试题与答案

(4分)X、Y两种固体物质的溶解度曲线如图所示。回答下列问题: (1)由X、Y

题型:填空题

题目:

(4分)X、Y两种固体物质的溶解度曲线如图所示。回答下列问题:

(1)由X、Y的溶解度曲线可判断,在     ℃时X、Y的溶解度相等。

(2)60℃时,X、Y、Z三种固体物质的溶解度由大到小的顺序是               

(3)60℃时,把20g固体X加到50g水中,充分搅拌,得到的溶液中溶质的质量分数为       ,若该溶液是不饱和溶液,不改变溶液的溶质质量分数,使该溶液变成饱和溶液的具体方法是      

答案:

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参考答案:C

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题型:阅读理解

At a certain time in our lives we consider every place as the possible sites(地点) for a house. I have thus searched the country within a dozen miles of where I live. In imagination I have bought all the farms, one after another, and I knew their prices.

The nearest thing that I came to actual ownership was when I bought the Hollowell place. But before the owner completed the sale with me, his wife changed her mind and wished to keep it, and he offered me additional dollars to return the farm to him. However, I let him keep the additional dollars and sold him the farm for just what I gave for it.

The real attractiong of the Hollowell farm to me were its position, being about two miles from the village, half a mile from the nearest neighbor, bounded(相邻) on one side by the river, and separated from the highway by a wide field. The poor condition fo the house and fences showed that it hadn’t been used for some time. I remembered from my earliest trip up the river that the house used to be hidden behind a forest area, and I was in a hurry to buy it before the owner finished getting out some rocks, cutting down the apples trees, and clearing away some young trees which had grown up in the fields. I wanted to buy it before he made any more of his improvements. But it turned out as I have said.

I was not really troubled by the loss. I had always had a garden, but I don’t thing I was ready for a large farm. I believe that as long as possible it is better to live free and uncommitted (无牵挂的). It makes but little difference whether you own a farm or not.

小题1:What do we know about the author?

A.He wanted to buy the oldest farm near where he lived.

B.He made a study of many farms before buying.

C.He made money by buying and selling farms.

D.He had the money to buy the best farm in the country.小题2:Why did the author decide to buy the Hollowell place?

A.It was of good market value.

B.It was next to the highway.

C.It was in a good position.

D.It was behind a nice garden.小题3:Why did the author want to buy the farm in a hurry?

A.He was afraid the owner might changes his mind.

B.He hoped to enlarge the forest on the farm.

C.He wanted to keep the farm as it was.

D.He was eager to become a farm owner.小题4:The underlined words “the loss” in the last paragraph refer to ___.

A.the money the author lost in buying the farm

B.the sale of the garden in the Hollowell place

C.the removal of the trees around the house

D.the failure to possess the Hollowell place小题5:What does the author believe as important in life?

A.To own a farm

B.To satisfy his needs

C.To be free from worries

D.To live in the countryside

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