2a  Listen and number the inventions ［1-3］ in the order you hear them.
Alex: Hi, Carol. Wow, what are those?
Carol: Hello, Alex. Oh, these are some of theinteresting inventions that I’m writingabout for my English homework.
Alex: I see…What’s that, then?
Carol: They’re shoes with lights. People use them for seeing in the dark when you get up at night.
Alex: Oh, that’s a cool idea! I always hit my toe on something on the way to the bathroom at night.
Carol: Next is a special ice-cream scoop. This is my favorite invention. It runs on electricity and becomes hot.
Alex: I know what it’s for! It’s used for serving really cold ice-cream.
Carol: Yes, that’s right! The last invention I’m going to write about is shoes with special heels. You can move the heels up and down.
Alex: What are they used for?
Carol: Well, you can change the style of your shoes. You can raise the heels if you are going to a party or lower them if you are just going out for shopping.
2b  Listen again and complete the chart below.
Alex: Hi, Carol. Wow, what are those?
Carol: Hello, Alex. Oh, these are some of the interesting inventions that I’m writing about for my English homework.
Alex: I see…What’s that, then?
Carol: They’re shoes with lights. People use them for seeing in the dark when you get up at night.
Alex: Oh, that’s a cool idea! I always hit my toe on something on the way to the bathroom at night.
Carol: Next is a special ice-cream scoop. This is my favorite invention. It runs on electricity and becomes hot.
Alex: I know what it’s for! It’s used for serving really cold ice-cream.
Carol: Yes, that’s right! The last invention I’m going to write about is shoes with special heels. You can move the heels up and down.
Alex: What are they used for?
Carol: Well, you can change the style of yourshoes. You can raise the heels if you are going to a party or lower them if youare just going out for shopping.