Trong \u0111\u1ec1 thi THPT Qu\u1ed1c gia m\u00f4n \u0110\u1ecba l\u00fd\u00a0c\u00e2u h\u1ecfi v\u1ebd bi\u1ec3u \u0111\u1ed3 lu\u00f4n chi\u1ebfm kho\u1ea3ng 3 \u0111i\u1ec3m. Tuy nhi\u00ean khi \u0111\u1ecdc \u0111\u1ec1 nhi\u1ec1u b\u1ea1n kh\u00f4ng x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c \u0111\u01b0\u1ee3c d\u1ea1ng bi\u1ec3u \u0111\u1ed3 c\u1ea7n v\u1ebd d\u1eabn \u0111\u1ebfn t\u00ecnh tr\u1ea1ng v\u1ebd sai l\u00e0m m\u1ea5t ho\u00e0n to\u00e0n \u0111i\u1ec3m \u1edf c\u00e2u h\u1ecfi n\u00e0y.<\/p>\n
D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 d\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft \u0111\u1ec3 c\u00f3 c\u00e1ch l\u1ef1a ch\u1ecdn bi\u1ec3u \u0111\u1ed3 ph\u00f9 h\u1ee3p v\u00e0 ch\u00ednh x\u00e1c nh\u1ea5t cho t\u1eebng d\u1ea1ng c\u00e2u h\u1ecfi:<\/p>\n
1. Bi\u1ec3u \u0111\u1ed3 tr\u00f2n<\/strong><\/p>\n Th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng khi \u0111\u1ec1 y\u00eau c\u1ea7u v\u1ebd bi\u1ec3u \u0111\u1ed3 m\u00f4 t\u1ea3 c\u01a1 c\u1ea5u, t\u1ec9 l\u1ec7 c\u00e1c th\u00e0nh ph\u1ea7n trong m\u1ed9t t\u1ed5ng th\u1ec3. \u0110\u1ed3ng th\u1eddi v\u1ebd bi\u1ec3u \u0111\u1ed3 tr\u00f2n khi b\u1ea3ng s\u1ed1 li\u1ec7u t\u1ec9 l\u1ec7 % c\u1ed9ng l\u1ea1i b\u1eb1ng 100. B\u1ea3ng s\u1ed1 li\u1ec7u c\u00f3 th\u1ec3 l\u00e0 s\u1ed1 tuy\u1ec7t \u0111\u1ed1i nh\u01b0ng trong c\u00e2u h\u1ecfi c\u00f3 m\u1ed9t trong c\u00e1c ch\u1eef: t\u1ec9 l\u1ec7, t\u1ec9 tr\u1ecdng, c\u01a1 c\u1ea5u, k\u1ebft c\u1ea5u (ph\u1ea3i x\u1eed l\u00fd b\u1ea3ng s\u1ed1 li\u1ec7u sang s\u1ed1 li\u1ec7u t\u01b0\u01a1ng \u0111\u1ed1i). B\u1ea1n c\u0169ng c\u00f3 th\u1ec3 \u0111\u1ec3 \u00fd n\u1ebfu \u0111\u1ec1 ra cho nhi\u1ec1u th\u00e0nh ph\u1ea7n \u0111\u1ec3 th\u1ec3 hi\u1ec7n trong 1 ho\u1eb7c 2 m\u1ed1c n\u0103m th\u00ec ph\u1ea3i l\u1ef1a ch\u1ecdn bi\u1ec3u \u0111\u1ed3 tr\u00f2n. H\u00e3y lu\u00f4n nh\u1edb ch\u1ecdn bi\u1ec3u \u0111\u1ed3 tr\u00f2n khi \u201c\u00edt n\u0103m, nhi\u1ec1u th\u00e0nh ph\u1ea7n\u201d.<\/p>\n <\/a><\/p>\n 2. Bi\u1ec3u \u0111\u1ed3 mi\u1ec1n<\/strong><\/p>\n N\u00ean l\u1ef1a ch\u1ecdn bi\u1ec3u \u0111\u1ed3 mi\u1ec1n khi c\u1ea7n th\u1ec3 hi\u1ec7n c\u01a1 c\u1ea5u t\u1ec9 l\u1ec7, v\u00ed d\u1ee5 t\u1ef7 l\u1ec7 xu\u1ea5t v\u00e0 nh\u1eadp, c\u00e1n c\u00e2n xu\u1ea5t nh\u1eadp kh\u1ea9u, t\u1ef7 l\u1ec7 sinh t\u1eed\u2026 C\u1ea7n l\u01b0u \u00fd n\u1ebfu kh\u00f4ng s\u1ebd r\u1ea5t d\u1ec5 nh\u1ea7m v\u1edbi bi\u1ec3u \u0111\u1ed3 tr\u00f2n. \u0110\u1ec3 x\u00e1c \u0111\u1ecbnh v\u1ebd bi\u1ec3u \u0111\u1ed3 mi\u1ec1n, v\u1edbi s\u1ed1 li\u1ec7u \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n tr\u00ean 3 n\u0103m (ngh\u0129a l\u00e0 vi\u1ec7c v\u1ebd t\u1edbi 4 h\u00ecnh tr\u00f2n nh\u01b0 th\u00f4ng th\u01b0\u1eddng th\u00ec ta l\u1ea1i chuy\u1ec3n sang bi\u1ec3u \u0111\u1ed3 mi\u1ec1n). V\u1eady s\u1ed1 li\u1ec7u \u0111\u00e3 cho tr\u00ean 3 n\u0103m m\u00e0 th\u1ec3 hi\u1ec7n v\u1ec1 c\u01a1 c\u1ea5u th\u00ec n\u00ean v\u1ebd bi\u1ec3u \u0111\u1ed3 mi\u1ec1n.<\/p>\n <\/a>3. Bi\u1ec3u \u0111\u1ed3 h\u00ecnh c\u1ed9t<\/strong><\/p>\n D\u1ea1ng bi\u1ec3u \u0111\u1ed3\u00a0n\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 bi\u1ec3u hi\u1ec7n \u0111\u1ed9ng th\u00e1i ph\u00e1t tri\u1ec3n, so s\u00e1nh t\u01b0\u01a1ng quan v\u1ec1 \u0111\u1ed9 l\u1edbn gi\u1eefa c\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng ho\u1eb7c th\u1ec3 hi\u1ec7n c\u01a1 c\u1ea5u th\u00e0nh ph\u1ea7n c\u1ee7a m\u1ed9t t\u1ed5ng th\u1ec3. V\u00ed d\u1ee5: V\u1ebd bi\u1ec3u \u0111\u1ed3 so s\u00e1nh d\u00e2n s\u1ed1 , di\u1ec7n t\u00edch \u2026c\u1ee7a 1 s\u1ed1 t\u1ec9nh (v\u00f9ng , n\u01b0\u1edbc )ho\u1eb7c v\u1ebd bi\u1ec3u \u0111\u1ed3 so s\u00e1nh s\u1ea3n l\u01b0\u1ee3ng (l\u00faa , ng\u00f4 , \u0111i\u1ec7n , than\u2026) c\u1ee7a 1 s\u1ed1 \u0111\u1ecba ph\u01b0\u01a1ng qua 1 s\u1ed1 n\u0103m.<\/p>\n C\u00e1c ki\u1ec3u bi\u1ec3u \u0111\u1ed3 c\u1ed9t g\u1ed3m: c\u1ed9t \u0111\u01a1n, c\u1ed9t gh\u00e9p, c\u1ed9t ch\u1ed3ng, c\u1ed9t 100%.<\/p>\n <\/a><\/p>\n 4. D\u1ea1ng bi\u1ec3u \u0111\u1ed3 \u0111\u01b0\u1eddng (\u0111\u1ed3 th\u1ecb)<\/strong><\/p>\n L\u00e0 lo\u1ea1i bi\u1ec3u \u0111\u1ed3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 th\u1ec3 hi\u1ec7n ti\u1ebfn tr\u00ecnh, \u0111\u1ed9ng th\u00e1i ph\u00e1t tri\u1ec3n c\u1ee7a m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng qua th\u1eddi gian. V\u00ec v\u1eady n\u1ebfu \u0111\u1ec1 b\u00e0i\u00a0y\u00eau c\u1ea7u v\u1ebd bi\u1ec3u \u0111\u1ed3 th\u1ec3 hi\u1ec7n s\u1ef1 ph\u00e1t tri\u1ec3n, t\u1ed1c \u0111\u1ed9 t\u0103ng tr\u01b0\u1edfng qua c\u00e1c m\u1ed1c th\u1eddi gian th\u00ec n\u00ean l\u1ef1a ch\u1ecdn bi\u1ec3u \u0111\u1ed3 \u0111\u01b0\u1eddng.<\/p>\n L\u01b0u \u00fd khi v\u1ebd bi\u1ec3u \u0111\u1ed3 \u0111\u01b0\u1eddng, tr\u1ee5c tung th\u1ec3 hi\u1ec7n \u0111\u1ed9 l\u1edbn c\u1ee7a \u0111\u1ea1i l\u01b0\u1ee3ng, tr\u1ee5c ho\u00e0ng th\u1ec3 hi\u1ec7n th\u1eddi gian.<\/p>\n