{"segment":[{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":10,"ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai10/lv3/img\/2.jpg' \/><\/center> N\u1ebfu hai tia Ox v\u00e0 Oy l\u00e0 hai tia \u0111\u1ed1i nhau th\u00ec:","select":["A. C\u00f3 duy nh\u1ea5t m\u1ed9t tia n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oy","B. Kh\u00f4ng c\u00f3 tia n\u00e0o n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oy","C. C\u00f3 hai tia n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oy","D. M\u1ecdi tia g\u1ed1c O kh\u00e1c Ox v\u00e0 Oy \u0111\u1ec1u n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oy"],"hint":"","explain":" <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>Ta c\u00f3: <br\/> N\u1ebfu hai tia Ox v\u00e0 Oy l\u00e0 hai tia \u0111\u1ed1i nhau th\u00ec <b>m\u1ecdi tia g\u1ed1c O kh\u00e1c Ox v\u00e0 Oy \u0111\u1ec1u n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oy<\/b><br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'>D. M\u1ecdi tia g\u1ed1c O kh\u00e1c Ox v\u00e0 Oy \u0111\u1ec1u n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oy<\/span><\/span> <br\/>","column":1}]}],"id_ques":2101},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00fang hay sai","title_trans":"","temp":"true_false","correct":[["f","f","f","t"]],"list":[{"point":10,"image":"","col_name":["","\u0110\u00fang","Sai"],"arr_ques":["Kh\u00f4ng c\u00f3 \u0111i\u1ec3m n\u00e0o \u0111\u1ed3ng th\u1eddi thu\u1ed9c hai n\u1eeda m\u1eb7t ph\u1eb3ng ","Ch\u1ec9 c\u00f3 \u0111\u00fang m\u1ed9t \u0111i\u1ec3m \u0111\u1ed3ng th\u1eddi thu\u1ed9c hai n\u1eeda m\u1eb7t ph\u1eb3ng","C\u00f3 \u0111\u00fang hai \u0111i\u1ec3m \u0111\u1ed3ng th\u1eddi thu\u1ed9c hai n\u1eeda m\u1eb7t ph\u1eb3ng","C\u00f3 v\u00f4 s\u1ed1 \u0111i\u1ec3m \u0111\u1ed3ng th\u1eddi thu\u1ed9c hai n\u1eeda m\u1eb7t ph\u1eb3ng"],"hint":"","explain":["Kh\u00f4ng c\u00f3 \u0111i\u1ec3m n\u00e0o \u0111\u1ed3ng th\u1eddi thu\u1ed9c hai n\u1eeda m\u1eb7t ph\u1eb3ng (Sai)","<br\/> Ch\u1ec9 c\u00f3 \u0111\u00fang m\u1ed9t \u0111i\u1ec3m \u0111\u1ed3ng th\u1eddi thu\u1ed9c hai n\u1eeda m\u1eb7t ph\u1eb3ng (Sai) ","<br\/> C\u00f3 \u0111\u00fang hai \u0111i\u1ec3m \u0111\u1ed3ng th\u1eddi thu\u1ed9c hai n\u1eeda m\u1eb7t ph\u1eb3ng (Sai) ","<br\/> C\u00f3 v\u00f4 s\u1ed1 \u0111i\u1ec3m \u0111\u1ed3ng th\u1eddi thu\u1ed9c hai n\u1eeda m\u1eb7t ph\u1eb3ng (\u0110\u00fang) "]}]}],"id_ques":2102},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t \u0111i\u1ec1n v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":10,"ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai10/lv3/img\/2.jpg' \/><\/center> Hai tia Ox v\u00e0 Oy \u0111\u1ed1i nhau th\u00ec c\u00f3 ............ n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oy","select":["A. duy nh\u1ea5t m\u1ed9t tia","B. hai tia","C. ba tia","D. v\u00f4 s\u1ed1 tia"],"hint":"","explain":" <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>Ta c\u00f3:<br\/>N\u1ebfu hai tia Ox v\u00e0 Oy l\u00e0 hai tia \u0111\u1ed1i nhau th\u00ec <b>m\u1ecdi tia g\u1ed1c O kh\u00e1c Ox v\u00e0 Oy \u0111\u1ec1u n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oy<br\/>N\u00ean c\u00f3 v\u00f4 s\u1ed1 tia n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oy<\/b><br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'>D. v\u00f4 s\u1ed1 tia<\/span><\/span> <br\/>","column":2}]}],"id_ques":2103},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t \u0111i\u1ec1n v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":10,"ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai10/lv3/img\/H21_D120.png' \/><\/center> Cho h\u00ecnh v\u1ebd nh\u01b0 tr\u00ean. C\u00e1ch g\u1ecdi t\u00ean c\u1ee7a n\u1eeda m\u1eb7t ph\u1eb3ng (I) l\u00e0:","select":["A. N\u1eeda m\u1eb7t ph\u1eb3ng b\u1edd a kh\u00f4ng ch\u1ee9a \u0111i\u1ec3m C","B. N\u1eeda m\u1eb7t ph\u1eb3ng b\u1edd a ch\u1ee9a \u0111i\u1ec3m A","C. N\u1eeda m\u1eb7t ph\u1eb3ng b\u1edd a ch\u1ee9a \u0111i\u1ec3m B","D. T\u1ea5t c\u1ea3 c\u00e1c \u0111\u00e1p \u00e1n tr\u00ean \u0111\u1ec1u \u0111\u00fang"],"hint":"","explain":" <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/><center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai10/lv3/img\/H21_D120.png' \/><\/center><br\/>C\u00e1ch g\u1ecdi t\u00ean c\u1ee7a n\u1eeda m\u1eb7t ph\u1eb3ng (I) l\u00e0: <br\/>+ N\u1eeda m\u1eb7t ph\u1eb3ng b\u1edd a kh\u00f4ng ch\u1ee9a \u0111i\u1ec3m C<br\/>+ N\u1eeda m\u1eb7t ph\u1eb3ng b\u1edd a ch\u1ee9a \u0111i\u1ec3m A<br\/>+ N\u1eeda m\u1eb7t ph\u1eb3ng b\u1edd a ch\u1ee9a \u0111i\u1ec3m B<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'>D. T\u1ea5t c\u1ea3 c\u00e1c \u0111\u00e1p \u00e1n tr\u00ean \u0111\u1ec1u \u0111\u00fang<\/span><\/span> <br\/>","column":1}]}],"id_ques":2104},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t \u0111i\u1ec1n v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"multiple_choice","correct":[[5]],"list":[{"point":10,"ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai10/lv3/img\/H21_K101.png' \/><\/center> Cho h\u00ecnh v\u1ebd nh\u01b0 tr\u00ean. C\u00e1ch g\u1ecdi t\u00ean c\u1ee7a n\u1eeda m\u1eb7t ph\u1eb3ng (I) l\u00e0:","select":["A. N\u1eeda m\u1eb7t ph\u1eb3ng b\u1edd a ch\u1ee9a \u0111i\u1ec3m M","B. N\u1eeda m\u1eb7t ph\u1eb3ng b\u1edd a kh\u00f4ng ch\u1ee9a \u0111i\u1ec3m P","C. N\u1eeda m\u1eb7t ph\u1eb3ng b\u1edd a kh\u00f4ng ch\u1ee9a \u0111i\u1ec3m Q","D. N\u1eeda m\u1eb7t ph\u1eb3ng b\u1edd a ch\u1ee9a \u0111i\u1ec3m N","E. T\u1ea5t c\u1ea3 c\u00e1c \u0111\u00e1p \u00e1n tr\u00ean \u0111\u1ec1u \u0111\u00fang"],"hint":"","explain":" <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/><center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai10/lv3/img\/H21_K101.png' \/><\/center><br\/>C\u00e1ch g\u1ecdi t\u00ean c\u1ee7a n\u1eeda m\u1eb7t ph\u1eb3ng (I) l\u00e0: <br\/>+ N\u1eeda m\u1eb7t ph\u1eb3ng b\u1edd a ch\u1ee9a \u0111i\u1ec3m M<br\/>+ N\u1eeda m\u1eb7t ph\u1eb3ng b\u1edd a ch\u1ee9a \u0111i\u1ec3m N<br\/>+ N\u1eeda m\u1eb7t ph\u1eb3ng b\u1edd a kh\u00f4ng ch\u1ee9a \u0111i\u1ec3m P<br\/>+ N\u1eeda m\u1eb7t ph\u1eb3ng b\u1edd a kh\u00f4ng ch\u1ee9a \u0111i\u1ec3m Q<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'>E. T\u1ea5t c\u1ea3 c\u00e1c \u0111\u00e1p \u00e1n tr\u00ean \u0111\u1ec1u \u0111\u00fang<\/span><\/span> <br\/>","column":1}]}],"id_ques":2105},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t \u0111i\u1ec1n v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":10,"ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai10/lv3/img\/2.jpg' \/><\/center> B\u1ea5t k\u00ec \u0111\u01b0\u1eddng th\u1eb3ng n\u00e0o n\u1eb1m tr\u00ean m\u1eb7t ph\u1eb3ng c\u0169ng l\u00e0 b\u1edd chung c\u1ee7a ............ ","select":["A. hai n\u1eeda m\u1eb7t ph\u1eb3ng","B. hai n\u1eeda m\u1eb7t ph\u1eb3ng \u0111\u1ed1i nhau","C. n\u1eeda m\u1eb7t ph\u1eb3ng","D. hai n\u1eeda m\u1eb7t ph\u1eb3ng c\u00f9ng ph\u00eda"],"hint":"","explain":" <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>Ta c\u00f3:<br\/>B\u1ea5t k\u00ec \u0111\u01b0\u1eddng th\u1eb3ng n\u00e0o n\u1eb1m tr\u00ean m\u1eb7t ph\u1eb3ng c\u0169ng l\u00e0 b\u1edd chung c\u1ee7a <b>hai n\u1eeda m\u1eb7t ph\u1eb3ng \u0111\u1ed1i nhau<\/b><br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'>B. hai n\u1eeda m\u1eb7t ph\u1eb3ng \u0111\u1ed1i nhau<\/span><\/span> <br\/>","column":2}]}],"id_ques":2106},{"time":14,"part":[{"title":"Ch\u1ecdn <u>nh\u1eefng<\/u> \u0111\u00e1p \u00e1n \u0111\u00fang","title_trans":"Ch\u1ecdn \u0111\u01b0\u1ee3c nhi\u1ec1u \u0111\u00e1p \u00e1n","temp":"checkbox","correct":[["1","2","4"]],"list":[{"point":10,"img":"","ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai10/lv3/img\/H21_K101.png' \/><\/center> Cho h\u00ecnh v\u1ebd nh\u01b0 tr\u00ean. Hai n\u1eeda m\u1eb7t ph\u1eb3ng \u0111\u1ed1i nhau l\u00e0:","hint":"","column":1,"number_true":3,"select":["A. N\u1eeda m\u1eb7t ph\u1eb3ng b\u1edd a ch\u1ee9a \u0111i\u1ec3m M v\u00e0 n\u1eeda m\u1eb7t ph\u1eb3ng b\u1edd a ch\u1ee9a \u0111i\u1ec3m P","B. N\u1eeda m\u1eb7t ph\u1eb3ng b\u1edd a ch\u1ee9a \u0111i\u1ec3m M v\u00e0 n\u1eeda m\u1eb7t ph\u1eb3ng b\u1edd a ch\u1ee9a \u0111i\u1ec3m Q","C. N\u1eeda m\u1eb7t ph\u1eb3ng b\u1edd a ch\u1ee9a \u0111i\u1ec3m M v\u00e0 n\u1eeda m\u1eb7t ph\u1eb3ng b\u1edd a ch\u1ee9a \u0111i\u1ec3m N","D. N\u1eeda m\u1eb7t ph\u1eb3ng b\u1edd a ch\u1ee9a \u0111i\u1ec3m N v\u00e0 n\u1eeda m\u1eb7t ph\u1eb3ng b\u1edd a ch\u1ee9a \u0111i\u1ec3m P"],"explain":"<span class='basic_left'><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/><center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai10/lv3/img\/H21_K101.png' \/><\/center><br\/>Hai n\u1eeda m\u1eb7t ph\u1eb3ng \u0111\u1ed1i nhau l\u00e0:<br\/>+ N\u1eeda m\u1eb7t ph\u1eb3ng b\u1edd a ch\u1ee9a \u0111i\u1ec3m M v\u00e0 n\u1eeda m\u1eb7t ph\u1eb3ng b\u1edd a ch\u1ee9a \u0111i\u1ec3m P<br\/>+ N\u1eeda m\u1eb7t ph\u1eb3ng b\u1edd a ch\u1ee9a \u0111i\u1ec3m M v\u00e0 n\u1eeda m\u1eb7t ph\u1eb3ng b\u1edd a ch\u1ee9a \u0111i\u1ec3m Q<br\/>+ N\u1eeda m\u1eb7t ph\u1eb3ng b\u1edd a ch\u1ee9a \u0111i\u1ec3m N v\u00e0 n\u1eeda m\u1eb7t ph\u1eb3ng b\u1edd a ch\u1ee9a \u0111i\u1ec3m P<br\/>+ N\u1eeda m\u1eb7t ph\u1eb3ng b\u1edd a ch\u1ee9a \u0111i\u1ec3m N v\u00e0 n\u1eeda m\u1eb7t ph\u1eb3ng b\u1edd a ch\u1ee9a \u0111i\u1ec3m Q<br\/>V\u1eady c\u00e1c \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'>A, B, D<\/span><\/span> <br\/><\/span>"}]}],"id_ques":2107},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":10,"ques":" Tr\u00ean \u0111\u01b0\u1eddng th\u1eb3ng a l\u1ea5y b\u1ed1n \u0111i\u1ec3m l\u1ea7n l\u01b0\u1ee3t theo th\u1ee9 t\u1ef1 l\u00e0: A, B, C, D. T\u1eeb \u0111i\u1ec3m O n\u1eb1m ngo\u00e0i \u0111\u01b0\u1eddng th\u1eb3ng a n\u1ed1i v\u1edbi c\u00e1c \u0111i\u1ec3m A, B, C, D. H\u00e3y ch\u1ec9 ra \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t? ","select":["A. Tia OB n\u1eb1m gi\u1eefa hai tia OA v\u00e0 OC","B. Tia OC n\u1eb1m gi\u1eefa hai tia OA v\u00e0 OD","C. Tia OC n\u1eb1m gi\u1eefa hai tia OB v\u00e0 OD","D. T\u1ea5t c\u1ea3 c\u00e1c \u0111\u00e1p \u00e1n tr\u00ean \u0111\u1ec1u \u0111\u00fang"],"hint":"","explain":" <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/><center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai10/lv3/img\/H21_K103.png' \/><\/center> Ta c\u00f3:<br\/>+ Tia OB c\u1eaft \u0111o\u1ea1n th\u1eb3ng AC v\u00e0 \u0111i\u1ec3m B n\u1eb1m gi\u1eefa hai \u0111i\u1ec3m A v\u00e0 C<br\/>$\\Rightarrow$ Tia OB n\u1eb1m gi\u1eefa hai tia OA v\u00e0 OC<br\/>+ Tia OC c\u1eaft \u0111o\u1ea1n th\u1eb3ng AD v\u00e0 \u0111i\u1ec3m C n\u1eb1m gi\u1eefa hai \u0111i\u1ec3m A v\u00e0 D<br\/>$\\Rightarrow$ Tia OC n\u1eb1m gi\u1eefa hai tia OA v\u00e0 OD<br\/>+ Tia OC c\u1eaft \u0111o\u1ea1n th\u1eb3ng BD v\u00e0 \u0111i\u1ec3m C n\u1eb1m gi\u1eefa hai \u0111i\u1ec3m B v\u00e0 D<br\/>$\\Rightarrow$ Tia OC n\u1eb1m gi\u1eefa hai tia OB v\u00e0 OD<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'>D. T\u1ea5t c\u1ea3 c\u00e1c \u0111\u00e1p \u00e1n tr\u00ean \u0111\u1ec1u \u0111\u00fang<\/span><\/span> <br\/>","column":2}]}],"id_ques":2108},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t \u0111i\u1ec1n v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":10,"ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai10/lv3/img\/H21_K101.png' \/><\/center> Hai \u0111i\u1ec3m M v\u00e0 N n\u1eb1m ............... \u0111\u1ed1i v\u1edbi v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng a. ","select":["A. c\u00f9ng ph\u00eda","B. kh\u00e1c ph\u00eda","C. tr\u00ean","D. trong"],"hint":"","explain":" <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/><center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai10/lv3/img\/H21_K101.png' \/><\/center>Ta c\u00f3:<br\/>Hai \u0111i\u1ec3m M v\u00e0 N n\u1eb1m <b>c\u00f9ng ph\u00eda<\/b> \u0111\u1ed1i v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng a<\/b><br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'>A. c\u00f9ng ph\u00eda<\/span><\/span> <br\/>","column":2}]}],"id_ques":2109},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t \u0111i\u1ec1n v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":10,"ques":" Cho tia Oy n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oz. Bi\u1ebft A $\\in$ Ox, B $\\in$ Oz. Tia Oy c\u1eaft \u0111o\u1ea1n th\u1eb3ng AB t\u1ea1i M <br\/>th\u00ec ..............................","select":["A. \u0111i\u1ec3m M n\u1eb1m gi\u1eefa hai \u0111i\u1ec3m A v\u00e0 B","B. \u0111i\u1ec3m A n\u1eb1m gi\u1eefa hai \u0111i\u1ec3m M v\u00e0 B","C. \u0111i\u1ec3m B n\u1eb1m gi\u1eefa hai \u0111i\u1ec3m A v\u00e0 M","D. T\u1ea5t c\u1ea3 c\u00e1c \u0111\u00e1p \u00e1n tr\u00ean \u0111\u1ec1u sai"],"hint":"","explain":" <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/><center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai10/lv3/img\/H21_K105.png' \/><\/center> Ta c\u00f3: A $\\in$ Ox, B $\\in$ Oz<br\/>Tia Oy c\u1eaft \u0111o\u1ea1n th\u1eb3ng AB t\u1ea1i M<br\/>M\u00e0 tia Oy n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oz<br\/>$\\Rightarrow$ \u0110i\u1ec3m M n\u1eb1m gi\u1eefa hai \u0111i\u1ec3m A v\u00e0 B<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'>A. \u0111i\u1ec3m M gi\u1eefa hai \u0111i\u1ec3m A v\u00e0 B<\/span><\/span> <br\/>","column":2}]}],"id_ques":2110}],"lesson":{"save":0,"level":3}}