{"common":{"save":0,"post_id":"4751","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"7776","post_id":"4751","mon_id":"1158149","chapter_id":"1158153","question":"<p>\u0110\u01a1n v\u1ecb \u0111o \u0111\u1ed9 dài th\u01b0\u1eddng dùng là \u0111\u01a1n v\u1ecb gì?<\/p>","options":["ºC, K","<span>cm<sup>3<\/sup>, m<sup>3<\/sup><\/span>","<span> cm, dm, m, km<\/span>","<span> kg, t\u1ea5n, t\u1ea1, y\u1ebfn<\/span>"],"correct":"3","level":"2","hint":"","answer":"<p>\u0110\u01a1n v\u1ecb \u0111o \u0111\u1ed9 dài th\u01b0\u1eddng dùng là<span style=\"color:#16a085;\"><strong> cm, dm, m, km<\/strong><\/span><\/p><p>Ví d\u1ee5: Chi\u1ebfc bút bi dài 15 cm; Cái c\u1eeda s\u1ed5 cao 1 m; Quãng \u0111\u01b0\u1eddng t\u1eeb nhà em \u0111\u1ebfn tr\u01b0\u1eddng là 3 km.<\/p><p>(<strong>ºC, K<\/strong> là \u0111\u01a1n v\u1ecb \u0111o nhi\u1ec7t \u0111\u1ed9; <strong>cm3, m3 <\/strong>là \u0111\u01a1n v\u1ecb \u0111o th\u1ec3 tích; <strong>kg, t\u1ea5n, t\u1ea1, y\u1ebfn<\/strong> là là \u0111\u01a1n v\u1ecb \u0111o kh\u1ed1i l\u01b0\u1ee3ng.)<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"139","test":"1","date":"2021-09-29 01:32:01","option_type":"txt","len":2},{"id":"7777","post_id":"4751","mon_id":"1158149","chapter_id":"1158153","question":"<p>Khi \u0111o \u0111\u1ed9 dài ng\u01b0\u1eddi ta dùng d\u1ee5ng c\u1ee5 gì?<\/p>","options":["<strong>A.<\/strong> Cân","<span><strong>B.<\/strong> Nhi\u1ec7t k\u1ebf<\/span>","<span><strong>C.<\/strong> Bình chia \u0111\u1ed9<\/span>","<span><strong>D. <\/strong>Th\u01b0\u1edbc \u0111o \u0111\u1ed9 dài<\/span>"],"correct":"4","level":"2","hint":"","answer":"<p>\u0110áp án \u0111úng là: <span style=\"color:#16a085;\"><strong>D. Th\u01b0\u1edbc \u0111o \u0111\u1ed9 dài<\/strong><\/span><\/p><p>(Cân là d\u1ee5ng c\u1ee5 \u0111\u1ec3 \u0111o kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a v\u1eadt; <span>Nhi\u1ec7t k\u1ebf dùng \u0111\u1ec3 \u0111o nhi\u1ec7t \u0111\u1ed9;<\/span> Bình chia \u0111\u1ed9 là dùng \u0111\u1ec3 \u0111o th\u1ec3 tích ch\u1ea5t l\u1ecfng;)<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"139","test":"1","date":"2021-09-29 01:48:03","option_type":"txt","len":2},{"id":"7778","post_id":"4751","mon_id":"1158149","chapter_id":"1158153","question":"<p>\u0110\u1ed9 chia nh\u1ecf nh\u1ea5t c\u1ee7a th\u01b0\u1edbc là gì?<\/p>","options":["A. Giá tr\u1ecb cu\u1ed1i cùng ghi trên th\u01b0\u1edbc ","B. Giá tr\u1ecb nh\u1ecf nh\u1ea5t ghi trên th\u01b0\u1edbc","C. \u0110\u1ed9 dài 2 v\u1ea1ch chia liên ti\u1ebfp ","D. Giá tr\u1ecb l\u1edbn nh\u1ea5t ghi trên th\u01b0\u1edbc"],"correct":"3","level":"2","hint":"","answer":"<p>\u0110áp án \u0111úng là: <span style=\"color:#16a085;\"><strong>C. \u0110\u1ed9 dài 2 v\u1ea1ch chia liên ti\u1ebfp <\/strong><\/span><\/p><p>Khái ni\u1ec7m \u0111\u1ed9 chia nh\u1ecf nh\u1ea5t c\u1ee7a th\u01b0\u1edbc (\u0110CNN) là \u0111\u1ed9 dài gi\u1eefa hai v\u1ea1ch chia liên ti\u1ebfp trên th\u01b0\u1edbc.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"139","test":"1","date":"2021-09-29 01:53:37","option_type":"txt","len":3}]}
