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．