水是生命之源,溶液遍布生活的每一个角落. (1)下列微粒结构图示中,能表示水分子

题型:问答题

问题:

水是生命之源,溶液遍布生活的每一个角落.

(1)下列微粒结构图示中,能表示水分子的是______

(2)鱼类可以在自然界的水中呼吸,是因为水中溶解有______.

A.O2B.2OC.OD.O2-

(3)水是常用的溶剂,下列溶液所用的溶剂不是水的是______

A.稀盐酸B.生理盐水C.碘酒溶液D.葡萄糖注射液

(4)向水中加入______后振荡,可以根据产生泡沫多少来鉴别硬水和软水

A.稀硫酸B.食盐C.肥皂水D.石灰水

(5)硬水对生活的危害很大,生活中经常通过______降低水的硬度

A.蒸馏B.煮沸C.过滤D.消毒

(6)下列反应中,属于有水生成的化合反应是______;有水生成的分解反应是______

A.氢气燃烧B.二氧化碳通入石灰水C.电解水D.加热碳酸氢铵

(7)给45g溶质质量分数为8%的稀硫酸通直流电(实质是水在通电条件下分解,硫酸没消耗)一段时间后,下列各组数据中,合理的是______

A.B.C.D.
溶质质量分数10%10%12%12%
正极气体质量(g)18232
负极气体质量(g)81322

考点:水的性质和用途
题型:问答题
Mary’s dime(一毛钱)
It was Sunday afternoon. I decided to clean up the room nicely so that my parents would feel   1  when they returned from a long ride! Then, I sat in the room, having nothing to do.
   What else could I do? Then, with no reason, I suddenly  2  the pale face of that little beggar(乞丐) girl. I could see the glad light   3  her eyes when I put the dime in her little dirty hand.
    How much I  4  that dime, too! Grandpa gave it to me a whole month ago, and I had kept it ever since in my red box upstairs, but those sugar apples looked so attractive, and were so   5  — only a dime a piece — that I wanted to have one.
    I could imagine the little girl stood there in front of the  6  in her old dirty dress, looking at the   7  that were put all in a row in the window. I wonder what I should say, “Little girl, what do you want?” I gently asked. She felt   8  and looked straight at me, just as if(似乎)nobody had spoken so   9  to her before. She realized what I had meant, so she said seriously and sadly. “I was thinking how good one of those delicious hamburgers would  10 . I haven’t had anything to eat today.”
   Now I thought to myself, “Mary Williams, you have had a good breakfast and a good lunch today,   11  this poor girl has not had a mouthful yet. You can give her your  12 . She needs it a great deal more than you do.”
   I could not run away from that little girl’s sad,  13  look — so I dropped the dime right into her hand. How  14  the girl was! I am so glad I gave her the dime,  15  I had to go without the apple lying there in the window.
小题1:
A.disturbedB.unhappyC.satisfiedD.interested
小题2:
A.saw B.rememberedC.forgotD.described
小题3:
A.fillingB.protectingC.attractingD.touching
小题4:
A.hatedB.lovedC.missedD.noticed
小题5:
A.valuableB.meaningfulC.expensiveD.cheap
小题6:
A.marketB.libraryC.storeD.bookshop
小题7:
A.dressesB.magazinesC.booksD.candies
小题8:
A.surprisedB.excitedC.pleasedD.worried
小题9:
A.happilyB.kindlyC.angrilyD.sadly
小题10:
A.tasteB.soundC.feelD.smell
小题11:
A.sinceB.soC.andD.but
小题12:
A.appleB.hamburgerC.dimeD.candy
小题13:
A.proudB.angryC.calmD.hungry
小题14:
A.gratefulB.unluckyC.lonelyD.friendly
小题15:
A.unlessB.if C.thoughD.because
题型:问答题

以下不属于股份登记的是()。

A.发放现金股利登记

B.首次公开发行登记

C.增发新股登记

D.配股登记

题型:问答题

脑血管意外发病最急的是__________。

题型:问答题

重度核左移指外周血白细胞分类计数结果中杆状核中性粒细胞的比值()

A.>1%

B.>5%

C.>10%

D.>15%

E.>25%

题型:问答题

不良贷款率是评价商业银行信贷资产安全状况的重要指标之一,不良贷款率越高,可能无法收回的贷款占总贷款的比例越大。

更多题库