2020骞撮櫆瑗垮叕鍕�(w霉)鍝¤€冭│鏁�(sh霉)閲忛棞(gu膩n)绯荤反缈�(x铆)(12鏈�13鏃�)
鐎忚
鏀惰棌
2020骞撮櫆瑗垮叕鍕�(w霉)鍝¤€冭│鏁�(sh霉)閲忛棞(gu膩n)绯荤反缈�(x铆)锛�
1.鏈変竴鍙悩锛屾瘡灏忔檪鎱�3鍒嗛悩锛屾棭鏅�4榛�30鍒嗙殑鏅傚€�锛屾妸閻樺皪婧�(zh菙n)浜嗘(bi膩o)婧�(zh菙n)鏅傞枔锛屽墖閻樿蛋鍒扮暥(d膩ng)澶╀笂鍗�10榛�50鍒嗙殑鏅傚€�锛屾(bi膩o)婧�(zh菙n)鏅傞枔鏄�( )銆�
A.11榛炴暣
B.11榛�5鍒�
C.11榛�10鍒�
D.11榛�15鍒�
2.鍟嗗牬闁嬪睍淇冮姺娲诲嫊锛屽嚒璩肩墿婊�100鍏冭繑閭勭従(xi脿n)閲�30鍏�锛屽皬鐜嬬従(xi脿n)鏈�280鍏�锛屾渶澶氳兘璨峰埌澶氬皯鍏冪殑鐗╁搧?( )
A.250
B.280
C.310
D.400
3.鑻ュ共鍊嬪悓瀛�(xu茅)鍘诲妰鑸�锛屼粬鍊戠浜嗕竴浜涜埞锛岃嫢姣忚埞4浜哄墖澶�5浜�锛岃嫢姣忚埞5浜哄墖鑸逛笂鏈�4鍊嬬┖浣嶃€傚叡鏈�( )鍊嬪悓瀛�(xu茅)銆�
A.17
B.19
C.26
D.41
4.鎵撳嵃涓€浠界ǹ浠�锛屽皬寮�5灏忔檪鍙互鎵撳畬閫欎唤绋夸欢鐨�1/3锛屽皬鏉�3灏忔檪鍙互鎵撳畬閫欎唤绋夸欢鐨�1/4锛屽鏋滃叐浜哄悎鎵撳灏戝皬鏅傚彲浠ュ畬鎴�?( )
A.6
B.20/3
C.7
D.22/3
5.鏌愬柈浣嶅師鏈�45鍚嶈伔宸�锛屽緸涓嬬礆鍠綅瑾�(di脿o)鍏�5鍚嶉花鍝¤伔宸ュ悗锛岃┎鍠綅鐨勯花鍝′汉鏁�(sh霉)鍗犵附?c猫)钘�?sh霉)鐨勬瘮閲嶄笂鍗囦簡6鍊嬬櫨鍒嗛粸銆傚鏋滆┎鍠綅鍙堟湁2鍚嶈伔宸ュ叆榛�锛岄偅涔堣┎鍠綅鐝�(xi脿n)鍦ㄧ殑榛ㄥ摗浜烘暩(sh霉)鍗犵附?c猫)钘�?sh霉)鐨勬瘮閲嶇偤澶氬皯?
A.50%
B.40%
C.70%
D.60%
涓嬮潰鏄�2020骞撮櫆瑗垮叕鍕�(w霉)鍝¤€冭│鏁�(sh霉)閲忛棞(gu膩n)绯诲弮鑰冪瓟妗堣垏瑙ｆ瀽锛�
1.绛旀: C
銆愯В鏋愩€戯細鎴戝€戠煡閬撴甯哥殑鏅傞悩鍒嗛嚌?bi膩o)淇ｈ懝?0灏忔牸/灏忔檪锛岃€屾垜鍊戠殑鎱㈤悩姣忓皬鏅傛瘮姝ｅ父鐨勬檪閻樻參3鍒嗛悩锛屼篃灏辨槸瑾參閻樼殑鍒嗛嚌姣忓皬鏅傚彧璧�57灏忔牸锛屽嵆鎱㈤悩鍒嗛嚌鐨勯€熷害鐐�57灏忔牸/灏忔檪銆傛牴鎿�(j霉)椤屾剰锛屾參閻樺緸鏃╂櫒4榛�30鍒嗚蛋鍒颁笂鍗�10榛�50鍒�锛屼竴鍏辩稉(j墨ng)閬庝簡380鍒嗛悩锛屼篃灏辨槸鍒嗛嚌璧颁簡380灏忔牸锛屽嵆鎱㈤悩鍒嗛嚌鐨勮矾绋嬬偤380灏忔牸銆備笉绠℃甯哥殑鏅傞悩閭勬槸鎱㈤悩锛屼粬鍊戞墍缍�(j墨ng)姝风殑妯�(bi膩o)婧�(zh菙n)鏅傞枔鏄浉鍚岀殑锛屾墍浠ユ牴鎿�(j霉)鏅傞枔鐩哥瓑鍙互鍒楀嚭浠ヤ笅鏂圭▼锛岃ō(sh猫)姝ｅ父鐨勬檪閻樺垎閲濈殑璺▼鐐篨锛屽墖X/60=380/57锛岃В寰梄=400锛屼篃灏辨槸瑾甯哥殑鏅傞悩鐨勫垎閲濇瘮鎱㈤悩澶氳蛋400-380=20鍊嬪皬鏍硷紝涔熷氨鏄妯�(bi膩o)婧�(zh菙n)鏅傞枔鎳�(y墨ng)瑭叉瘮鎱㈤悩鎵€椤ず鐨勬檪闁撳揩20鍒嗛悩锛屾墍浠ユ(bi膩o)婧�(zh菙n)鏅傞枔鎳�(y墨ng)瑭叉槸11榛�10鍒嗐€�
2.绛旀: D
銆愯В鏋愩€戯細鏍规摎(j霉)椤屾剰锛岄鍏堟帓闄銆丅閬搁爡锛屽緸C鍜孌涓洿鎺ヤ唬鍏ユ暩(sh霉)瀛楁洿鍔犲弸濂界殑D閬搁爡锛屾垚绔嬨€� 鏁呮纰虹瓟妗堢偤D銆�
3.绛旀: D
銆愯В鏋愩€戯細瑷�(sh猫)鐢眡姊濊埞锛屽墖鏈�4x+5=5x-4锛岃В寰梮=9銆傚墖鍏辨湁4×9+5=41鍊嬪悓瀛�(xu茅)銆傛晠姝ｇ⒑绛旀鐐篋銆�
鑰佸斧榛炵潧:鐢�“姣忚埞4浜哄墖澶�5浜�”鍙煡锛屽(xu茅)鐢熶汉鏁�(sh霉)娓涘幓5鐐�4鐨勬暣鏁�(sh霉)鍊嶏紝鏁呮帓闄銆丆;鐢�“鑻ユ瘡鑸�5浜哄墖鑸逛笂鏈�4鍊嬬┖浣�”鍙煡锛屽(xu茅)鐢熶汉鏁�(sh霉)鍔犱笂4鐐�5鐨勬暣鏁�(sh霉)鍊�锛屾晠鎺掗櫎A銆傛晠姝ｇ⒑绛旀鐐篋銆�
4.绛旀: B
銆愯В鏋愩€戯細瑷�(sh猫)绺界殑绋夸欢鐐�60寮�锛岀敱椤屾剰锛屽皬寮垫瘡灏忔檪鎵撳嵃1/15锛屽皬鏉庢瘡灏忔檪鎵撳嵃1/12锛屽墖灏忓嫉銆佸皬鏉庢瘡灏忔檪鍒嗗垾鑳芥墦鍗�4寮�銆�5寮�銆傚鏋滃叐鍊嬩汉鍚堟墦锛屾瘡灏忔檪鎵撳嵃9寮�锛屽墖鎵撳嵃瀹岄€欎唤绋夸欢闇€瑕� 60÷9=20/3(灏忔檪)锛屾晠姝ｇ⒑绛旀鐐築銆�
5.绛旀: A
銆愯В鏋愩€戯細鍒楁柟绋�锛岃ō(sh猫)鍘熸湁榛ㄥ摗x浜猴紝鏍规摎(j霉)姣旈噸鍒楁柟绋�(x+5)/(45+5)= x/45+6%
瑙ｅ緱x=18锛屽啀瑷堢畻鏂板叆榛�2鍚嶈伔宸ョ殑鎯呮硜锛屾瘮閲嶇偤(18+5+2)÷50=50%
浠ヤ笂鍏�(n猫i)瀹规槸2020骞撮櫆瑗垮叕鍕�(w霉)鍝¤€冭│鏁�(sh霉)閲忛棞(gu膩n)绯荤反缈�(x铆)(12鏈�13鏃�)銆傚笇鏈涘皪鑰冪敓鏈夋墍骞姪銆傛湁鎰忔効鍫辫€冮櫆瑗垮叕鍕�(w霉)鍝¤€冭│鐨勮€冪敓瑕佹姄绶婃檪闁撳京(f霉)缈�(x铆)鍌欒€�銆�2020闄滆タ鍏嫏(w霉)鍝¤€冭│鍏憡鏆湭鍏竷锛岀偤浜嗛伩鍏嶉尟閬庡牨鍚�锛岃€冪敓鍙互 鍏嶈不闋�(y霉)绱勭煭淇℃彁閱�锛屽強鏅傜嵅鍙栧牨鍚嶆檪闁�銆傞倓鍙互榛炴搳涓嬫柟鍏嶈不涓嬭級鏇村鑰冭│璩囨枡鍝�!
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