Question

听力

第一节(共5小题；每小题1.5分，满分7.5分)

听下面5段对话，选出最佳选项。

1．How many courses did the woman take in primary school?

A．Two．

B．Three．

C．Four．

2．Where does the conversation take place?

A．In a bookstore．

B．In a hospital．

C．In a clothes store．

3．What does the man mean?

A．Aluminum is widely used in industries．

B．Aluminum is hardly used in industries．

C．Aluminum is seldom used in industries．

4．What does the woman mean?

A．They don't have to go to the concert．

B．They will have to rent a car as early as possible．

C．The subway is fine with her．

5．What does the woman mean?

A．She can't make it because she broke her chest．

B．She can't make it because she's already eaten out．

C．She can't make it because she's short of money．

第二节(共15小题；每小题1.5分，满分22.5分)

听下面5段对话或独白，选出最佳选项。

听第6段材料，回答第6至8题。

6．What did the man think of the experiment?

A．Interesting．

B．Boring．

C．Different．

7．What materials did the man need to do the experiment?

A．Table and water．

B．Table and salt．

C．Table salt and water．

8．How much did the water's boiling temperature rise when the man put a teaspoon of salt into a half gallon of water?

A．1.1℃．

B．1.2℃．

C．2.1℃．

听第7段材料，回答第9至11题。

9．What's the relationship between the two speakers?

A．Teacher and student．

B．Manager and worker．

C．Doctor and patient．

10．Why didn't the woman feel electricity in the water when she put a coin in salt water?

A．There is no electricity in the salt water．

B．The amount of electricity is too little．

C．The electricity did not travel through the water．

11．What are they talking about?

A．An experiment．

B．A story．

C．Salt water．

听第8段材料，回答第12至13题。

12．Which of the following is NOT a physical change?

A．Oxygen is produced．

B．The substance moves around．

C．The substance becomes larger．

13．Which of the following is a chemical change?

A．The temperature of the substance rises．

B．The substance becomes colder．

C．A new substance is produced．

听第9段材料，回答第14至16题。

14．What's the purpose of the experiment?

A．To see if plants need water．

B．To see whether roots of a plant always grow downward．

C．To see how much water plants need．

15．What method did the woman use to do the experiment?

A．Invention．

B．Production．

C．Observation．

16．What's the conclusion of the experiment?

A．Plants do know which way is up and which way is down．

B．Plants need a lot of water to grow up．

C．Plants need sunlight to grow up．

听第10段材料，回答第17至20题。

17．What happened thousands of years ago?

A．There was no salt in the world．

B．Salt was as expensive as gold．

C．There was too much salt．

18．What will happen if you put some salt by the door of your house?

A．Ants will walk across the salt．

B．Ants will circle the salt．

C．Ants won't enter your house．

19．What will happen if you use some salt when you cook apples?

A．The apples will be delicious．

B．The apples will be softer．

C．The apples will stay fresh．

20．What's the passage mainly about?

A．How to produce salt．

B．The history of producing salt．

C．Uses of salt．

Answer 1

答案：B;C;A;C;C;A;C;A;A;B;A;A;C;B;C;A;B;C;A;C
解析：

听力材料 　　Text 1 　　M：How many courses did you have in primary school? 　　W：Besides Chinese, we also had English and maths． 　　Text 2 　　M：What can I do for you? 　　W：I want a T-shirt． 　　Text 3 　　W：Is aluminum widely used in industries? 　　M：Of 124 kinds of industries, the aluminum industries are 113 kinds alone． 　　Text 4 　　M：I'd like to drive to the concert, but my brother will use the car tonight． 　　W：We can take the subway if we go a little earlier． 　　Text 5 　　M：Let's eat out, shall we? 　　W：I'm afraid not．I've gone through my paycheck for the week already． 　　Text 6 　　M：We did an interesting experiment in our school lab this morning． 　　W：What is it? 　　M：Anything that is dissolved in a liquid will raise the boiling temperature and lower the freezing temperature of that liquid． 　　W：How did you do the experiment? 　　M：We added table salt to water to see whether the water's boiling temperature would rise． 　　W：Did the water's boiling temperature rise? How much? 　　M：Yes．Adding table salt to water will change its boiling temperature from 100℃ to some higher number depending on how much salt is added．The more salt, the higher the number．For a teaspoon of salt dissolved in a half gallon of water, the boiling temperature would rise slightly to 101.1℃． 　　W：It's really interesting． 　　Text 7 　　W：Does salt water make metal rust faster than unsalted water? 　　M：Salt water does make nail rust faster than unsalted water． 　　W：Could you please explain the reason in a chemical way? 　　M：Well, it is because the salt allows electricity to travel through the salt water more easily． 　　W：Where does the electricity come from? 　　M：When you put two different types of metal in water, especially salt water, a chemical reaction that actually produces electricity takes place． 　　W：Once I put a coin into salt water．Why didn't I feel electricity in the water? 　　M：Because the amount of electricity is so small that you don't even notice． 　　Text 8 　　W：Excuse me, Mr．Smith, I want to ask you some questions． 　　M：Go ahead, please! 　　W：Would you tell me the difference between a physical change and a chemical change? 　　M：Well, there is a big difference! If you change something physically, you still have what you started with．For example, if you tear a piece of paper you still have paper． 　　W：How about a chemical change? 　　M：If you change something chemically, you end up with something different from what you started with．For example, if you burn a piece of paper you end up with ash and no more paper． 　　W：I see．Thanks very much． 　　M：You're welcome． 　　Text 9 　　W：Weeks ago we did an interesting experiment． 　　M：Why did you do the experiment? 　　W：To find out whether roots of a plant always grow downward． 　　M：How did you do the experiment? 　　W：We put beans in a bottle and filled the bottle with cotton balls and added enough water．When shoots began to come up, we turned the bottle upside down and left it there for at least a day or two．We observed whether roots of a plant always grew downward． 　　M：What's the conclusion? 　　W：Plants do know which way is up and which way is down．Plants also know that water is found down in the ground and sunlight is found up in the sky． 　　M：The experiment is really interesting． 　　Text 10 　　Thousands of years ago salt was very valuable．By the 12th century it was as expensive as gold．Salt has been used for many things through the years and in many ways． 　　Fresh eggs：Want to know if your eggs are fresh? Put an egg in a cup of salted water．If it sinks, it is bad; if it floats, it's fresh． 　　Ants：Put salt at doorways, windows and anywhere else when ants manage to get into your house．Ants won't walk across salt and they will stay outside． 　　Cooking apples：You can improve the taste of cooking apples by adding a little salt． 　　Stop discoloring food：Apples and potatoes won't discolor after peeling if you cover them in salted water． 　　Frost：If you hang your clothes outside during winter, you will like this one．Use salt in the water to keep your clothes from freezing on the line．You can also use salt water on your clothes line to keep it from freezing too． 　　Boil water：Water will boil quicker if salted． 　　Fresh flowers：A pinch of salt added to the water of fresh flowers will make them last longer．