{"segment":[{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":10,"ques":"Ch\u1ecdn t\u1eeb th\u00edch h\u1ee3p \u0111\u1ec3 \u0111i\u1ec1n v\u00e0o ch\u1ed7 tr\u1ed1ng:<br\/>Khi co l\u1ea1i v\u00ec nhi\u1ec7t, n\u1ebfu b\u1ecb ... thanh th\u00e9p c\u00f3 th\u1ec3 g\u00e2y ra l\u1ef1c r\u1ea5t l\u1edbn.","select":["A. ng\u0103n c\u1ea3n","B. kh\u00e1c nhau nhi\u1ec1u","C. kh\u00e1c nhau \u00edt","D. l\u1ef1c t\u00e1c d\u1ee5ng"],"hint":"","explain":"<span class='basic_left'>Khi co l\u1ea1i v\u00ec nhi\u1ec7t, n\u1ebfu b\u1ecb ng\u0103n c\u1ea3n thanh th\u00e9p c\u00f3 th\u1ec3 g\u00e2y ra l\u1ef1c r\u1ea5t l\u1edbn.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":2471},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":10,"ques":"Ba c\u1ed1c thu\u1ef7 tinh gi\u1ed1ng nhau, ban \u0111\u1ea7u c\u1ed1c A \u0111\u1ef1ng n\u01b0\u1edbc \u0111\u00e1, c\u1ed1c B \u0111\u1ef1ng n\u01b0\u1edbc ngu\u1ed9i (\u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng), c\u1ed1c C \u0111\u1ef1ng n\u01b0\u1edbc n\u00f3ng. \u0110\u1ed5 h\u1ebft n\u01b0\u1edbc v\u00e0 r\u00f3t n\u01b0\u1edbc s\u00f4i v\u00e0o c\u1ea3 ba c\u1ed1c. C\u1ed1c n\u00e0o d\u1ec5 v\u1ee1 nh\u1ea5t?","select":["A. C\u1ed1c A d\u1ec5 v\u1ee1 nh\u1ea5t","B. C\u1ed1c B d\u1ec5 v\u1ee1 nh\u1ea5t ","C. C\u1ed1c C d\u1ec5 v\u1ee1 nh\u1ea5t ","D. Kh\u00f4ng c\u00f3 c\u1ed1c n\u00e0o d\u1ec5 v\u1ee1"],"hint":"","explain":"<span class='basic_left'>C\u1ed1c A d\u1ec5 v\u1ee1 nh\u1ea5t v\u00ec ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 l\u00e0 l\u1edbn nh\u1ea5t v\u00ec c\u1ed1c A \u0111ang \u0111\u1ef1ng n\u01b0\u1edbc \u0111\u00e1 l\u1ea1i b\u1ecb cho n\u01b0\u1edbc n\u00f3ng v\u00e0o.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":2472},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":10,"ques":"B\u0103ng k\u00e9p \u0111ang th\u1eb3ng. N\u1ebfu l\u00e0m cho l\u1ea1nh \u0111i th\u00ec n\u00f3 b\u1ecb cong v\u1ec1 ph\u00eda thanh th\u00e9p hay thanh \u0111\u1ed3ng? T\u1ea1i sao?","select":["A. Cong v\u1ec1 ph\u00eda thanh \u0111\u1ed3ng v\u00ec \u0111\u1ed3ng co v\u00ec nhi\u1ec7t \u00edt h\u01a1n thanh th\u00e9p. ","B. Cong v\u1ec1 ph\u00eda thanh \u0111\u1ed3ng v\u00ec \u0111\u1ed3ng co v\u00ec nhi\u1ec7t nhi\u1ec1u h\u01a1n thanh th\u00e9p.","C. Cong v\u1ec1 ph\u00eda thanh \u0111\u1ed3ng v\u00ec \u0111\u1ed3ng n\u1edf v\u00ec nhi\u1ec7t nhi\u1ec1u h\u01a1n thanh th\u00e9p.","D. Cong v\u1ec1 ph\u00eda thanh th\u00e9p v\u00ec \u0111\u1ed3ng co v\u00ec nhi\u1ec7t nhi\u1ec1u h\u01a1n thanh th\u00e9p."],"hint":"","explain":"<span class='basic_left'>Cong v\u1ec1 ph\u00eda thanh \u0111\u1ed3ng v\u00ec \u0111\u1ed3ng co v\u00ec nhi\u1ec7t nhi\u1ec1u h\u01a1n thanh th\u00e9p.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":2473},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":10,"ques":"T\u1ea1i sao g\u1ea1ch l\u00e1t \u1edf v\u1ec9a h\u00e8 c\u00f3 kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c vi\u00ean g\u1ea1ch l\u1edbn h\u01a1n so v\u1edbi c\u00e1c vi\u00ean g\u1ea1ch \u0111\u01b0\u1ee3c l\u00e1t trong nh\u00e0?","select":["A. V\u00ec l\u00e1t nh\u01b0 th\u1ebf l\u00e0 r\u1ea5t l\u1ee3i g\u1ea1ch","B. V\u00ec l\u00e1t nh\u01b0 th\u1ebf m\u1edbi h\u1ee3p v\u1edbi m\u1ef9 quan th\u00e0nh ph\u1ed1","C. V\u00ec ngo\u00e0i tr\u1eddi th\u1eddi ti\u1ebft r\u1ea5t n\u00f3ng, ph\u1ea3i ch\u1eeba kho\u1ea3ng c\u00e1ch \u0111\u1ec3 c\u00f3 s\u1ef1 gi\u00e3n n\u1edf gi\u1eefa c\u00e1c vi\u00ean g\u1ea1ch","D. C\u00e1c ph\u01b0\u01a1ng \u00e1n \u0111\u01b0a ra \u0111\u1ec1u \u0111\u00fang."],"hint":"","explain":"<span class='basic_left'>V\u00ec ngo\u00e0i tr\u1eddi th\u1eddi ti\u1ebft r\u1ea5t n\u00f3ng, ph\u1ea3i ch\u1eeba kho\u1ea3ng c\u00e1ch \u0111\u1ec3 c\u00f3 s\u1ef1 gi\u00e3n n\u1edf gi\u1eefa c\u00e1c vi\u00ean g\u1ea1ch n\u00ean ph\u1ea3i l\u00e0m v\u1eady.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2474},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":10,"ques":"C\u00f3 nh\u1eadn x\u00e9t g\u00ec v\u1ec1 m\u1ed1i quan h\u1ec7 gi\u1eefa \u0111\u1ed9 d\u00e0y c\u1ee7a c\u1ed1c th\u1ee7y tinh v\u00e0 \u0111\u1ed9 b\u1ec1n c\u1ee7a c\u1ed1c? ","select":["A. Kh\u00f4ng c\u00f3 m\u1ed1i quan h\u1ec7 g\u00ec gi\u1eefa \u0111\u1ed9 b\u1ec1n c\u1ee7a c\u1ed1c v\u00e0 \u0111\u1ed9 d\u00e0y c\u1ee7a th\u1ee7y tinh l\u00e0m c\u1ed1c.","B. C\u1ed1c th\u1ee7y tinh m\u1ecfng b\u1ec1n h\u01a1n c\u1ed1c th\u1ee7y tinh d\u00e0y v\u00ec s\u1ef1 d\u00e3n n\u1edf v\u00ec nhi\u1ec7t \u1edf m\u1eb7t trong v\u00e0 m\u1eb7t ngo\u00e0i c\u1ee7a c\u1ed1c x\u1ea3y ra g\u1ea7n nh\u01b0 c\u00f9ng m\u1ed9t l\u00fac.","C. Hai c\u1ed1c b\u1ec1n nh\u01b0 nhau v\u00ec c\u00f9ng c\u00f3 \u0111\u1ed9 gi\u00e3n n\u1edf v\u00ec nhi\u1ec7t nh\u01b0 nhau.","D. C\u1ed1c th\u1ee7y tinh d\u00e0y b\u1ec1n h\u01a1n c\u1ed1c th\u1ee7y tinh m\u1ecfng v\u00ec \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb nhi\u1ec1u th\u1ee7y tinh h\u01a1n."],"hint":"","explain":"<span class='basic_left'>C\u1ed1c th\u1ee7y tinh m\u1ecfng b\u1ec1n h\u01a1n c\u1ed1c th\u1ee7y tinh d\u00e0y v\u00ec s\u1ef1 d\u00e3n n\u1edf v\u00ec nhi\u1ec7t \u1edf m\u1eb7t trong v\u00e0 m\u1eb7t ngo\u00e0i c\u1ee7a c\u1ed1c x\u1ea3y ra g\u1ea7n nh\u01b0 c\u00f9ng m\u1ed9t l\u00fac n\u00ean tr\u00e1nh bi\u1ebfn d\u1ea1ng \u0111\u1ed9t ng\u1ed9t, ko l\u00e0m v\u1ee1 c\u1ed1c.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":2475},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":10,"ques":"Khi l\u1eafp kh\u00e2u v\u00e0o c\u00e1n dao, ng\u01b0\u1eddi th\u1ee3 r\u00e8n ph\u1ea3i nung n\u00f3ng kh\u00e2u r\u1ed3i m\u1edbi tra v\u00ec:","select":["A. Chu vi kh\u00e2u l\u1edbn h\u01a1n chu vi c\u00e1n dao.","B. Chu vi kh\u00e2u nh\u1ecf h\u01a1n chu vi c\u00e1n dao.","C. Kh\u00e2u co d\u00e3n v\u00ec nhi\u1ec7t.","D. M\u1ed9t l\u00ed do kh\u00e1c."],"hint":"","explain":"<span class='basic_left'>\u0110\u1ec3 khi kh\u00e2u ngu\u1ed9i \u0111i, n\u00f3 s\u1ebd co l\u1ea1i b\u00f3 ch\u1eb7t v\u00e0o c\u00e1n dao.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2476},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":10,"ques":"V\u00ec sao m\u00e1i t\u00f4n l\u1ea1i c\u00f3 h\u00ecnh l\u01b0\u1ee3n s\u00f3ng?","select":["A. V\u00ec t\u00ednh th\u1ea9m m\u1ef9, th\u1eeba v\u1eadt li\u1ec7u","B. V\u1eeba c\u00f3 t\u00ednh th\u1ea9m m\u1ef9 v\u1eeba ch\u1ecbu \u0111\u01b0\u1ee3c co d\u00e3n nhi\u1ec7t do m\u00e1i t\u00f4n ti\u1ebfp x\u00fac tr\u1ef1c ti\u1ebfp v\u1edbi nhi\u1ec7t t\u1eeb b\u00ean ngo\u00e0i m\u00f4i tr\u01b0\u1eddng nh\u01b0 m\u1eb7t tr\u1eddi, \u2026","C. V\u00ec m\u01b0a \u0111\u1ee1 \u0111\u1ecdng n\u01b0\u1edbc","D. C\u1ea3 A, B, C \u0111\u1ec1u sai"],"hint":"","explain":"<span class='basic_left'>\u0110\u00f3 l\u00e0 l\u00fd do ch\u00ednh m\u00e0 ng\u01b0\u1eddi ta l\u00e0m v\u1eady. Gi\u00fap m\u00e1i t\u00f4n ch\u1ecbu \u0111\u01b0\u1ee3c co d\u00e3n nhi\u1ec7t do m\u00e1i t\u00f4n ti\u1ebfp x\u00fac tr\u1ef1c ti\u1ebfp v\u1edbi nhi\u1ec7t t\u1eeb b\u00ean ngo\u00e0i m\u00f4i tr\u01b0\u1eddng nh\u01b0 m\u1eb7t tr\u1eddi.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":2477},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":10,"ques":"T\u1ea1i sao khi ta r\u00f3t n\u01b0\u1edbc n\u00f3ng ra kh\u1ecfi ph\u00edch n\u01b0\u1edbc (b\u00ecnh th\u1ee7y), r\u1ed3i \u0111\u1eady n\u00fat l\u1ea1i ngay th\u00ec n\u00fat hay b\u1ecb b\u1eadt ra?","select":["A. Do ta \u0111\u1eady n\u00fat ch\u01b0a ch\u1eb7t","B. Do n\u01b0\u1edbc n\u00f3ng n\u00ean n\u1edf ra \u0111\u1ea9y n\u1eafp ra","C. Do khi r\u00f3t n\u01b0\u1edbc n\u00f3ng ra kh\u1ecfi ph\u00edch n\u01b0\u1edbc th\u00ec kh\u00f4ng kh\u00ed \u1edf ngo\u00e0i tr\u00e0n v\u00e0o ph\u00edch g\u1eb7p n\u01b0\u1edbc n\u00f3ng, kh\u00f4ng kh\u00ed n\u1edf ra n\u00ean \u0111\u1ea9y n\u00fat b\u1eadt ra","D. C\u1ea3 3 \u0111\u00e1p \u00e1n \u0111\u1ec1u sai"],"hint":"","explain":"<span class='basic_left'><br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2478},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":10,"ques":"Khi ta r\u00f3t n\u01b0\u1edbc n\u00f3ng ra kh\u1ecfi ph\u00edch n\u01b0\u1edbc (b\u00ecnh th\u1ee7y), r\u1ed3i \u0111\u1eady n\u00fat l\u1ea1i ngay th\u00ec n\u00fat hay b\u1ecb b\u1eadt ra, l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 tr\u00e1nh hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y?","select":["A. Thay n\u00fat th\u00e0nh n\u00fat to h\u01a1n","B. R\u00f3t \u00edt n\u01b0\u1edbc \u0111\u1ec3 kh\u1ecfi tr\u00e0n","C. Khi ta r\u00f3t n\u01b0\u1edbc xong th\u00ec \u0111\u1ec3 m\u1ed9t l\u00e1t r\u1ed3i m\u1edbi \u0111\u1eady l\u1ea1i l\u00fac \u0111\u00f3 kh\u00f4ng kh\u00ed l\u1ea1nh tr\u00e0n v\u00e0o g\u1eb7p n\u00f3ng n\u1edf ra bay l\u00ean b\u1edbt th\u00ec \u0111\u1eady n\u00fat kh\u00f4ng b\u1ecb b\u1eadt ra n\u1eefa","D. C\u1ea3 3 \u0111\u00e1p \u00e1n \u0111\u1ec1u sai"],"hint":"","explain":"<span class='basic_left'><br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2479},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":10,"ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/vatly/bai21/lv2/img\/h0.jpg'\/><\/center>\u0110\u1ec3 gh\u00e9p ch\u1eb7t hai t\u1ea5m kim lo\u1ea1i v\u00e0o nhau ng\u01b0\u1eddi ta th\u01b0\u1eddng d\u00f9ng ph\u01b0\u01a1ng ph\u00e1p t\u00e1n riv\u00ea. Nung n\u00f3ng \u0111\u1ecf \u0111inh riv\u00ea r\u1ed3i \u0111\u1eb7t nhanh v\u00e0o l\u1ed7 xuy\u00ean qua hai t\u1ea5m kim lo\u1ea1i. D\u00f9ng b\u00faa t\u00e1n \u0111\u1ea7u riv\u00ea c\u00f2n l\u1ea1i cho b\u1eb9t ra. Khi ngu\u1ed9i, \u0111inh riv\u00ea s\u1ebd xi\u1ebft ch\u1eb7t hai t\u1ea5m kim lo\u1ea1i (h\u00ecnh tr\u00ean). H\u00e3y gi\u1ea3i th\u00edch t\u1ea1i sao?","select":["A. Do \u0111\u1ea7u kia \u0111\u1eadp b\u1eb9p r\u1ed3i n\u00ean kh\u00f4ng ra \u0111\u01b0\u1ee3c n\u1eefa","B. Nung n\u00f3ng \u0111\u1ecf riv\u00ea th\u00ec riv\u00ea n\u1edf d\u00e0i ra v\u00e0 m\u1ec1m ra. D\u00f9ng riv\u00ea t\u00e1n \u0111\u1ea7u c\u00f2n l\u1ea1i cho b\u1eb9t ra. Khi ngu\u1ed9i \u0111inh riv\u00ea co l\u1ea1i, gi\u1eef ch\u1eb7t hai t\u1ea5m kim lo\u1ea1i","C. Do khi nung n\u00f3ng l\u00e0m l\u1ed7 to ra, khi l\u1ea1nh co l\u1ed7 l\u1ea1i n\u00ean ch\u1eb7t","D. C\u1ea3 3 \u0111\u00e1p \u00e1n \u0111\u1ec1u sai"],"hint":"","explain":"<span class='basic_left'>Khi ngu\u1ed9i \u0111inh riv\u00ea co l\u1ea1i, gi\u1eef ch\u1eb7t hai t\u1ea5m kim lo\u1ea1i.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":2480}],"lesson":{"save":0,"level":2}}