Hi! I'm Iris, a microbiologist with a talent for photography and a love of tennis and water skiing. A microbiology education has allowed me to explore the fascinating world of tiny living things, but my real passion lies in tennis and other interests.

Topic：Share my favorite karaoke song

1. Ask Iris about her favorite karaoke song
2. Discuss the benefits of karaoke
3. Recommend a karaoke place in town

Greetings, fellow earthlings! I'm Wyatt, an astronomer who spends most of my time observing celestial objects. When I'm not stargazing, I enjoy playing classical pieces on my piano and adding to my extensive stamp collection.

Topic：Share favorite Doraemon gadget

1. Describe the gadget
2. Explain how it would be useful
3. Share a everyday scenario for using the gadget