2020骞存禉姹熷叕鍕�(w霉)鍝¤娓�(c猫)鏁�(sh霉)閲忛棞(gu膩n)绯绘瘡鏃ヤ竴绶�(6鏈�20鏃�)

鏇存柊鏅�(sh铆)闁擄細2020-06-20 09:50:01 渚嗘簮锛氱挵(hu谩n)鐞冪恫(w菐ng)鏍�

鐎忚

鏀惰棌

鍦版柟鍏嫏(w霉)鍝″牨(b脿o)鍚�銆佽€冭│銆佹煡鍒嗘檪(sh铆)闁� 鍏嶈不(f猫i)鐭俊鎻愰啋

鍦板崁(q奴)

鐛插彇椹�(y脿n)璀� 绔嬪嵆闋�(y霉)绱�

璜�(q菒ng)?zh铆)椤氭啛D鐗囬(y脿n)璀夌⒓鍚庣嵅鍙栫煭淇￠(y脿n)璀夌⒓

鐪嬩笉娓呮锛屾彌寮靛湒鐗�

鍏嶈不(f猫i)鐛插彇鐭俊椹�(y脿n)璀夌⒓

鎽樿 2020骞存禉姹熷叕鍕�(w霉)鍝＄瓎瑭﹀叕鍛婂凡缍�(j墨ng)姝ｅ紡鐧�(f膩)甯�锛岃€冭│鏅�(sh铆)闁撶偤7鏈�26鏃ャ€傜偤骞姪澶у楂樻晥鍌欒€�2020骞存禉姹熷叕鍕�(w霉)鍝＄瓎瑭�锛屽皬绶ㄦ牴鎿�(j霉)姝峰勾娴欐睙鍏嫏(w霉)鍝¤€冭│鍏�(n猫i)瀹癸紝鏁寸悊浜�2020骞存禉姹熷叕鍕�(w霉)鍝¤娓�(c猫)鏁�(sh霉)閲忛棞(gu膩n)绯绘瘡鏃ヤ竴绶�(6鏈�20鏃�)鐨勫収(n猫i)瀹�锛岃珛(q菒ng)瑾�(r猫n)鐪熷仛椤屻€�

2020骞存禉姹熷叕鍕�(w霉)鍝¤娓�(c猫)鏁�(sh霉)閲忛棞(gu膩n)绯绘瘡鏃ヤ竴绶�(6鏈�20鏃�)

1.鏌愬煄甯�9鏈堝钩鍧囨埃婧偤28.5搴�锛屽鐣�(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︼紝鍓囪┎鏈堝钩鍧囨埃婧湪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(y霉n)鍕�(d貌ng)鏈�(hu矛)锛岃ō(sh猫)缃簡“榇婚亱(y霉n)褰╃悆”“琚嬮紶閬�(y霉n)鐡�”“鐦嬬媯姣涙瘺锜�”“鍕�(d貌ng)鎰熶簲鐠�(hu谩n)”鍜�“璨�(c谩i)婧愭痪婊�”5鍊�(g猫)闋�(xi脿ng)鐩紝瑕佹眰姣忓悕鍝″伐鍙冨姞涓斿彧鑳藉弮鍔犲叾涓�2闋�(xi脿ng)銆傜劇璜栧浣曞畨鎺掞紝閮借嚦灏戞湁12鍚嶅摗宸ュ弮鍔犵殑闋�(xi脿ng)鐩畬鍏ㄧ浉鍚�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?q菒ng)?b脿o)锛屾瘡鎴朵汉瀹惰嚦灏�2浠�锛屾渶澶�4浠姐€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(sh铆)椹�(y脿n)瀹ら渶璩�(g貌u)鏌愮ó鍖栧伐鍘熸枡150 鍗冨厠锛岀従(xi脿n)鍦ㄥ競鍫�(ch菐ng)涓婂師鏂欐寜琚嬪嚭鍞�锛屾湁鍏╃ó鍖呰锛屼竴绋槸姣忚45 鍗冨厠锛屽児(ji脿)鏍肩偤280 鍏�;鍙︿竴绋槸姣忚36 鍗冨厠锛屽児(ji脿)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(f猫i)( )銆�

A.960 鍏�

B.1000 鍏�

C.1040 鍏�

D.1080 鍏�

5.鏈塧銆乥銆乧涓夊€�(g猫)鏁�(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�(di菐n)鎿婁笅闋�(y猫)鍙煡鐪�2020骞存禉姹熷叕鍕�(w霉)鍝¤娓�(c猫)鏁�(sh霉)閲忛棞(gu膩n)绯绘瘡鏃ヤ竴绶�(6鏈�20鏃�)姣忔棩涓€绶寸瓟妗�銆�2020骞存禉姹熷叕鍕�(w霉)鍝¤€冭│鏅�(sh铆)闁撶偤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(f猫i)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(sh铆)闁撳埌渚嗘檪(sh铆)鐛插緱鐭俊閫氱煡锛屾彁閱掑ぇ瀹跺仛濂借€冭│婧�(zh菙n)鍌�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€瀹氱殑鎯呮硜涓嬶紝鍓囧繀鐒舵槸鍏朵粬澶╃殑婧害鐩″彲鑳戒綆锛岃€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�锛屾渶鐔卞ぉ鍏ㄩ儴鐐�30搴�锛屽叾浣欏ぉ鐐烘渶鍐峰ぉ锛屾韩搴︾偤20搴︼紝瑷�(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�(xi脿ng)鐩畬鍏ㄧ浉鍚岋紝鍗充粬鍊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�(g猫)鍝″伐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�(g猫)鎶藉睖涓�锛岄偅涔堣嚦灏戞湁涓€鍊�(g猫)鎶藉睖涓殑鐗╁搧涓嶅皯浜�(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(xi脿ng)銆�

4.绛旀: B

銆愯В鏋愩€戯細瑕佹兂鑺辫不(f猫i)鏈€灏�锛屽氨瑕佸湪璩�(g貌u)璨风殑绺介噸閲忕洝鍙兘鎺ヨ繎150鍗冨厠鐨勬儏娉佷笅浣跨附鐨勫児(ji脿)鏍兼渶浣�锛岄伕闋�(xi脿ng)涓殑鏈€浣庡児(ji脿)鐐�960鍏�锛�960鍏冨彧鑳借臣(g貌u)璨�4琚嬫瘡琚嬬偤240鍏冨師鏂�锛屾鏅�(sh铆)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(xi脿ng);B銆丆銆丏涓夊€�(g猫)閬搁爡(xi脿ng)涓殑鏈€浣庡児(ji脿)鐐築閬搁爡(xi脿ng)1000鍏冿紝1000鍏冨彲浠ヨ臣(g貌u)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�(sh铆)椹�(y脿n)瀹ょ殑闇€姹�)锛屽苟涓斿湪B銆丆銆丏涓夊€�(g猫)閬搁爡(xi脿ng)涓殑鏈€浣庡児(ji脿)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�(g猫)寮忓瓙鍙緱b=2c/3锛屼唬鍏ョ涓夊€�(g猫)寮忓瓙鍙緱c=9鎴栬€�-9锛岀暥(d膩ng)c=9鏅�(sh铆)锛宎=4锛宐=6;c=-3鏅�(sh铆)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(f霉)4;ab=24锛宎c=36锛宐c=54锛屽緱鍑篵绛変簬姝ｈ矤(f霉)6锛宑绛変簬姝ｈ矤(f霉)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�銆�

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