在电解水时,在水中加入氢氧化钠溶液或稀硫酸,目的是______;若正极产生5ml

题型:填空题

问题:

在电解水时,在水中加入氢氧化钠溶液或稀硫酸,目的是______;若正极产生5ml的某气体,该气体是______,则负极会产生______ml的______气体.该反应的文字表达式是______.

考点:电解水实验
题型:填空题

A girl complained to her father about her hard life. She didn’t know what she had to do and wanted to 36 . She felt tired for fighting and fighting. One problem had been finished but another came.
Her father,  a cook,  took her 37 the kitchen. He poured water into three pans(锅)and boiled(煮)it. When the water was boiling,  in the first pan he put some carrots,  in the 38 he put some eggs and in the last he put some coffee. He    39      them for a few minutes without any words.
The girl closed her mouth and waited impatiently,  not knowing  40   her father was doing that. After about 20 minutes,  her father turned    41   the stove,  took out the carrots and put them in a bowl. He took out the eggs and put 42    in another bowl. After that the  43   was poured into a cup. Turning back to his daughter,  he asked,  "What do you   44   ?" "Carrots,  eggs,  and coffee, " she answered.
Her father told her to 45 her eyes and let her touch the carrots. She did and felt that the carrots were soft. After that he asked her to take the eggs and 46 them. Then,  she got the eggs,  cooked and hard. At last,  the father asked her to smell the coffee. "What’s the meaning,  Father?" He 47 that each had suffered the same unlucky experience— the boiling water,  but 48 had a different reaction(反应). The strong and hard carrots had become soft and weak after being in the boiling water. The eggs became hard 49 being cooked. The coffee was very special and it changed the wa­ter. "Who are you?" asked her father,  "When calamity(厄运) 50 your door,  what’s your reaction? Are you carrots,  eggs,  or coffee?"
小题1:
A.grow upB.give upC.set upD.pick up
小题2:
A.intoB.withinC.out ofD.away from
小题3:
A.firstB.secondC.thirdD.fourth
小题4:
A.looked forB.searched forC.waited forD.called for
小题5:
A.thatB.whatC.whereD.why
小题6:
A.onB.overC.offD.in
小题7:
A.itB.itsC.themD.themselves
小题8:
A.eggsB.carrotsC.coffeeD.water
小题9:
A.hearB.tasteC.smellD.see
小题10:
A.closeB.openC.washD.drop
小题11:
A.keepB.protectC.breakD.drink
小题12:
A.complainedB.explainedC.toldD.expected
小题13:
A.everyB.allC.eachD.either
小题14:
A.beforeB.afterC.behindD.under
小题15:
A.lies inB.comes acrossC.meets withD.knocks at
题型:填空题

下图这张照片是邓 * * 1979年在游黄山时与几名复旦大学学生的合影。对该照片反映的历史信息表述正确的是     

①国家已经恢复高考制度

②复旦大学已被列入“211工程”

③当时已经启动“希望工程”,大量农村贫困学生得以考人大学

④邓 * * 已经提出“教育要面向现代化、面向世界、面向未来”  

[ ]

A、①    

B、①② 

C、①③    

D、①②③④

题型:填空题

开户单位(或个人)领购重要空白凭证时,填写一式两联的“凭证出售单”,加盖预留印鉴,柜员核对、领购()无误后,向凭证管理员申请调拨相关凭证。

A.凭证内容

B.数量

C.金额

D.印鉴

题型:填空题

以下词语不表示“只”、“仅仅”义的是()

A."岂直规规治疾方术已哉"的"直"

B."苞无穷,协惟一"的"惟"

C."第以人心积习既久"的"第"

D."众药聚门,适足多疑"的"适"

E."即病者亦但知膏肓难挽"的"但"

题型:填空题

可以在体内转变成维生素A的是()。

A.隐黄素

B.玉米黄素

C.辣椒红素

D.叶黄素

E.番茄红素

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