u1ede cùng m\u1ed9t nhi\u1ec7t \u0111\u1ed9, sóng âm lan truy\u1ec1n nhanh nh\u1ea5t trong môi tr\u01b0\u1eddng môi tr\u01b0\u1eddng ch\u1ea5t r\u1eafn nên C \u0111úng.<br \/>\u0110áp án \u0111úng: C. thép.<\/strong><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"147","test":"0","date":"2022-10-05 03:36:02","option_type":"txt","len":2},{"id":"9795","post_id":"6300","mon_id":"1158739","chapter_id":"1158740","question":"<p>Khi ong m\u1eadt bay s\u1ebd phát ra ti\u1ebfng vo ve. Ti\u1ebfng vo ve \u1ea5y \u0111\u01b0\u1ee3c phát ra t\u1eeb b\u1ed9 ph\u1eadn nào c\u1ee7a ong m\u1eadt?<\/p>","options":["A. Mi\u1ec7ng.","B. Chân.","C. Cánh.","D. B\u1ee5ng."],"correct":"3","level":"2","hint":"<p>Ngu\u1ed3n âm là ngu\u1ed3n phát ra âm, các ngu\u1ed3n âm \u0111\u1ec1u dao \u0111\u1ed9ng.<\/p>","answer":"<p><span style=\"color:#27ae60;\"><strong>C – dao \u0111\u1ed9ng nên phát ra âm.<br \/>A, B, D – không dao \u0111\u1ed9ng nên không phát ra âm.<br \/>\u0110áp án \u0111úng: C. Cánh.<\/strong><\/span><br \/> <\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"147","test":"0","date":"2022-10-05 03:37:24","option_type":"txt","len":1}]}
