试题与答案

向某NaOH溶液中通入CO2气体后得溶液M。因CO2通入量的不同,溶液M的组成也

题型:选择题

题目:

向某NaOH溶液中通入CO2气体后得溶液M。因CO2通入量的不同,溶液M的组成也不同。若向M中逐滴加入盐酸并轻轻振荡,理论上产生的气体体积V(CO2)与加入盐酸的体积V(HCl)的关系有下列图示四种情况,且图乙、丙、丁 中分别有OA<OB、OA=AB、OA>AB,则下列分析与判断不正确的是(不计CO2的溶解)

[ ]

A.M中只有一种溶质的有甲和丙

B.M中有两种溶质的有乙和丁

C.M中一定存在:c(Na+)- 2c(CO32-)=c(HCO3-)+c(OH-)-c(H+)

D.乙图显示M中c(NaHCO3)>c(Na2CO3)

答案:

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题型:阅读理解

     Many people do not like to stay at home on holidays.They want to go out to see something

different or do something interesting.So people from the country come to the city and people

from the city go to the country for holidays.During the holidays trains,buses and planes are all

very busy.It is very hard to buy train tickets or air tickets.Many people take cars or buses for

traveling.

     Last May Day my family went to the country by car for our holiday.There was too much

traffic on the road,so we had to move very slowly.It took us about an hour to get out of the

town.After some time,we came to a hill.It was green and beautiful.We thought this was a good

place for a picnic,so we stopped and took the food,fruit and drinks out of the car.We sat down

and began to eat.Suddenly a strong wind blew and soon it started to rain.We had to run back

to our car and have our picnic in the car.Then we drove back home.What a sad holiday!

1.Which one is right in the following sentence?

A.Many people like staying at home on holidays.

B.People living in the city often go to another city for traveling.

C.It is easy to buy a ticket on holidays.

D.Many people take cars or buses for traveling.

2.How did they go to the country last May Day?

A.By car.

B.By train.

C.By bus.

D.On foot.

3.How long did they take to get out of the town?

A.Half an hour.

B.An hour.

C.One and half an hour.

D.Two hours.

4.Why did they go to the country?

A.To take some pictures.

B.To cook dinner.

C.To have a picnic.

D.To go sightseeing.

5.They felt ________ about the holiday.

A.happy

B.excited

C.unhappy

D.lucky

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题型:单项选择题

甲、乙、丙三人都参加了今年的高考,考完后几个人在一起议论。甲说:“我今年一定能考上重点大学”。乙说:“我不会考上重点大学的”。丙说:“如果不考虑重点大学的话,我考上大学肯定没问题”。后来的事实证明,三人中考取重点大学的、考上一般大学的和没考上大学的各有一人,而且他们事前所说的话中只有一人是对的,另外两人的预计都错了,由此可知()

A.甲没考上大学,乙考上了一般大学,丙考上了重点大学

B.甲考上了一般大学,乙考上了重点大学,丙没考上

C.甲考上了重点大学,乙考上了一般大学,丙没考上大学

D.甲没考上大学,乙考上了重点大学,丙考上了一般大学

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