2019涓嬪崐骞村洓宸濆叕鍕�(w霉)鍝¤€冭│琛屾脯娌栧埡鏁�(sh霉)閲忛棞(gu膩n)绯绘ā鎿│椤�(鍥�)
鐎忚
鏀惰棌
1.绺藉叕鍙告淳鍑鸿嫢骞蹭汉鍝＄祫鎴�5鍊�(g猫)宸ヤ綔绲勫埌涓嬪爆鍏徃閫�(j矛n)琛屽贰鏌ワ紝鍏朵腑锛岀敳绲勭殑浜烘暩(sh霉)鏄附?c猫)钘�?sh霉)鐨�14%锛屼箼绲勪汉鏁�(sh霉)鏄附?c猫)钘�?sh霉)鐨�1/4锛屼笝绲勪汉鏁�(sh霉)鏄敳涔欏叐绲勪汉鏁�(sh霉)涔嬪拰鐨�2/3锛屼竵绲勪汉鏁�(sh霉)鏄敳涓欏叐绲勪汉鏁�(sh霉)涔嬪樊鐨�2鍊�锛屼笖鍏朵腑鏈変笁鍊�(g猫)绲勭殑浜烘暩(sh霉)姝ｅソ鏄€ｇ簩(x霉)鐨勫伓鏁�(sh霉)銆傚晱鐢茬祫姣旀垔绲勫澶氬皯浜�( )
A.4 B.6 C.10 D.18
2.鍠崹(d煤)瀹屾垚鏌愰爡(xi脿ng)宸ョ▼锛岀敳闅�(du矛)闇€瑕�36澶�锛屼箼闅�(du矛)闇€瑕�30澶�锛屼笝闅�(du矛)闇€瑕�32澶┿€傚鏋滃畨鎺掑悎浣滄柦宸�锛屾寜鐓х敳涔�銆佷箼涓�銆佷笝鐢�銆佺敳涔�……鐨勯爢搴忔寜澶╄吉杞�(zhu菐n)锛屽晱瀹屾垚閫欓爡(xi脿ng)宸ヤ綔鏅�(sh铆)锛岀敳宸ヤ綔浜嗗灏戝ぉ( )
A.11澶╂暣 B.11澶╁ C.12澶╂暣 D.12澶╁
3.姘存灉搴楄鎶�256鍊�(g猫)铇嬫灉瑁濋€�(j矛n)绱欑锛岀従(xi脿n)鏈夎兘瑁�12鍊�(g猫)铇嬫灉鍜岃兘瑁�18鍊�(g猫)铇嬫灉鐨勫叐绋礄绠�锛屽晱鏈€灏戣瑁�(b菙)鍏呭灏戝€�(g猫)铇嬫灉鎵嶈兘姝ｅソ灏囦竴瀹氭暩(sh霉)閲忕殑绱欑瑁濇豢( )
A.0 B.2 C.4 D.6
4.2016骞撮枔锛岀敳銆佷箼銆佷笝銆佷竵鍥涘€�(g猫)鏁欑爺瀹ゅ叡鍦ㄥ(xu茅)琛�(sh霉)鏈熷垔涓婄櫦(f膩)琛ㄦ枃绔�28绡�锛屽凡鐭ョ敳鐧�(f膩)琛ㄧ殑鏂囩珷鏁�(sh霉)涓嶅埌10绡囦笖涓嶅皯浜庝箼锛屼箼鐧�(f膩)琛ㄧ殑鏂囩珷鏁�(sh霉)涓嶅皯浜庝笝锛屼笝鐧�(f膩)琛ㄧ殑鏂囩珷鏁�(sh霉)涓嶅皯浜庝竵锛屼竵鐧�(f膩)琛ㄧ殑鏂囩珷鏁�(sh霉)鏄鏁�(sh霉)銆傚晱姣忓€�(g猫)鏁欑爺瀹ょ櫦(f膩)琛ㄧ殑鏂囩珷鏁�(sh霉)鏈夊灏戠ó涓嶅悓鐨勫彲鑳芥€�( )
A.4 B.6 C.8 D.10
5.鏁欒偛灞€鍘熻▓(j矛)鍔冪祫绻�200澶氬悕鏁欏斧绲勬垚鑻ュ共鏀汉鏁�(sh霉)鐩哥瓑鐨勬敮鏁欓殜(du矛)涓嬮剦(xi膩ng)鏈嶅嫏(w霉)銆傚悗鐐轰簡鎿�(ku貌)澶ф敮鏁欒寖鍦�锛屾焙瀹氬瑷�(sh猫)1鏀敮鏁欓殜(du矛)锛屽苟灏囨瘡鏀敮鏁欓殜(du矛)鐨勪汉鏁�(sh霉)澧炲姞4浜�锛岃€屽(sh铆)闅涙淳鍑虹殑鏁欏斧绺�?c猫)钘�?sh霉)姝ｅソ鏄師瑷�(j矛)鍔冪殑1.5鍊�銆傞偅涔堝師瑷�(j矛)鍔冪祫鎴愬灏戞敮鏀暀闅�(du矛)( )
A.24 B.26 C.28 D.30
涓嬮潰鏄弮鑰冪瓟妗堣垏瑙ｆ瀽
1.B
2.銆愯В鏋愩€慉銆傚皣宸ヤ綔绺介噺瑷�(sh猫)鐐烘檪(sh铆)闁�36銆�30銆�32鐨勬渶灏忓叕鍊嶆暩(sh霉)锛屽嵆1440锛屽墖鐢查殜(du矛)鏁堢巼鐐�1440÷36=40锛屼箼闅�(du矛)鏁堢巼鐐�1440÷30=48锛屼笝闅�(du矛)鏁堢巼鐐�1440÷32=45銆傛寜鐓ч鐩爢搴忔寜澶╄吉杞�(zhu菐n)锛屾瘡3澶╃偤涓€鍊�(g猫)鍛ㄦ湡锛屾瘡鍊�(g猫)鍛ㄦ湡涓敳宸ヤ綔2澶�锛屼笁闅�(du矛)鍏卞彲浠ュ畬鎴�1×(40+48)+1×(48+45)+1×(40+45)=266锛�1440÷266=5浣�110锛岋紝鍗崇敤浜�5鍊�(g猫)鍛ㄦ湡(15澶�)锛岄倓鍓�110浠藉伐浣滈噺銆傜16澶╃偤鐢蹭箼鍚堜綔锛屽畬鎴愬伐浣滈噺鐐�1×(40+48)=88锛�16澶╃祼(ji茅)鏉熷悗宸ヤ綔閲忛倓鍓╀笅110-88=22锛屽墖绗�17澶╃偤涔欎笝鍚堜綔锛屽氨鍙互瀹屾垚鍏ㄩ儴宸ヤ綔閲�銆傚墖鐢查殜(du矛)宸ヤ綔鐨勬檪(sh铆)闁撶偤5×2+1=11澶�銆傛晠姝ｇ⒑绛旀鐐篈闋�(xi脿ng)銆�
3.銆愯В鏋愩€態銆傚亣瑷�(sh猫)鑳借12鍊�(g猫)铇嬫灉鍜�18鍊�(g猫)铇嬫灉鐨勭礄绠辨暩(sh霉)閲忓垎鍒ョ偤a鑸嘼锛岄渶瑕佽(b菙)鍏呯殑铇嬫灉鏁�(sh霉)鏄痻锛屽墖鏂圭▼鍙〃绀虹偤12a+18b=256+x銆傚洜12鍜�18閮芥槸6鐨勫€嶆暩(sh霉)锛屽墖256+x鏄�6鐨勫€嶆暩(sh霉)銆備唬鍏ラ伕闋�(xi脿ng)閫�(j矛n)琛岄(y脿n)璀夈€�
A闋�(xi脿ng)锛�256+0=256锛屼笉鏄�6鐨勫€嶆暩(sh霉)锛屾帓闄ゃ€�
B闋�(xi脿ng)锛�256+2=258锛屾槸6鐨勫€嶆暩(sh霉)锛屽寲绨″緱2a+3b=43锛屾牴鎿�(j霉)濂囧伓鐗规€э紝43鏄鏁�(sh霉)銆�2a鏄伓鏁�(sh霉)锛屽墖3b鏄鏁�(sh霉)锛屽彲寰梑鏄鏁�(sh霉)銆傝嫢b绛変簬1锛屽墖a=20锛岀瓑寮忔垚绔�锛屾纰�銆傚洜椤岀洰鍟忕殑鏄渶灏�锛屽洜姝ゅ叾浣欑瓟妗堜笉鐢ㄩ(y脿n)璀�銆�
鏁呮纰虹瓟妗堢偤B闋�(xi脿ng)銆�
4.銆愯В鏋愩€慍銆傜敱椤屾剰鍙緱锛岀敳≥涔�≥涓�≥涓�锛屼笖鏂囩珷绺芥暩(sh霉)鐐�28锛屽墖鐢�≥28÷4锛屽嵆鐢�≥7锛屽張鍥犵敳涓嶅埌10绡�锛屽彲寰�7≤鐢�≤9锛屾墍浠ョ敳鐨勬暩(sh霉)閲忓彧鑳藉彇鍊�7銆�8銆�9銆傝€屼竵≤涓�≤涔�≤鐢�锛屽墖涓�≤28÷4锛屽嵆涓�≤7锛屽張鍥�?y脿n)妲庘垐鐬ч弨?sh霉)锛屾墍浠ヤ竵鐨勬暩(sh霉)閲忓彧鑳藉彇鍊�1銆�3銆�5銆�7銆�
鍏辨湁8绋彲鑳芥€�銆傛晠姝ｇ⒑绛旀鐐篊闋�(xi脿ng)銆�
5.銆愯В鏋愩€態銆傝ō(sh猫)鍘熸敮鏁欓殜(du矛)姣忛殜(du矛)鐨勪汉鏁�(sh霉)鏄痻锛屽師渚嗘湁鏀暀闅�(du矛)y鏀�銆傛牴鎿�(j霉)瀵�(sh铆)闅涗汉鏁�(sh霉)鏄師瑷�(j矛)鍔冪殑1.5鍊�锛屽彲浠ュ垪鍑烘柟绋�(x+4)×(y+1)=1.5xy銆傚叐鍊�(g猫)鏈煡鏁�(sh霉)涓€鍊�(g猫)鏂圭▼锛屽彲浠ヤ唬鍏ラ伕闋�(xi脿ng)閫�(j矛n)琛岄(y脿n)璀�銆�
A闋�(xi脿ng)锛屽皣y=24浠ｅ叆鏂圭▼鍚�锛寈瑙ｄ笉鍑烘暣鏁�(sh霉)锛屾帓闄�銆�
B闋�(xi脿ng)锛屽皣y=26浠ｅ叆鏂圭▼鍚�锛寈=9锛屾鏅�(sh铆)鍘熻▓(j矛)鍔冧汉鏁�(sh霉)鐐�锛屾豢瓒冲師瑷�(j矛)鍔冪祫绻�200澶氬悕鏁欏斧锛屾纰�銆�
C銆丏闋�(xi脿ng)锛屽皣y=28锛寉=30浠ｅ叆鏂圭▼鍚�锛寈瑙ｄ笉鍑烘暣鏁�(sh霉)锛屾帓闄�銆�
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