2020骞存禉姹熷叕鍕�(w霉)鍝¤娓暩(sh霉)閲忛棞(gu膩n)绯绘瘡鏃ヤ竴绶�(7鏈�8鏃�)
鐎忚
鏀惰棌
2020骞存禉姹熷叕鍕�(w霉)鍝¤娓暩(sh霉)閲忛棞(gu膩n)绯绘瘡鏃ヤ竴绶�(7鏈�8鏃�)
1.鏌愬煄甯�9鏈堝钩鍧囨埃婧偤28.5搴︼紝濡傜暥(d膩ng)鏈堟渶鐔辨棩鍜屾渶鍐锋棩鐨勫钩鍧囨埃婧浉宸笉瓒呴亷10搴�锛屽墖瑭叉湀骞冲潎姘ｆ韩鍦�30搴﹀強浠ヤ笂鐨勬棩瀛愭渶澶氭湁澶氬皯澶�?( )
A.24
B.25
C.26
D.27
2.鏌愬叕鍙哥祫绻旇叮鍛抽亱鍕曟渻锛岃ō(sh猫)缃簡“榇婚亱褰╃悆”“琚嬮紶閬嬬摐”“鐦嬬媯姣涙瘺锜�”“鍕曟劅浜旂挵(hu谩n)”鍜�“璨℃簮婊炬痪”5鍊嬮爡鐩�锛岃姹傛瘡鍚嶅摗宸ュ弮鍔犱笖鍙兘鍙冨姞鍏朵腑2闋呫€傜劇璜栧浣曞畨鎺�锛岄兘鑷冲皯鏈�12鍚嶅摗宸ュ弮鍔犵殑闋呯洰瀹屽叏鐩稿悓锛屽晱瑭插柈浣嶈嚦灏戞湁( )鍚嶅摗宸�銆�
A.89
B.100
C.111
D.121
3.鏈�3鎴朵汉瀹跺叡瑷備簡10浠芥棩鍫�锛屾瘡鎴朵汉瀹惰嚦灏�2浠�锛屾渶澶�4浠�銆傚晱锛氫竴鍏辨湁澶氬皯绋笉鍚岀殑瑷傛硶?( )
A.6
B.12
C.18
D.21
4.鏌愬椹楀闇€璩兼煇绋寲宸ュ師鏂�150 鍗冨厠锛岀従(xi脿n)鍦ㄥ競鍫翠笂鍘熸枡鎸夎鍑哄敭锛屾湁鍏╃ó鍖呰锛屼竴绋槸姣忚45 鍗冨厠锛屽児鏍肩偤280 鍏�;鍙︿竴绋槸姣忚36 鍗冨厠锛屽児鏍肩偤240 鍏�锛屽湪婊胯冻闇€瑕佺殑姊濅欢锛屾渶灏戣鑺辫不( )銆�
A.960 鍏�
B.1000 鍏�
C.1040 鍏�
D.1080 鍏�
5.鏈塧銆乥銆乧涓夊€嬫暩(sh霉)锛屽凡鐭×b=24锛宎×c=36锛宐×c=54銆傛眰a+b+c=( )銆�
A.23
B.21
C.19
D.17
婧Θ鎻愮ず锛�榛炴搳涓嬮爜鍙煡鐪�2020骞存禉姹熷叕鍕�(w霉)鍝¤娓暩(sh霉)閲忛棞(gu膩n)绯绘瘡鏃ヤ竴绶�(7鏈�8鏃�)绛旀銆�2020骞存禉姹熷叕鍕�(w霉)鍝¤€冭│鏅傞枔鐐�7鏈�26鏃�锛屽缓璀板悇浣嶈€冪敓浣跨敤鐠�(hu谩n)鐞冪恫(w菐ng)鏍� 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ㄧ瓎瑭︽檪闁撳埌渚嗘檪鐛插緱鐭俊閫氱煡锛屾彁閱掑ぇ瀹跺仛濂借€冭│婧栧倷銆�
1.绛旀: B
銆愯В鏋愩€戯細瑕佷娇30搴︿互涓婄殑澶╂暩(sh霉)鐩″彲鑳藉锛屽湪姘ｆ韩绺藉拰涓€瀹氱殑鎯呮硜涓�锛屽墖蹇呯劧鏄叾浠栧ぉ鐨勬韩搴︾洝鍙兘浣�锛岃€岀敱鏈€鐔辨棩鑸囨渶鍐锋棩鐨勫钩鍧囨埃婧浉宸笉瓒呴亷10搴�锛屾摎(j霉)姝ゆ(g貌u)閫犳サ绔儏娉侊紝鏈€鐔卞ぉ鍏ㄩ儴鐐�30搴�锛屽叾浣欏ぉ鐐烘渶鍐峰ぉ锛屾韩搴︾偤20搴�锛岃ō(sh猫)骞冲潎姘ｆ韩鐐�30搴︾殑澶╂暩(sh霉)鐐簒锛屽墖鍙緱30x+20(30-x)=30×28.5锛岃В寰梮=25.5锛屽洜姝ゆ渶澶氭湁25澶�銆傛晠姝ｇ⒑绛旀鐐築銆�
2.绛旀: C
銆愯В鏋愩€戯細瑙ｆ硶涓€锛氬埄鐢ㄦ渶涓嶅埄鍘熷墖銆傛瘡鍚嶅摗宸ユ湁 =10(绋�)閬告搰鎯呮硜锛岃浣胯嚦灏戞湁12鍚嶅摗宸ュ弮鍔犵殑闋呯洰瀹屽叏鐩稿悓锛屽嵆浠栧€戠殑閬告搰鎯呮硜瀹屽叏鐩稿悓锛屽繀闋堝湪姣忕ó鎯呮硜鍧囨湁11鍚嶅摗宸ラ伕鎿囩殑鍩虹(ch菙)涓婏紝鍐嶅姞涓婁竴鍊嬪摗宸�锛屽嵆鑷冲皯瑕佹湁10×11+1=111(鍚�)鍝″伐锛屾墠鑳戒簣浠ヤ繚璀�銆�
瑙ｆ硶浜岋細鍒╃敤鎶藉睖鍘熺悊銆傛牴鎿�(j霉)鎶藉睖鍘熺悊“灏囧浜巑n浠剁殑鐗╁搧浠绘剰鏀惧埌n鍊嬫娊灞滀腑锛岄偅涔堣嚦灏戞湁涓€鍊嬫娊灞滀腑鐨勭墿鍝佷笉灏戜簬(m+1)浠�”锛岄€欓噷鐨刵=10锛宮=1锛屽墖鍝″伐鑷冲皯鏈�10×11+1=111(鍚�)銆�
3.绛旀:
銆愯В鏋愩€戯細鏍规摎(j霉)椤屾剰鍙煡锛�3鎴朵汉瀹惰▊鐨勬暩(sh霉)閲忓彧鑳芥槸2銆�4銆�4鎴�3銆�3銆�4銆傝▊2銆�4銆�4鐨勮┍锛屾湁C 1 3绋笉鍚岀殑瑷傛硶;瑷�3銆�3銆�4鐨勮┍锛屼篃鏈塁 1 3绋笉鍚岀殑瑷傛硶锛屾墍浠ヤ竴鍏辨湁C 1 3 ×2=6绋笉鍚岀殑瑷傛硶銆傚洜姝�锛屾湰椤岀瓟妗堢偤A閬搁爡銆�
4.绛旀: B
銆愯В鏋愩€戯細瑕佹兂鑺辫不鏈€灏�锛屽氨瑕佸湪璩艰卜鐨勭附閲嶉噺鐩″彲鑳芥帴杩�150鍗冨厠鐨勬儏娉佷笅浣跨附鐨勫児鏍兼渶浣庯紝閬搁爡涓殑鏈€浣庡児鐐�960鍏�锛�960鍏冨彧鑳借臣璨�4琚嬫瘡琚嬬偤240鍏冨師鏂欙紝姝ゆ檪绺介噸閲忕偤4×36=144(鍗冨厠)锛屽皬浜�150鍗冨厠锛屼笉婊胯冻姊濅欢锛屾帓闄閬搁爡;B銆丆銆丏涓夊€嬮伕闋呬腑鐨勬渶浣庡児鐐築閬搁爡1000鍏�锛�1000鍏冨彲浠ヨ臣璨�3琚嬫瘡琚嬬偤240鍏冪殑鍘熸枡鍜�1琚嬫瘡琚嬬偤280鍏冪殑鍘熸枡锛岀附閲嶉噺鐐�3×36+1×45=153(鍗冨厠)锛岀附閲嶉噺鎺ヨ繎150鍗冨厠(婊胯冻瀵﹂瀹ょ殑闇€姹�)锛屽苟涓斿湪B銆丆銆丏涓夊€嬮伕闋呬腑鐨勬渶浣庡児锛屾晠姝ｇ⒑绛旀鐐築銆�
5.绛旀: C
銆愯В鏋愩€戯細瑙ｆ瀽1锛氱敱鍓嶅叐鍊嬪紡瀛愬彲寰梑=2c/3锛屼唬鍏ョ涓夊€嬪紡瀛愬彲寰梒=9鎴栬€�-9锛岀暥(d膩ng)c=9鏅傦紝a=4锛宐=6;c=-3鏅�锛宎=-4锛宐=-6銆傛墍浠+b+c=19鎴栬€卆+b+c=-19銆�
瑙ｆ瀽2锛歛b涔榓c鍐嶉櫎bc锛屽氨鏄痑鐨勫钩鏂�=16锛屾墍浠绛変簬姝ｈ矤4;ab=24锛宎c=36锛宐c=54锛屽緱鍑篵绛変簬姝ｈ矤6锛宑绛変簬姝ｈ矤9銆俛+b+c=19鎴�-19銆�
娉ㄩ噵锛歛+b+c=19鎴�-19锛岀瓟妗堝彧绲﹀嚭浜嗕竴绋€�
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