问题 填空题

水是生命之源,爱护水资源是每个公民应尽的责任.请回答下列有关问题:

(1)请举出你在生活中节约用水的一种做法:______.

(2)下列是一些净水的方法,其中可使硬水变成软水的是:______(填序号).

①过滤②蒸馏③沉淀④煮沸

(3)下列物质在水中能形成溶液的是______(填序号).

①面粉②蔗糖③植物油④冰块

(4)按如图所示装置进行实验,一段时间后,理论上A试管中产生的气体与B试管中产生的气体的体积比为______,该实验过程中发生反应的化学方程式为______.

答案

(1)生活中节约用水的措施有洗菜水浇花(或洗衣服水拖地、冲厕所或使用节水龙头等);故填:洗菜水浇花(或洗衣服水拖地、冲厕所或使用节水龙头等);

(2)使硬水变成软水的方法有蒸馏和煮沸,而过滤、沉淀只除掉水中难溶性杂质;故填:②④;

(3)面粉在水中形成的悬浊液,植物油在水中形成的乳浊液,而蔗糖溶于水形成溶液,冰和水是同一物质;故填:②;

(4)电解水生成氢气和氧气,正极产生氧气,负极产生氢气,二者的体积比为1:2,该实验过程中发生反应的化学方程式为2H2O

通电
.
2H2↑+O2↑.故填:1:2;2H2O
通电
.
2H2↑+O2↑.

完形填空

第二节: 完形填空(共20小题, 每小题1.5分,满分30分)

请认真阅读下面短文,从短文后各题所给的A、B、C、D四个选项中,选出最佳选项,并在答题卡上将该项涂黑。

One day a king and his minister(大臣)went out for a walk. The king said to the minister, “I want to give reward to anyone who is hospitable(好客的) to us during our   21   .”

The king and the minister went up to one man and said, “We are   22    . This is a fine town. Could we stay at your house as   23    ?”

The man looked down upon them, saying, “  24  do I know you’re not criminals?”

Then the king and the minister went up and   25   on somebody else’s door. When the man opened the   26   , they asked, “Could we spend the night here? It’s getting dark.”

The man said, “First, tell me   27  of you there are. Then I’ll decide.”

The king said, “You see that we are only two. If you   28   us to stay with you, we’ll pay you what we have tomorrow.” The man agreed.

Then they   29   walking. They came to another house and knocked on the door. The king said, “It’s getting dark.   30  we spend the night at your house?”

The man said, “   31   ! Just tell me how many of you there are.”

The king said, “You can see we are only two.” Then they   32   back to the palace.

The minister had  33    the address of each person to whom they had spoken, and the following  34  the king called all the three persons to the palace. To the first one the king said, “When travelers come from a different kingdom, we must  35  them shelter(住所). It is   36    we aren’t thieves.” And the king   37  the man out of his kingdom.

To the   38 man the king gave a lot of money. To the third one, who  39    offered shelter and only then asked how many were in their party, the king gave his  40  .

21.   A sleep            B talk      C dinner        D walk

22.   A friends B criminals     C ministers     D travelers

23.   A owners B officials      C officers       D guests

24.   A How    B Why    C When   D Where

25.   A dropped      B took     C knocked      D touched

26.   A letter    B box      C door    D window

27.   A how many   B how much C how long    D how far

28.   A .agree       B allow   C make   D want

29.   A began   B enjoyed       C stopped       D continued

30.   A Would           B Must    C Could  D Should

31.   A Pardon B Thanks       C Sorry   D Certainly

32.   A went  B hurried       C returned     D drove

33.   A taken away  B taken down        C taken off    D taken up

34.   A year     B month  C minute D day

35.   A borrow B offer   C lend    D share

36.   A silly     B right  C clean   D clear

37.   A threw   B invited       C kept    D brought

38.   A last     B first     C third    D second

39.   A bravely       B slowly           C immediately       D carefully

40.   A order   B promise      C name   D crown

单项选择题 A1型题