2021骞翠笂娴峰叕鍕�(w霉)鍝¤€冭│琛屾脯鏁�(sh霉)閲忛棞(gu膩n)绯绘瘡鏃ヤ竴绶达紙29锛�
鐎忚
鏀惰棌
2021骞翠笂娴峰叕鍕�(w霉)鍝¤€冭│琛屾脯鏁�(sh霉)閲忛棞(gu膩n)绯绘瘡鏃ヤ竴绶达紙29锛�
1.灏忓嫉灏囨柊璨风殑鎵嬫闁嬫瀵嗙⒓瑷�(sh猫)鐐虹敱1銆�3銆�6銆�9绲勬垚鐨勫洓浣嶆暩(sh霉)锛岀浜屽ぉ锛屽皬寮甸枊姗熸檪蹇樹簡鍥涗綅鏁�(sh霉)鐨勫叿楂旀帓搴�锛屽彧瑷樺緱鏁�(sh霉)瀛�3鍜�9鐩搁劙涓�1涓嶅湪鏈€鍚庛€傚晱灏忓嫉瑕佽│澶氬皯娆℃墠鑳界⒑淇濇墦闁嬫墜姗�?
A.6
B.8
C.10
D.12
2.鏌愬柈浣嶆妧琛�(sh霉)鏀寔鍜屽敭鍚庢湇鍕�(w霉)鍏╁€嬮儴闁€鐨勭敺鑱峰伐浜烘暩(sh霉)涔嬪拰鑸囧コ鑱峰伐浜烘暩(sh霉)涔嬪拰鐩稿悓銆傛妧琛�(sh霉)鏀寔閮ㄩ杸鐨勭敺鎬ц伔宸ヤ汉鏁�(sh霉)鏄コ鎬х殑1.5鍊嶏紝鍞悗鏈嶅嫏(w霉)閮ㄩ杸鐨勫コ鎬ц伔宸ユ瘮鐢锋€ц伔宸ュ10浜�銆傚晱鎶€琛�(sh霉)鏀寔閮ㄩ杸鏈夊灏戜汉?
A.25
B.30
C.35
D.50
3.鐢茶▓鍔�12:15鍑虹櫦(f膩)浠�45鍗冪背/灏忔檪鐨勯€熷害闁嬭粖鍓嶅線A甯傦紝骞朵簬15:45鎶甸仈銆備絾浠栧洜鏁呭欢閬插埌13:05鎵嶅嚭鐧�(f膩)骞朵簬15:35鎶甸仈銆傚晱浠栧闅涚殑琛岄閫熷害鐐哄灏戝崈绫�/灏忔檪?
A.54
B.57
C.60
D.63
4.灏忚常閮ㄦ棭涓婂啺鏌滀腑鏈夊彲妯�20鐡�锛岃槆鎵撴按15鐡躲€備腑鍗堟竻榛炲啺鏌滄檪鐧�(f膩)鐝�(xi脿n)鏌滀腑鍓╀綑鐨勫彲妯傜附鍍硅垏铇囨墦姘寸浉绛�銆傚凡鐭ュ彲妯�3鍏冧竴鐡讹紝铇囨墦姘�3.5鍏冧竴鐡�銆傚晱涓婂崍鍙▊鍜岃槆鎵撴按鍚堣▓鏈€澶氳常鍑轰簡澶氬皯鐡�?
A.22
B.18
C.12
D.9
5.鐢层€佷箼鍏╁悕宸ュ尃鍏卞悓瀹屾垚600浠剁Ξ鍝佸寘瑁�锛岀敳姣忓ぉ姣斾箼澶氬畬鎴�10浠�锛岀4澶╀箼鍥犵梾璜嬪亣涓€澶�锛屾渶绲傚叡鐢ㄤ簡9鏁村ぉ瀹屾垚浜嗗叏閮ㄥ伐浣溿€傚晱鐢�銆佷箼鍏╀汉鍏卞悓宸ヤ綔涓€澶╄兘瀹屾垚澶氬皯浠剁Ξ鍝佸寘瑁�?
A.64
B.70
C.72
D.80
婧Θ鎻愮ず锛�榛炴搳涓嬮爜鏌ョ湅2021骞翠笂娴峰叕鍕�(w霉)鍝¤€冭│琛屾脯鏁�(sh霉)閲忛棞(gu膩n)绯绘瘡鏃ヤ竴绶达紙29锛夌殑绛旀銆�2021骞翠笂娴峰叕鍕�(w霉)鍝¤€冭│灏囦簬浠婂勾12鏈堣垑琛岃€冭│锛屽皬绶ㄦ帹钖﹀悇浣嶈€冪敓浣跨敤 鍏嶈不闋�(y霉)绱勭煭淇℃彁閱�鏈嶅嫏(w霉)锛岄爯(y霉)绱勬垚鍔熷彲鍦�2021骞翠笂娴峰叕鍕�(w霉)鍝″牨鍚嶆檪闁�銆佺瓎瑭︽檪闁撶⒑瀹氭檪鏀跺埌鐭俊閫氱煡锛屾彁閱掑ぇ瀹舵彁鍓嶅仛濂芥簴(zh菙n)鍌�銆�
1.B
瑙ｆ瀽锛氭柟娉曚竴锛氶伕闋呮暩(sh霉)鎿�(j霉)鍧囨瘮杓冨皬锛岃鏄庢儏娉佹暩(sh霉)灏�锛屽彲浠ヨ€冩叜涓€涓€鏋氳垑銆傚叡瑷�8绋儏娉侊紝鍗宠瑭�8娆℃墠鑳界⒑淇濇墦闁嬫墜姗�銆�
鏂规硶浜岋細鐢遍鎰忓彲鐭�锛岃婊胯冻1涓嶅湪鏈€鍚庯紝鍓囧彲浣�3銆�6鎴�9鍦ㄦ渶鍚�(鍗冲湪绗洓浣�)锛屽垎鎯呮硜瑷庤珫濡備笅锛�(1)鑻ョ鍥涗綅鏁�(sh霉)瀛楃偤3锛氳淇濊瓑3鍜�9鐩搁劙锛岀涓変綅鏁�(sh霉)瀛楀彧鑳界偤9锛屽墿浣欏叐鍊嬫暩(sh霉)瀛楀湪绗竴浣嶅拰绗簩浣嶉€茶鍏ㄦ帓鍒�锛屾湁绋儏娉併€�(2)鑻ョ鍥涗綅鏁�(sh霉)瀛楃偤9锛氳淇濊瓑3鍜�9鐩搁劙锛岀涓変綅鏁�(sh霉)瀛楀彧鑳界偤3锛屽墿浣欏叐鍊嬫暩(sh霉)瀛楀湪绗竴浣嶅拰绗簩浣嶉€茶鍏ㄦ帓鍒�锛屾湁绋儏娉�銆�(3)鑻ョ鍥涗綅鏁�(sh霉)瀛楃偤6锛氳淇濊瓑3鍜�9鐩搁劙锛屽墖1鍙兘鏄涓€浣嶆暩(sh霉)瀛楁垨绗笁浣嶆暩(sh霉)瀛�锛�3鍜�9鍐嶉€茶鍏ㄦ帓鍒�锛屾湁绋儏娉�銆傚洜姝わ紝婊胯冻姊濅欢鐨勬儏娉佹暩(sh霉)浣嶇ó锛屽嵆瑕佽│8娆℃墠鑳界⒑淇濇墦闁嬫墜姗�銆傛晠姝ｇ⒑绛旀鐐築銆�
2.D
瑷�(sh猫)鎶€琛�(sh霉)鏀寔閮ㄩ杸濂宠伔宸ョ偤x浜�锛屽墖鐢疯伔宸ョ偤1.5x浜�銆傚敭鍚庢湇鍕�(w霉)鐢疯伔宸ョ偤y浜�锛屽墖濂宠伔宸ョ偤y+10浜�銆傜敱椤屾剰鍙垪鏂圭▼x+y+10=1.5x+y锛岃В寰梮=20浜�銆傚墖鎶€琛�(sh霉)鏀寔閮ㄩ杸鏈墄+1.5x=50浜�銆傛晠姝ｇ⒑绛旀鐐篋
3.D
瑙ｆ瀽锛氱敱椤屾剰鍙煡锛岃▓鍔�12:15鍑虹櫦(f膩)锛�15:45鎶甸仈锛屽叡琛岄3灏忔檪30鍒�锛屽嵆3.5灏忔檪銆傚墖璺▼鐐�45x3.5=157.5鍗冪背銆傚闅�13:05鍑虹櫦(f膩)锛�15锛�35鎶甸仈锛岃椐�2灏忔檪30鍒�锛屽嵆2.5灏忔檪銆傚墖瀵﹂殯閫熷害=157.5/2.5=63鍗冪背/灏忔檪
4.A
瑙ｆ瀽锛氭柟娉曚竴锛氳鎯宠常鍑虹殑鐩￠噺澶�锛屽墖鍓╀綑鎳�(y墨ng)鐩￠噺灏�銆傚亣瑷�(sh猫)鍙▊鍓╀綑x鐡�锛岃槆鎵撴按鍓╀綑y鐡�锛屾牴鎿�(j霉)鍓╀綑鐨勫彲妯傜附鍍硅垏铇囨墦姘寸浉绛夛紝鍙垪鍑烘柟绋�3x=3.5y锛屽墖x/y=7/6锛屽彲鎺ㄥ嚭x鏄�7鐨勫€嶆暩(sh霉)锛寉鏄�6鐨勫€嶆暩(sh霉)銆倄鏈€灏忕偤7锛屾鏅倅鐐�6锛屾晠鍓╀綑鐨勭摱鏁�(sh霉)鏈€灏戠偤13鐡躲€傜敱浜庡彲妯傚拰铇囨墦姘村叡鏈�20+15=35鐡�锛屽洜姝よ常鍑哄幓鐨勬渶澶氱偤35-13=22鐡�銆�
鏂规硶浜岋細鐢遍鎰忓墿浣欑附鍍圭浉绛�锛屾牴鎿�(j霉)绺藉児鐩哥瓑锛岄姺閲忚垏鍠児鎴愬弽姣�銆傚凡鐭ュ彲妯傚柈鍍�:铇囨墦姘村柈鍍�=3:3.5=6:7锛屽墖鍓╀綑鍙▊鏈€灏戠偤7鐡�锛屽墿浣欒槆鎵撴按鏈€灏戠偤6鐡�锛岄偅涔堣常鎺夊彲妯傛渶澶氱偤20-7=13鐡�锛岃常鎺夎槆鎵撴按鏈€澶氱偤15-6=9鐡讹紝鍏╃ó椋叉枡鍚堣▓鏈€澶氳常鍑轰簡22鐡�銆傛晠姝ｇ⒑绛旀鐐篈
5.B
瑙ｆ瀽锛�
瑷�(sh猫)涔欐瘡澶╁畬鎴恱浠剁Ξ鍝侊紝鍓囩敳姣忓ぉ瀹屾垚(x+10)浠剁Ξ鍝�锛屾牴鎿�(j霉)椤屾剰鍙煡(x+10)x9+x(9-1)=600浠�,瑙ｅ緱x=30浠�锛屽嵆鐢叉瘡澶╃敓鐢�(ch菐n)x+10=40浠�锛屼箼姣忓ぉ鐢熺敘(ch菐n)30浠�锛岀敳銆佷箼鍏╀汉鍏卞悓宸ヤ綔涓€澶╁畬鎴�40+30=70浠�銆傛晠姝ｇ⒑绛旀鐐築
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