C\u00e2u 1:<\/b>\u00a0B\u00e0i th\u01a1 c\u00f3 th\u1ec3 chia l\u00e0m 3 \u0111o\u1ea1n:<\/span><\/p>\n – \u0110o\u1ea1n 1 (13 c\u00e2u \u0111\u1ea7u): t\u00ecnh y\u00eau cu\u1ed9c s\u1ed1ng tr\u1ea7n th\u1ebf tha thi\u1ebft.<\/p>\n – \u0110o\u1ea1n 2 (c\u00e2u 14 – 29): b\u0103n kho\u0103n tr\u01b0\u1edbc gi\u1edbi h\u1ea1n c\u1ee7a cu\u1ed9c \u0111\u1eddi.<\/p>\n – \u0110o\u1ea1n 3 (\u0111o\u1ea1n c\u00f2n l\u1ea1i): h\u1ed1i h\u1ea3, cu\u1ed3ng nhi\u1ec7t \u0111\u1ebfn v\u1edbi cu\u1ed9c s\u1ed1ng.<\/p>\n C\u00e2u 2:<\/b>\u00a0C\u1ea3m nh\u1eadn v\u1ec1 th\u1eddi gian c\u00f9a Xu\u00e2n Di\u1ec7u \u0111\u01b0\u1ee3c n\u00f3i \u0111\u1ebfn trong 11 c\u00e2u th\u01a1 (c\u00e2u 14 – 24) mang \u00fd v\u1ecb tri\u1ebft l\u00ed nh\u00e2n sinh s\u00e2u s\u1eafc. C\u1ea3m nh\u1eadn v\u1ec1 th\u1eddi gian c\u1ee7a thi nh\u00e2n \u1edf \u0111\u00e2y g\u1eafn li\u1ec1n v\u1edbi m\u00f9a xu\u00e2n v\u00e0 tu\u1ed5i tr\u1ebb c\u1ee7a m\u1ed9t con ng\u01b0\u1eddi y\u00eau cu\u1ed9c s\u1ed1ng thi\u1ebft tha, say \u0111\u1eafm, n\u00ean mang n\u00e9t ri\u00eang c\u1ee7a Xu\u00e2n Di\u1ec7u r\u1ea5t r\u00f5.<\/span><\/p>\n a) Th\u1eddi gian v\u00e0 m\u00f9a xu\u00e2n<\/b><\/p>\n Xu\u00e2n Di\u1ec7u vi\u1ebft b\u00e0i th\u01a1 n\u00e0y khi m\u1edbi ngo\u00e0i hai m\u01b0\u01a1i tu\u1ed5i, ngh\u0129a l\u00e0 c\u00f2n r\u1ea5t tr\u1ebb. Ng\u01b0\u1eddi trai tr\u1ebb \u1ea5y ngh\u0129 v\u1ec1 m\u00f9a xu\u00e2n nh\u01b0 v\u1eady, m\u1edbi bi\u1ebft s\u1ee9c t\u00e0n ph\u00e1 c\u1ee7a th\u1eddi gian nh\u01b0 th\u1ebf n\u00e0o, v\u00e0 thi nh\u00e2n “s\u1ee3” th\u1eddi gian tr\u00f4i nhanh ra sao! \u1ede c\u00e1i tu\u1ed5i \u1ea5y, c\u00f3 l\u1ebd \u00edt ng\u01b0\u1eddi ngh\u0129 th\u1ebf, v\u00e0 nh\u1ea5t l\u00e0 vi\u1ebft nh\u01b0 th\u1ebf \u0111\u1ec3 gi\u00e3i b\u00e0y l\u00f2ng m\u00ecnh trong th\u01a1. Hai c\u00e2u tr\u00ean l\u00e0 \u0111\u1ed1i l\u1eadp (\u0111\u01b0\u01a1ng t\u1edbi \/ \u0111\u01b0\u01a1ng qua, c\u00f2n non \/ s\u1ebd gi\u00e0) \u0111\u1ec3 \u0111i \u0111\u1ebfn m\u1ed9t k\u1ebft lu\u1eadn kh\u1eb3ng \u0111\u1ecbnh v\u1ec1 s\u1ef1 \u0111\u1ed3ng nh\u1ea5t gi\u1eefa m\u00f9a xu\u00e2n v\u00e0 t\u00e1c gi\u1ea3 (con ng\u01b0\u1eddi):<\/p>\n M\u00f9a xu\u00e2n tr\u00f4i \u0111i th\u00ec cu\u1ed9c \u0111\u1eddi con ng\u01b0\u1eddi c\u0169ng ch\u1ea5m h\u1ebft. C\u1ea3m th\u1ee9c v\u1ec1 s\u1ef1 t\u00e0n ph\u00e1 c\u1ee7a th\u1eddi gian th\u1eadt m\u1ea1nh v\u00e0 s\u00e2u, \u0111\u01b0\u1ee3c n\u00e2ng l\u00ean nh\u01b0 m\u1ed9t tri\u1ebft l\u00ed nh\u00e2n sinh c\u1ee7a Xu\u00e2n Di\u1ec7u. M\u1ed9t con ng\u01b0\u1eddi b\u00ecnh th\u01b0\u1eddng kh\u00f4ng th\u1ec3 ngh\u0129 v\u1ec1 th\u1eddi gian, kh\u00f4ng gian “s\u1ee3” th\u1eddi gian tr\u00f4i nhanh \u0111\u1ebfn m\u1ee9c nh\u01b0 th\u1ebf. H\u1eb3n l\u00e0 trong \u00f4ng c\u00f3 ch\u1ee9a ch\u1ea5t bi k\u1ecbch c\u1ee7a nh\u00e0 th\u01a1 l\u00e3ng m\u1ea1n trong th\u00e2n ph\u1eadn m\u1ed9t thi nh\u00e2n m\u1ea5t n\u01b0\u1edbc l\u00fac b\u1ea5y gi\u1edd, hay ch\u00ednh v\u00ec \u00f4ng qu\u00e1 y\u00eau cu\u1ed9c s\u1ed1ng n\u1ed3ng nhi\u1ec7t v\u00e0 say \u0111\u1eafm m\u00e0 “s\u1ee3” th\u1eddi gian c\u01b0\u1edbp m\u1ea5t m\u00f9a xu\u00e2n c\u1ee7a m\u00ecnh.<\/p>\n C\u1ea3m nh\u1eadn v\u1ec1 th\u1eddi gian c\u1ee7a Xu\u00e2n Di\u1ec7u \u1edf \u0111\u00e2y, th\u1ef1c ra, suy cho c\u00f9ng, c\u0169ng ch\u00ednh l\u00e0 h\u1ec7 qu\u1ea3 t\u1ea5t y\u1ebfu ph\u1ea3i c\u00f3 c\u1ee7a l\u00f2ng y\u00eau \u0111\u1eddi, y\u00eau cu\u1ed9c s\u1ed1ng c\u1ee7a \u00f4ng.<\/p>\n b) Th\u1eddi gian v\u00e0 tu\u1ed5i tr\u1ebb<\/b><\/p>\n Th\u1eddi gian c\u01b0\u1edbp \u0111i m\u00f9a xu\u00e2n c\u0169ng c\u00f3 ngh\u0129a l\u00e0 c\u01b0\u1edbp m\u1ea5t tu\u1ed5i tr\u1ebb c\u1ee7a nh\u00e0 th\u01a1. \u0110\u00e2y ch\u00ednh l\u00e0 n\u1ed7i x\u00f3t \u0111au v\u00e0 lo l\u1eafng nh\u1ea5t c\u1ee7a Xu\u00e2n Di\u1ec7u. B\u1edfi ch\u00ednh \u00f4ng l\u00e0 con ng\u01b0\u1eddi tr\u00e2n tr\u1ecdng tu\u1ed5i tr\u1ebb nh\u1ea5t v\u00e0 lo s\u1ee3 th\u1eddi gian tr\u00f4i nhanh th\u00ec tu\u1ed3i tr\u1ebb s\u1ebd kh\u00f4ng c\u00f2n n\u1eefa. \u0110i\u1ec1u \u0111\u00f3 \u0111\u01b0\u1ee3c \u00f4ng b\u1ed9c l\u1ed9 th\u1eadt ch\u00e2n th\u00e0nh, tha thi\u1ebft:<\/p>\n L\u00e0m sao cu\u1ed9c \u0111\u1eddi con ng\u01b0\u1eddi l\u1ea1i c\u00f3 hai l\u1ea7n “tu\u1ed5i tr\u1ebb”? V\u00e0 khi th\u1eddi gian \u0111\u00e3 tr\u00f4i nhanh th\u00ec li\u1ec7u tu\u1ed5i tr\u1ebb c\u00f3 c\u00f2n? Nh\u01b0 v\u1eady, “xu\u00e2n v\u1eabn tu\u1ea7n ho\u00e0n” th\u00ec cu\u1ed9c s\u1ed1ng c\u00f2n c\u00f3 \u00fd ngh\u0129a g\u00ec khi tu\u1ed5i tr\u1ebb \u0111\u00e3 h\u1ebft? V\u1edbi Xu\u00e2n Di\u1ec7u, c\u00e1i qu\u00fd nh\u1ea5t cua \u0111\u1eddi ng\u01b0\u1eddi l\u00e0 tu\u1ed5i tr\u1ebb, tu\u1ed5i tr\u1ebb l\u00e0 \u0111\u1eb9p nh\u1ea5t, cu\u1ed9c s\u1ed1ng th\u1eddi tu\u1ed5i tr\u1ebb l\u00e0 h\u1ea1nh ph\u00fac nh\u1ea5t, \u0111\u00e1ng s\u1ed1ng nh\u1ea5t. V\u00e0 \u0111i\u1ec1u \u00f4ng lo s\u1ee3 nh\u00e2t l\u00e0 m\u1ea5t \u0111i c\u00e1i th\u1eddi qu\u00fd gi\u00e1 \u1ea5y c\u1ee7a cu\u1ed9c s\u1ed1ng con ng\u01b0\u1eddi. N\u1ebfu kh\u00f4ng c\u00f2n tu\u1ed5i tr\u1ebb th\u00ec cu\u1ed9c s\u1ed1ng con ng\u01b0\u1eddi c\u00f9ng ch\u1eb3ng c\u00f2n \u00fd ngh\u0129a:<\/p>\n Qua c\u1ea3m nh\u1eadn v\u1ec1 th\u1eddi gian – c\u0169ng l\u00e0 qua n\u1ed7i b\u0103n kho\u0103n c\u1ee7a Xu\u00e2n Di\u1ec7u tr\u01b0\u1edbc cu\u1ed9c \u0111\u1eddi, ta th\u1ea5y hi\u1ec7n l\u00ean c\u00e1i \u0111\u1eb9p nh\u1ea5t, h\u1ea5p d\u1eabn nh\u1ea5t tr\u00ean c\u00f5i \u0111\u1eddi m\u00e0 nh\u00e0 th\u01a1 khao kh\u00e1t. \u0110\u00f3 l\u00e0 t\u00ecnh y\u00eau m\u00f9a xu\u00e2n, y\u00eau tu\u1ed5i tr\u1ebb, y\u00eau cu\u1ed9c \u0111\u1eddi tha thi\u1ebft nh\u01b0 mu\u1ed1n s\u1ed1ng m\u00e3i trong tu\u1ed5i tr\u1ebb, trong m\u00f9a xu\u00e2n c\u1ee7a cu\u1ed9c \u0111\u1eddi.<\/p>\n C\u00e2u 3:<\/b>\u00a0Ch\u00ednh v\u00ec y\u00eau tha thi\u1ebft cu\u1ed9c s\u1ed1ng \u0111\u1eddi th\u01b0\u1eddng quanh m\u00ecnh, Xu\u00e2n Di\u1ec7u \u0111\u00e3 ph\u00e1t hi\u1ec7n ra trong cu\u1ed9c s\u1ed1ng \u0111\u00f3 nh\u1eefng n\u00e9t \u0111\u1eb9p th\u1eadt tinh t\u1ebf,\u0111\u00e1ng y\u00eau, gi\u00e0u ch\u1ea5t th\u01a1 nh\u01b0 \u0111\u00e3 ph\u00e2n t\u00edch tr\u00ean \u0111\u00e2y.<\/span><\/p>\n – Xu\u00e2n Di\u1ec7u y\u00eau tu\u1ed5i tr\u1ebb v\u00e0 bi\u1ebft qu\u00fd tu\u1ed5i tr\u1ebb c\u1ee7a m\u00ecnh b\u1edfi \u0111\u00e2y l\u00e0 kho\u1ea3ng th\u1eddi gian \u0111\u1eb9p v\u00e0 \u0111\u00e1ng s\u1ed1ng nh\u1ea5t, c\u00f3 nhi\u1ec1u h\u1ea1nh ph\u00fac nh\u1ea5t c\u1ee7a cu\u1ed9c \u0111\u1eddi m\u1ed9t con ng\u01b0\u1eddi (xem ph\u00e2n t\u00edch c\u00e2u 2).<\/p>\n – Xu\u00e2n Di\u1ec7u quan ni\u1ec7m h\u1ea1nh ph\u00fac kh\u00f4ng \u1edf \u0111\u00e2u xa (ho\u1eb7c \u1edf m\u1ed9t c\u00f5i kh\u00e1c) m\u00e0 \u0111\u00f3 ch\u00ednh l\u00e0 h\u1ea1nh ph\u00fac \u1edf quanh ta, l\u00e0 s\u1ef1 s\u1ed1ng quen thu\u1ed9c c\u1ee7a tr\u1ea7n th\u1ebf. H\u1ea1nh ph\u00fac khi \u0111\u01b0\u1ee3c c\u1ea3m nh\u1eadn m\u1ed9t b\u1ee9c tranh thi\u00ean nhi\u00ean \u0111\u1eb9p c\u1ee7a hoa l\u00e1 \u0111\u1ed3ng n\u1ed9i, c\u1ee7a ong b\u01b0\u1edbm, chim ch\u00f3c; \u0111\u01b0\u1ee3c s\u1ed1ng trong m\u1ed9t “Th\u00e1ng gi\u00eang ngon nh\u01b0 m\u1ed9t c\u1eb7p m\u00f4i g\u1ea7n<\/i>“… V\u00ec v\u1eady, ph\u1ea3i bi\u1ebft gi\u1eef l\u1ea5y h\u1ea1nh ph\u00fac, gi\u1eef l\u1ea1i nh\u1eefng v\u1ebb \u0111\u1eb9p c\u1ee7a cu\u1ed9c s\u1ed1ng cho m\u00ecnh b\u1eb1ng nh\u1eefng \u00fd t\u01b0\u1edfng th\u1eadt t\u00e1o b\u1ea1o:<\/p>\n V\u00e0 ch\u00ednh v\u00ec th\u1ebf, nh\u00e0 th\u01a1 \u0111\u0103 c\u00f3 m\u1ed9t c\u00e1ch s\u1ed1ng\u00a0v\u1ed9i v\u00e0ng<\/i>\u00a0\u0111\u1ec3 t\u1eadn h\u01b0\u1edfng h\u1ea1nh ph\u00fac c\u1ee7a tu\u1ed5i tr\u1ebb, c\u1ee7a m\u00f9a xu\u00e2n nh\u01b0 nhan \u0111\u1ec1 b\u00e0i th\u01a1 m\u00e0 \u00f4ng \u0111\u00e3 b\u00e0y t\u1ecf n\u1ed7i l\u00f2ng.<\/p>\n C\u00e2u 4:<\/b>\u00a0\u0110o\u1ea1n cu\u1ed1i b\u00e0i th\u01a1:<\/span><\/p>\nXu<\/span>\u00e2<\/span>n <\/span>\u0111\u01b0\u01a1<\/span>ng t<\/span>\u1edb<\/span>i<\/span>,<\/span> ngh<\/span>\u0129<\/span>a l<\/span>\u00e0<\/span> xu<\/span>\u00e2<\/span>n <\/span>\u0111\u01b0\u01a1<\/span>ng qua<\/span>,<\/span>\r\nXu<\/span>\u00e2<\/span>n c<\/span>\u00f2<\/span>n non<\/span>,<\/span> ngh<\/span>\u0129<\/span>a l<\/span>\u00e0<\/span> xu<\/span>\u00e2<\/span>n <\/span>\u0111\u00e3<\/span> gi<\/span>\u00e0,<\/span><\/i>\r\n<\/pre>\n
M<\/span>\u00e0<\/span> xu<\/span>\u00e2<\/span>n h<\/span>\u1ebf<\/span>t<\/span>,<\/span> ngh<\/span>\u0129<\/span>a l<\/span>\u00e0<\/span> t<\/span>\u00f4<\/span>i c<\/span>\u0169<\/span>ng m<\/span>\u1ea5<\/span>t<\/span>.<\/span><\/i>\r\n<\/pre>\n
L<\/span>\u00f2<\/span>ng t<\/span>\u00f4<\/span>i r<\/span>\u1ed9<\/span>ng<\/span>,<\/span> nh<\/span>\u01b0<\/span>ng l<\/span>\u01b0\u1ee3<\/span>ng tr<\/span>\u1edd<\/span>i c<\/span>\u1ee9<\/span> ch<\/span>\u1ead<\/span>t<\/span>,<\/span>\r\nKh<\/span>\u00f4<\/span>ng cho d<\/span>\u00e0<\/span>i th<\/span>\u1edd<\/span>i tr<\/span>\u1ebb<\/span> c<\/span>\u1ee7<\/span>a nh<\/span>\u00e2<\/span>n gian<\/span>,<\/span>\r\nN<\/span>\u00f3<\/span>i l<\/span>\u00e0<\/span>m chi r<\/span>\u1eb1<\/span>ng xu<\/span>\u00e2<\/span>n v<\/span>\u1eab<\/span>n tu<\/span>\u1ea7<\/span>n ho<\/span>\u00e0<\/span>n<\/span>,<\/span>\r\nN<\/span>\u1ebf<\/span>u tu<\/span>\u1ed5<\/span>i tr<\/span>\u1ebb<\/span> ch<\/span>\u1eb3<\/span>ng hai l<\/span>\u1ea7<\/span>n th<\/span>\u1eaf<\/span>m l<\/span>\u1ea1<\/span>i<\/span>!<\/span><\/i>\r\n<\/pre>\n
C<\/span>\u00f2<\/span>n tr<\/span>\u1edd<\/span>i <\/span>\u0111\u1ea5<\/span>t<\/span>,<\/span> nh<\/span>\u01b0<\/span>ng ch<\/span>\u1eb3<\/span>ng c<\/span>\u00f2<\/span>n t<\/span>\u00f4<\/span>i m<\/span>\u00e3<\/span>i<\/span>,<\/span>\r\nN<\/span>\u00ea<\/span>n b<\/span>\u00e2<\/span>ng khu<\/span>\u00e2<\/span>ng t<\/span>\u00f4<\/span>i ti<\/span>\u1ebf<\/span>c c<\/span>\u1ea3<\/span> \u0111\u1ea5<\/span>t tr<\/span>\u1edd<\/span>i<\/span>;<\/span>\r\nM<\/span>\u00f9<\/span>i th<\/span>\u00e1<\/span>ng n<\/span>\u0103<\/span>m <\/span>\u0111\u1ec1<\/span>u r<\/span>\u1edb<\/span>m v<\/span>\u1ecb<\/span> chia ph<\/span>\u00f4<\/span>i<\/span>,<\/span>\r\nKh<\/span>\u1eaf<\/span>p s<\/span>\u00f4<\/span>ng n<\/span>\u00fa<\/span>i v<\/span>\u1eab<\/span>n than th<\/span>\u1ea7<\/span>m ti<\/span>\u1ec5<\/span>n bi<\/span>\u1ec7<\/span>t <\/span>...<\/span><\/i>\r\n<\/pre>\n
T<\/span>\u00f4<\/span>i mu<\/span>\u1ed1<\/span>n t<\/span>\u1eaf<\/span>t n<\/span>\u1eaf<\/span>ng di\r\n<\/span>Cho<\/span> m<\/span>\u00e0<\/span>u <\/span>\u0111\u1eeb<\/span>ng nh<\/span>\u1ea1<\/span>t<\/span>,<\/span> m<\/span>\u1ea5<\/span>t<\/span>;<\/span>\r\nT<\/span>\u00f4<\/span>i mu<\/span>\u1ed1<\/span>n bu<\/span>\u1ed9<\/span>c gi<\/span>\u00f3<\/span> l<\/span>\u1ea1<\/span>i\r\n<\/span>Cho<\/span> h<\/span>\u01b0\u01a1<\/span>ng d<\/span>\u1eeb<\/span>ng bay <\/span>\u0111<\/span>i<\/span>.<\/span><\/i>\r\n<\/pre>\n