1. How did ancient Chinese people usually greet each other?
By using "zuoyi" gesture.
2. Why are the two pictures used in the passage when talking about “zuoyi”?
Because the rules are different for men and women.
3. What can you put in “▲”?
How to treat guests.
4. Which custom in the passage has the longest history?
"Zuoyi" gesture.
5. Which custom do you want to follow today? Why?
Zuoyi. Because it shows my respect quickly.
答案：1. By using "zuoyi" gesture. 2. Because the rules are different for men and women. 3. How to treat guests. 4. "Zuoyi" gesture. 5. Zuoyi. Because it shows my respect quickly.(言之有理即可)
