问题 填空题

(共8分) A、B、C、D四种可溶性盐,它们的阳离子分别可能是Ba2、Ag

Na、Cu2中的某一种,阴离子分别可能是、S、Cl、C的某一种。

(1)若把四种盐分别溶于盛有蒸馏水的四支试管中,只有C盐的溶液呈蓝色。

(2)若向(1)的四支试管中分别加盐酸,B盐溶液有沉淀产生,D盐溶液有无色无味气体逸出。

根据(1) 、(2)实验事实可推断它们的化学式为:

A.             B.           C.           D.          

答案

(8分)    BaCl2                AgNO3           CuSO4           Na2CO3

阅读理解

阅读理解。

     There was a gardener who looked after his garden with great care.To water his flowers,he used

two buckets.One was a shiny and new bucket.The other was a very old and dilapidated one,which

 had seen many years of service,but was now past its best.

     Every morning,the gardener would fill up the two buckets.Then he would carry them along the

path,one on each side,to the flowerbeds.The new bucket was very proud of itself.It could carry a full

bucket of water without a single drop spilled (溢出).The old bucket felt very ashamed because of

its holes:before it reached the flowerbeds,much water had leaked along the path.

     Sometimes the new bucket would say,"See how capable I am!How good it is that the gardener

has me to water the flowers every day!I don't know why he still bothers with you.What a waste of

space you are!"

     And all that the old bucket could say was,"I know I'm not very useful,but I can only do my best.

I'm happy that the gardener still finds  a little bit of use in me,at least."

     One day,the gardener heard that kind of conversation.After watering the flowers as usual,he said,

"You both have done your work very well.Now I am going to carry you back.I want you to look

carefully along the path."

     Then the two buckets did so.All along the path,they noticed,on the side where the new bucket was

carried,there was just bare(光秃秃的) earth;on the other side where the old bucket was carried,

there was a joyous row of wild flowers,leading all the way to the garden.

1.What does the underlined word "dilapidated" probably mean?

A.   Dirty.  

B.   Dark.

C.Wornout.  

D.Plainlooking

2.What was the old bucket ashamed of?

A.   His past.  

B.His aging.

C.   His manner.  

D.His leaking.

3.The new bucket made conversations with the old one mainly to________.

A. laugh at the old one

B. take pity on the old one

C. show off its beautiful looks

D. praise the gardener's kindness

4.Why was the old bucket still kept by the gardener?

A. Because it was used to keep a balance.

B. Because it stayed in its best condition.

C. Because it was taken as a treasure.

D. Because it had its own function.

单项选择题