[答案] B

2. Listen for the specific ideas of 1b.

Get the students to listen and match the inventions with the years.

[答案] d；a；c；b

3. Check their work with the whole class.

Step 4　Pairwork (1c)

Student B, cover the dates. Student A, ask Student B when the things in the picture in 1b were invented. Then change roles and practice again.e.g.

A: When was the...invented?

B: I think it was invented in...

Step 5　Presentation

T: Look at the picture in 2a. There are some inventions on the table. What are they?

Ss: They are shoes with special heels, shoes with lights and hot icecream scoop.

T: They are small inventions and they can make our life more interesting and convenient. Two students are talking about them.

Step 6　Listening (2a－2b)

1. Get the students to listen and number the inventions [1－3] in the order they hear them in 2a.

2. Have the students listen again and complete the chart in 2b.

[答案] 1.3; 1; 2　2.changing; in the dark; serving

Step 7　Practice (2c)

Ask the students to make conversations in pairs using the information in 2b.e. g.

A: What are they used for?