Li's grandmother 八年级上册英语期末试卷
\u82f1\u8bed\u5b8c\u5f62\u586b\u7a7aTraffic rules are made to keep order on the road. They also help to people \u2474\uff3f.
The pedestrian has as many rules to \u2475\uff3fas the driver of the car. You should walk at the sidewalk or at the\u2476\uff3f of the road. Always look carefully before you walk across the street.
If you like riding a bike, don't ride in the middle of the road or run\u2477 \uff3f red traffic lights. When you ride a bike with a friend, don't look around to talk.
If you drive, you should\u2478\uff3fat the traffic lights. You must always\u2479\uff3f a seat belt. Without belts\u247a\uff3fthe driver and the passengers may be thrown out through the window.
You may not need to drive a bus, but\u247b\uff3f if you have to travel in one. Get in or get off a bus only when it has come to a \u247c\uff3f. When it is full ,don't try to get inside\u247d \uff3fyou may fall off .
Traffic rules are also called Road Safey rules. The maxim for all road users is "thinking about others ."
1.A.healthy B.safe C.happy D.careful
2.A.follow B.make C.break D.pass
3.A.edge B.rim C.end D.side
4.A.through B.across C.along D.around
5.A.speed up B.go ahead C.get off D.slow down
6.A.take B.waer C.carry D.bring
7.A.half B.neither C.both D.all
8.A.look around B.take care C.take a seat D.look back
9.A.sign B.stop C.corner D.corossing
10.A.and B.so C.or D.but
1\uff0d5BADAD 6\uff0d10BCBBC\uff0d
\u8fd9\u4e2a\u53ef\u4ee5\u5427\uff01
\u6211\u82b1\u4e86\u5f88\u591a\u65f6\u95f4\u554a\u3002
\u4e0d\u8981\u8f9c\u8d1f\u6211\u7684\u4e00\u7247\u597d\u5fc3\u554a\u3002
\u795d\u4f60\u4e2d\u8003\u987a\u5229\u5427\uff01
绛旓細鈥淟鈥濅唬琛ㄧ殑鏄姞闀胯酱璺濈増锛岀幇鍦ㄧ殑寰堝鍔犻暱杞磋窛杞﹀瀷閮芥槸浠モ淟鈥濅负鏍囩ず鐨勶紱鑰岄偅涓渋鈥濊〃绀虹殑鏄數鍠峰彂鍔ㄦ満鐨勬剰鎬濄
绛旓細瀹為獙瀹や腑閿傞噾灞炰竴鑸繚瀛樺湪骞茬嚗鐨勬儼鎬ф皵浣撶幆澧冧腑瀹為獙瀹や腑閿備繚瀛樺湪娑蹭綋鐭宠湣鎴栧皝瀛樺湪鍥轰綋鐨勭煶铚′腑鏀惧湪鐓ゆ补涓殑璇濓紝涔熸槸娴湪琛ㄩ潰锛屼笉鑳介殧缁濈┖姘斻傞攤閫氬父鍦ㄥ浐浣撶煶铚℃垨鑰呯櫧鍑″＋鏋椾腑淇濆瓨閲戝睘閿傚緢娲绘臣锛岄渶闅旂粷绌烘皵鍌ㄥ瓨璐瓨鍜屼娇鐢ㄩ兘瑕佹敞鎰忓畨鍏紝鐢遍噾灞為攤寮曡捣鐨勭伀鐏撅紝涓嶈兘鐢ㄦ按鎴栨场娌伃鐏墏鎵戠伃锛岃岃鐢ㄧ⒊閰搁挔骞茬矇閿...
绛旓細閿傜熆鏄寚鑷劧鐢熸垚鐨勫彲浠ョ粡娴庡紑閲囩殑閿傝祫婧愶紝鍦ㄨ嚜鐒剁晫涓凡鍙戠幇閿傜熆鐗╁拰鍚攤鐭挎湁150澶氱銆傞攤(Li)鏄嚜鐒剁晫涓渶杞荤殑閲戝睘銆傞摱鐧借壊锛屾瘮閲0.534锛岀啍鐐180鈩冿紝娌哥偣1347鈩冦傞攤涓虹█纰卞厓绱犱箣涓锛屽湪鑷劧鐣屽垎甯冩瘮杈冨箍娉涳紝浣滀负鍒跺彇閿傜殑鐭跨墿鍘熸枡涓昏鏄攤杈夌煶銆侀攤浜戞瘝銆佺７閿傞摑鐭炽侀忛攤闀跨煶鍙婇搧閿備簯姣)锛屽叾涓墠3涓...
绛旓細6.9405 閿傦紝鑻辨枃鍚嶇О锛歀ithium锛屽厓绱犵鍙Li锛屽厓绱犲懆鏈熻〃涓師瀛愬簭鏁3锛屾槸IA鏃忛噾灞炲厓绱犮傚瘑搴︿负0.534鍏/绔嬫柟鍘樼背锛岀啍鐐逛负180.50掳C (453.65 K锛356.90掳F)锛屾哺鐐逛负342掳C (1615 K锛2448掳F)銆傞攤鏄竴绉嶉摱鐧借壊鐨勭⒈閲戝睘鍏冪礌锛岃川杞紝瀹规槗鍙楀埌姘у寲鑰屽彉鏆楋紝鏄墍鏈夐噾灞炲厓绱犱腑鏈杞荤殑銆備笌鍏朵粬纰遍噾灞...
绛旓細閿傦紝鍘熷瓙搴忔暟3锛屽師瀛愰噺6.941锛屾槸鏈杞荤殑纰遍噾灞炲厓绱犮傚厓绱犲悕鏉ユ簮浜庡笇鑵婃枃锛屽師鎰忔槸鈥滅煶澶粹濄1817骞寸敱鐟炲吀绉戝瀹堕樋寮楅煢鑱湪鍒嗘瀽閫忛攤闀跨煶鐭挎椂鍙戠幇銆傝嚜鐒剁晫涓富瑕佺殑閿傜熆鐗╀负閿傝緣鐭炽侀攤浜戞瘝銆侀忛攤闀跨煶鍜岀７閾濈煶绛夈傚湪浜哄拰鍔ㄧ墿鏈轰綋銆佸湡澹ゅ拰鐭挎硥姘淬佸彲鍙矇銆佺儫鍙躲佹捣钘讳腑閮借兘鎵惧埌閿傘傚ぉ鐒堕攤鏈変袱绉嶅悓浣嶇礌锛氶攤6...
绛旓細娌哥偣锛1347.0鈩 鐢甸樆鐜: 8.6渭惟路cm 瀵肩儹绯绘暟: 0.847W/(cmK)姣旂儹: 3.6J/(gK)钂稿彂鐑: 145.92kJ/mol 鐔斿寲鐑: 3kJ/(gK)鐢电鑳: 5.392eV 澶栧洿鐢靛瓙鎺掑竷锛2s1 鏍稿鐢靛瓙鎺掑竷锛2,1 棰滆壊鍜岀姸鎬侊細閾剁櫧鑹查噾灞 鍘熷瓙鍗婂緞锛0.152nm 甯歌鍖栧悎浠凤細+1 鍙戠幇浜猴細闃垮皵璐瑰痉妫 閲戝睘閿備负涓绉嶉摱鐧借壊鐨...
绛旓細閿傚湪鍏冪礌鍛ㄦ湡琛ㄧ殑浣嶇疆锛氶攤鏄湪鍏冪礌鍛ㄦ湡琛ㄤ笂鎺掑湪绗竴浣嶇殑纰遍噾灞炲厓绱 銆 閿傚湪鍏冪礌鍛ㄦ湡琛ㄤ腑浣嶄簬纰遍噾灞炵殑鏈涓婃柟銆傚寲瀛﹀厓绱犲懆鏈熻〃(Periodic table of elements)鏄牴鎹師瀛愰噺浠庡皬鑷冲ぇ鎺掑簭鐨勫寲瀛﹀厓绱犲垪琛ㄣ傚垪琛ㄥぇ浣撳憟闀挎柟褰紝鏌愪簺鍏冪礌鍛ㄦ湡涓暀鏈夌┖鏍硷紝浣跨壒鎬х浉杩戠殑鍏冪礌褰掑湪鍚屼竴鏃忎腑锛屽纰遍噾灞炲厓绱犮佺⒈鍦熼噾灞炪...
绛旓細1銆侀攤涓昏浠ョ‖鑴傞吀閿傜殑褰㈠紡鐢ㄤ綔娑︽粦鑴傜殑澧炵鍓傘傝繖绉嶆鼎婊戝墏鍏兼湁楂樻姉姘存с佽愰珮娓╁拰鑹ソ鐨勪綆娓╂ц兘銆2銆侀攤鍖栫墿鐢ㄤ簬闄剁摲鍒跺搧涓紝浠ヨ捣鍒板姪婧跺墏鐨勪綔鐢ㄣ3銆侀攤鍦ㄥ喍閲戝伐涓氫腑涔熺敤鏉ヤ綔鑴辨哀鍓傛垨鑴辨隘鍓傦紝浠ュ強閾呭熀杞存壙鍚堥噾銆4銆侀攤涔熸槸閾嶃侀晛銆侀摑杞昏川鍚堥噾鐨勯噸瑕佹垚鍒嗐傞攤鑳芥敼鍠勯犺鍔熻兘锛屾彁楂樹汉浣撳厤鐤満鑳姐5銆侀攤...
绛旓細閿備笌姘村弽搴斾細浜х敓婧村寲閿傚拰姘㈡皵銆傚弽搴旀柟绋嬪紡涓2Li+2H2O=2LiOH+H2銆傝繖涓弽搴旀柟绋嬪紡琛ㄧず浜嗗綋涓や釜閿傚師瀛愪笌涓や釜姘村垎瀛愮浉閬囨椂浼氬彂鐢熶粈涔堛傚湪杩欎釜杩囩▼涓紝閿傚師瀛愪細澶卞幓涓涓數瀛愶紝骞朵笖灏嗗叾浼犻掔粰姘村垎瀛愪腑鐨勬阿绂诲瓙銆傝繖灏嗗鑷存阿绂诲瓙涓庢哀绂诲瓙缁撳悎褰㈡垚姘村垎瀛愶紝骞朵笖浜х敓浜嗘阿姘斻傛嫇灞曠煡璇:1銆侀攤鏄竴绉嶅寲瀛﹀厓绱狅紝瀹冩槸...
绛旓細鐢变簬閿傜殑绂讳簬鍗婂緞灏忥紝鏋佸寲鍔涜緝澶э紝閿傚強鍏跺寲鍚堢墿鍦ㄨ澶氭ц川鏂归潰涓庘厾鏃忓厓绱犵殑涓嶅悓锛岃〃鐜板嚭涓庘叀A鏃忓厓绱犻晛鐨勭浉浼兼с傞攤鐨勭壒娈婃ц川涓昏琛ㄧ幇鍦紱 1锛庨攤鐨勭啍銆佹哺鐐归珮锛岀‖搴﹀ぇ銆 2锛庨攤涓庢哀姘斿弽搴斿彧鐢熸垚鏅氭哀鍖栫墿Li2O銆 3锛庨攤鐨勫寲鍚堢墿LiOH銆丩i2CO3銆丩iNO3鐑ǔ瀹氭у樊锛屽姞鐑彲鍒嗚В涓篖i2O銆傚锛 2LiN03Li2O...
