问题 实验题

(1)下列实验操作或对实验事实的描述不正确的是_________(填序号)。

A.不宜用瓷坩埚灼烧氢氧化钠或碳酸钠

.使用容量瓶配制溶液时,俯视刻度线定容后所得溶液浓度偏大

C.分液操作时,由于分液漏斗下端已沾满下层液体,故上层液体要从上口倒出

D.用托盘天平称量11.74g氯化钠晶体 E.用结晶法分离硝酸钾和氯化钠的混合物

(2)实验室需要0.1 mol/L NaOH溶液450 mL和0.5 mol/L硫酸溶液500 mL。根据这两种溶液的配制情况回答下列问题:

①如图所示的仪器中配制溶液肯定不需要的是________(填序号);配制上述溶液还需用到的玻璃仪器是_________________________(填仪器名称)。

②下列操作中,容量瓶所不具备的功能有________(填序号)。

A.配制一定体积准确浓度的标准溶液              

B.贮存溶液

C.测量容量瓶规格以下的任意体积的液体

D.准确稀释某一浓度的溶液      

E.用来加热溶解固体溶质

③请计算需用托盘天平称取固体NaOH的质量为______g。某同学用托盘天平称量烧杯的质量,天平平衡后的状态如图.由图中可以看出,烧杯的实际质量为________g。

 ④根据计算得知,所需质量分数为98%、密度为1.84 g/cm3的浓硫酸的体积为__________mL(计算结果保留一位小数)。配制过程中需先在烧杯中将浓硫酸进行稀释,稀释时操作方法是_________________________________。

答案

(1)D

(2)①AC ;烧杯、玻璃棒; ②BE;③2.0;27.4;④13.6;将浓硫酸沿烧杯内壁缓缓注入水中,并用玻璃棒不断搅拌

阅读理解

阅读理解

     When I asked my daughter which item she would keep; the phone, the car, the cooker, the computer,

the TV, or her boyfriend, she said "the phone". Personally, I could do without the phone entirely, which

makes me unusual. Because the telephone is changing our lives more than any other piece of technology.

     Point 1 - The telephone creates the need to communicate, in the same way that more roads create

more traffic. My daughter comes home from school at 4:00 pm and then spends an hour on the phone

talking to the very people she has been at school with all day. If the phone did not exist, would she have an

ything to talk about?

     Point 2 - The mobile phone means that we are never alone. "The mobile saved my life," says Crystal

Johnstone. She had an accident in her Volvo on the A45 between Otley and Skipton. Trapped inside, she

managed to make the call that brought the ambulance(救护车) to her rescue.

     Point 3 - The mobile removes our secret. It allows marketing manager of Haba Deutsch, Carl

Nicolaisen, to ring his sales staff all round the world at and time of day to ask where they are , where they

are going, and how their last meeting went.

     Point 4 - The telephone separates us. Antonella Bramante in Rome says, "We worked in separate

offices but I could see him through the window. It was easy to get his number. We were so near--but we

didn't meet for the first two weeks!"

     Point -5 The telephone allows us to reach out beyond our own lives. Today we can talk to several

complete strangers simultaneously ( 同时地) on chat lines (at least my daughter does. I wouldn't know

what to talk about). We can talk across the world. We can even talk to astronauts (if you know any) while

they're space-walking. And, with the phone line hooked up to the computer, we can access(存取) the

Internet, the biggest library on Earth.

1.How do you understand 'Point 1 -The telephone creates the need to communicate,…'?

A. People don't communicate without telephone.

B. People communicate because of the creating of the telephone.

C. People communicate more since telephone has been created.

D. People communicate more because of more traffic.

2.Which of the following best shows people's attitude towards mobile phones?

A. Mobile phones help people deal with the emergency.

B. Mobile phones bring convenience as well little secret to people.

C. Mobile phones are so important and should be encouraged.

D. Mobile phones are part of people's life.

3. Which points do you think support the idea that phones improve people's life?

a. Point 1. b. Point2. c. Point3. d. Point 4. e. Point 5.

A. c, d

B. a, e

C. a, c

D. b, e

4.It is possible to talk to several complete strangers simultaneously through _____

A. the TV screen

B. a fax machine

C. the phone line hooked up to the computer

D. a microphone

5.The best heading for the passage is _____.

A. phone Power

B. Kinds of Phone

C. how to Use Phones

D. Advantage of Phones

单项选择题

当下社会语言中产生了许多新词,“美女”算是其中之一,因为它已经不是传统语意上的“美女”了,而是几乎泛指一切女性。“美女”一词的滥用,似乎发端于文学界,所谓“美女作家”。当从文学自身寻找价值比较艰难的时候,从语言学角度去寻找,反而显得容易些了,这也许可以算作中国文学对于语言学的新贡献吧。继女作家统统被称为“美女作家”之后,电视上每出现一位女教授,都会被称为“美女教授”。现在到商场去买东西,都会有营业员凑上来问:“美女,买什么”
在“美女”中,“美”已经成为虚词,没有任何实际意义了。“美女”对语言学带来了新的挑战,那就是需要重新定义“美”的内涵。如果从前称美女是对女性美的赞赏的话,现在已经完全沦为一种轻薄了。而且,从前的人含蓄,似乎很少在口语中直呼一个人为“美女”,哪怕她真的是一个美女。这不是审美的个体差异问题,也不是情人眼里出西施的特定审美现象,而是“美”字的滥用和美女称谓的泛化。就拿文化界来说,百姓对于知识女性的面孔可能是存在着“阅读定势”的,一看没到丑的地步,“美女”一词就脱口而出了,所以,现在大家需要区分的不是谁是“美女作家”、“美女教授”,而是谁不是“美女作家”、“美女教授”了。当特殊取代一般时,人们所做的就不是从一般中区别特殊,而是从特殊中区别一般了。
一个词汇的运用越是被泛化,意义也就越是被抽空。汉语中有很多词已经被用死掉了,属于一用就滥,一滥就死,比如文化、愿景等等。在文化界,死掉的词可能还有“大师”和“伟大”。评价一个文化人,动辄就是“大师”;评价一件文化产品,动辄就是“伟大”;一个二流作家可以被称为“大师”,一部三流小说可以被称为“伟大”作品。为什么会这样呢原因很简单,这个时代恰恰无大师,恰恰不伟大,才导致了“大师”与“伟大”词汇的泛滥。真正在大师辈出的伟大时代,“大师”与“伟大”这两个词反而是很少用的,大家在谦虚认真地思考、交流与商榷,而不是随随便便把“大师”和“伟大”的帽子一扣拉倒。只有目力不逮的人,才会到处乱扣“大师”与“伟大”的帽子。
苏联解体以后,“同志”不好再称呼了,俄罗斯人不知所措,干脆称呼:男人、女人。于是,有人在喊一个人,却能引起半条街的回头率。“男人”和“女人”可以成为一种称谓,似乎是回到了对人的最本质、最普世的称谓层面,但也消解了语言的存在价值,实际上是语言的悲哀。“美女”所显示的,也是语言的滑稽与悲哀,对于用词和称谓的不加节制,有一天也许会导致中国人只能相互称“男人”和“女人”的尴尬境地了。“美女”一词的泛化体现的恰恰是语义的匮乏,以及词语尊严的下滑和人的漫不经心。

根据本文,下列说法正确的是______。

A.“美女”一词的滥用是词语滥用的发端
B.俄罗斯人互称“男人”“女人”体现了语言泛化问题
C.运用频率越高的词语,其意义也就越抽象
D.现代意义上的大师和传统意义上的区别在于包括了二流作家