问题 问答题

根据下列装置图回答:

(1)写出图中仪器a和b的名称:a______,b______.

(2)装置C中产生的现象是______.

(3)装置D中产生的现象是______.

(4)装置E处气体燃烧时产生______色火焰.

(5)装置A中反应的化学方程式是______.

(6)装置B中反应的化学方程式是______.

(7)装置C中反应的化学方程式是______.

答案

答:(1)(1)仪器①、②的名称分别是:长颈漏斗,酒精灯;

(2)大理石和稀盐酸反应生成二氧化碳,二氧化碳在高温的条件下被还原成一氧化碳,一氧化碳在高温的条件下把黑色的氧化铜还原成光亮的红色的铜,所以黑色粉末逐渐变成光亮的红色粉末;故答案为:黑色粉末逐渐变成光亮的红色粉末

(3)因为一氧化碳和氧化铜反应生成二氧化碳,二氧化碳使澄清的石灰水变浑浊,故答案为:澄清的石灰水变浑浊

(4)E处是含有未反应的一氧化碳的尾气燃烧,火焰呈蓝色,故答案为:蓝

(5)A处是大理石和稀盐酸反应生成氯化钙、水和二氧化碳,故答案为:CaCO3+2HCl=CaCl2+H2O+CO2

(6)B处是二氧化碳在高温的条件下被还原成一氧化碳,故答案为:C+CO2

 高温 
.
 
2CO

(7)C处是一氧化碳在高温的条件下把黑色的氧化铜还原成光亮的红色的铜和二氧化碳,故答案为:CuO+CO

  △  
.
 
Cu+CO2

单项选择题 A1/A2型题
完形填空

第二节 完形填空(共20小题;每小题1.5,满分30分)

阅读下面短文,从短文后各题所给的四个选项(A、B、C和D)出可以填入空白的最佳选项,并在答题卡上将该项涂黑。

One summer night, on my way home from work I decided to see a movie. I knew the theatre would be air-conditioned and I couldn’t face my 1_____ apartment. Sitting in the theatre I had to look through the 2_____between the two tall heads in front of me. I had to keep changing the 3____every time she leaned over to talk to him. 4_____ he leaned over to kiss her. Why do Americans display such 5____ in a public place? I thought the movie would be good for my English, but 6_____ it turned out, it was an Italian movie. 7____ about an hour I decided to give up on the movie and 8_____ on my popcorn. I’ve never understood why they give you so much popcorn! It tasted pretty good, 9____. Afetr a while I heard 10____ more of the romantic-sounding Italians. I just heard the 11____ of the popcorn crunching(咀嚼) between my teeth. My thought started to 12 _____. I remembered when I was in South Korea, I 13 ____ to watch Kojak on TV frequently.

He spoke perfect Korean-I was really amazed. He seemed like a good friend to me, 14____I saw him again in NewYork speaking 15_____English instead of perfect Korean. He didn’t even have a Korean accent and I 16_____like I had been betrayed(背叛). When our family moved to the United States six years ago, none of us spoke any English. 17____we had begun to learn a few words, my mother suggested that we all should speak English at home. Everyone agreed, but our house became very 18_____ and we all seemed to avoid each other. We sat at the dinner table in silence, preferring that to 19____ in a difficult language. Mother tried to say something in English but it 20_____ out all wrong and we all burst into laughter and decided to forget it! We’ve been speaking Korean at home ever since.

小题1:.

A.warm

B.hot

C.heated

D.cool小题2:.

A.crack

B.blank

C.break

D.opening小题3:.

A.seat

B.view

C.space

D.angle小题4:.

A.while

B.whenever

C.or

D.and小题5:.

A.attraction

B.attention

C.affection

D.motion小题6:.

A.since

B.when

C.what

D.as小题7:.

A.Within

B.After

C.For

D.Over小题8:.

A.set

B.chew

C.fix

D.taste小题9:.

A.too

B.still

C.though

D.certainly小题10:.

A.much

B.any

C.no

D.few小题11:.

A.voice

B.sound

C.rhythm

D.tone小题12:.

A.wonder

B.imagine

C.wander

D.depart小题13:.

A.enjoyed

B.happened

C.turned

D.used小题14:.

A.until

B.because

C.then

D.therefore小题15:.

A.false

B.informal

C.perfect

D.practical小题16:.

A.felt

B.looked

C.seemed

D.appeared小题17:.

A.While

B.Before

C.If

D.Once小题18:.

A.empty

B.quiet

C.noisy

D.calm小题19:.

A.telling

B.shouting

C.saying

D.speaking小题20:.

A.worked

B.got

C.came

D.made