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)(3鏈�31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.涓€鍊嬫荡缂告斁婊挎按闇€瑕�30鍒嗛悩锛屾帓鍏変竴娴寸几姘撮渶瑕�50鍒嗛悩锛屽亣濡傚繕瑷橀棞(gu膩n)涓婂嚭姘村彛锛屽皣閫欏€嬫荡缂告斁婊挎按闇€瑕佸灏戝垎閻�?( )
A.65鍒嗛悩
B.75鍒嗛悩
C.85鍒嗛悩
D.95鍒嗛悩
2.鏈嶈寤犵殑宸ヤ汉姣忎汉姣忓ぉ鍙互鐢熺敘(ch菐n)4浠朵笂琛ｆ垨7姊濊げ瀛�锛屼竴浠朵笂琛ｅ拰涓€姊濊げ瀛愮偤涓€濂楁湇瑁�?锛孎(xi脿n)鏈�66鍚嶅伐浜虹敓鐢�(ch菐n)锛屾瘡澶╂渶澶氳兘鐢熺敘(ch菐n)澶氬皯濂楁湇瑁�?( )
A.168
B.188
C.218
D.246
3.涓€杓涘崱杌婇亱绀︾煶锛屾櫞澶╂瘡澶╁彲閬�16娆�锛岄洦澶╂瘡澶╁彧鑳介亱11娆�锛屼竴閫ｉ亱浜嗚嫢骞插ぉ锛屾湁鏅村ぉ锛屼篃鏈夐洦澶�锛屽叾涓洦澶╂瘮鏅村ぉ澶�3澶╋紝浣嗛亱鐨勬鏁�(sh霉)鍗绘瘮鏅村ぉ閬嬬殑娆℃暩(sh霉)灏�27娆�銆傚晱涓€閫ｉ亱浜嗗灏戝ぉ? ( )
A.25
B.26
C.27
D.28
4.璨�5浠剁敳鍟嗗搧鍜�3浠朵箼鍟嗗搧锛岄渶瑕�348鍏�锛屽鏋滆卜3浠剁敳鍟嗗搧鍜�2浠朵箼鍟嗗搧锛岄渶瑕�216鍏�锛岃卜涓€浠剁敳鍟嗗搧闇€瑕佸灏戝厓?( )
A.48
B.46
C.34
D.32
5.鏌愰珮鏍″皪涓€浜涘(xu茅)鐢熼€茶鍟忓嵎瑾�(di脿o)鏌�銆傚湪鎺ュ彈瑾�(di脿o)鏌ョ殑瀛�(xu茅)鐢熶腑锛屾簴(zh菙n)鍌欏弮鍔犳敞鍐婃渻瑷堝斧鑰冭│鐨勬湁63浜�锛屾簴(zh菙n)鍌欏弮鍔犺嫳瑾炲叚绱氳€冭│鐨勬湁89浜猴紝婧�(zh菙n)鍌欏弮鍔犺▓绠楁鑰冭│鐨勬湁47浜�锛屼笁绋€冭│閮芥簴(zh菙n)鍌欏弮鍔犵殑鏈�24浜�锛屾簴(zh菙n)鍌欓伕鎿囧叐绋€冭│閮藉弮鍔犵殑鏈�46浜�锛屼笉鍙冨姞鍏朵腑浠讳綍涓€绋€冭│鐨勯兘15浜�銆傚晱鎺ュ彈瑾�(di脿o)鏌ョ殑瀛�(xu茅)鐢熷叡鏈夊灏戜汉?( )
A.120
B.144
C.177
D.192
涓嬮潰鐐�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)鍙冭€冪瓟妗堬細
1.绛旀: B
銆愯В鏋愩€�
姘寸几鐨勫閲忚鐐哄柈浣�“1”锛岄偅涔堟瘡鍒嗛悩鍙互娉ㄥ叆鐨勬按鍗犳按缂稿閲忕殑1/30锛屾瘡鍒嗛悩鎺掑嚭鐨勬按鍗犳按缂稿閲忕殑1/50銆�
鏍规摎(j霉)椤屾剰锛屾按榫嶉牠鍦ㄦ敞鍏ユ按鐨勫悓鏅�锛岄儴鍒嗘按涔熷湪鎺掑嚭锛屾墍浠ュ闅涗笂姣忓垎閻樻敞鍏ョ殑姘存噳(y墨ng)瑭茬偤1/30-1/50=1/75锛屽墖闇€瑕�75鍒嗛悩鎵嶈兘娉ㄦ豢锛屾晠姝ｇ⒑绛旀鐐築銆�
2.绛旀: A
銆愯В鏋愩€�
鐢遍鎰�锛屾瘡鍊嬪伐浜烘瘡澶╁彲浠ョ敓鐢�(ch菐n)鐨勪笂琛ｅ拰瑜插瓙鐨勬瘮渚嬬偤 4锛�7锛岃浣跨敓鐢�(ch菐n)鐨勬湇瑁濆鏁�(sh霉)鏇村锛屽墖鏈€绲傜敓鐢�(ch菐n)鐨勪笂琛ｅ拰瑜插瓙鏁�(sh霉)閲忚鐩稿悓锛屾墍浠ョ敓鐢�(ch菐n)涓婅。鍜岃げ瀛愮殑宸ヤ汉姣斾緥鐐� 7锛�4锛屾湁66鍚嶅伐浜�锛屽墖鐢熺敘(ch菐n)涓婅。鐨勫伐浜烘暩(sh霉)閲忕偤 66×7/11=42 锛岀敓鐢�(ch菐n)瑜插瓙鐨勫伐浜烘暩(sh霉)閲忕偤 66×4/11=24锛� 鐢熺敘(ch菐n)鏈嶈鏁�(sh霉)閲忔渶澶氱瓑浜� 42×4=168銆傛晠姝ｇ⒑绛旀鐐篈銆�
3.绛旀: C
銆愯В鏋愩€�
鍋囪ō(sh猫)鏅村ぉ闆ㄥぉ鐨勪竴妯ｅ锛岄偅涔堟櫞澶╂瘮闆ㄥぉ澶氶亱杓�?sh霉)鎷囪灃?sh霉)鐐�27+3×11=60娆�銆傜敱浜庢櫞澶╂瘡澶╅亱杓�?sh霉)鎷囪灃?sh霉)姣旈洦澶╁16-11=5娆�銆傛墍浠ュ彲浠ユ眰鍑烘櫞澶╅洦澶╃浉鍚岀殑澶╂暩(sh霉)鐐�60÷(16-11)=12澶�銆傛渶鍚庡緱鍑虹附鐨勫ぉ鏁�(sh霉)鐐�12×2+3=27澶�銆�
4.绛旀: A
銆愯В鏋愩€�
鐢遍鎰忓彲鐭�锛�10浠剁敳鍜�6浠朵箼鐨勫児鏍肩偤348×2=696锛�9浠剁敳鍜�6浠朵箼鐨勫児鏍肩偤216×3=648锛岄’鐒朵竴浠剁敳鍟嗗搧鐨勫児鏍肩偤696-648=48鍏�锛屾晠绛旀鐐篈銆�
5.绛旀: A
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鍋囪ō(sh猫)鍙弮鍔犱竴绋€冭│鐨勬湁X浜�锛屽墖鍙煡锛歑+46×2+24×3=63+89+47锛屽彲鐭=35锛屽洜姝ゆ帴鍙楄(di脿o)鏌ョ殑瀛�(xu茅)鐢熷叡鏈�35+46+24+15=120浜�銆傛晠姝ｇ⒑绛旀鐐篈銆�
娉細灏囧彧绗﹀悎涓€鍊嬫浠�銆佸彧绗﹀悎鍏╁€嬫浠跺拰涓夊€嬫浠堕兘绗﹀悎鐨勫垎鍒ョ湅浣滀笁鍊嬫暣楂�锛屼互A銆丅銆丆琛ㄧず涓夊€嬮泦鍚堬紝浠銆乊銆乑鍒嗗垾琛ㄧず鍙鍚堜竴鍊嬫浠�銆佸彧绗﹀悎鍏╁€嬫浠跺拰涓夊€嬫浠堕兘婊胯冻鐨勯儴鍒�锛屽墖鏈堿+B+C=X+2Y+3Z鍙夾∪B∪C=X+Y+Z鎴愮珛銆�
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