(Xiaoming is studying abroad. He’s having a video call on Wechat with his cousin Zixuan.)

A: Hey, Xiaoming! It’s been two months since you moved! I miss you so much! How is it going?
B: Great! How about you, Zixuan?
A: Good! Your dad told me your school sports meeting just finished yesterday. What was it like to attend a sports meeting in
B: Well, it was fantastic, Zixuan! French students don’t have a sports meeting like ours in China. It was actually just a dodgeball game.
A: A dodgeball? I’ve never heard of it. Can you give a short
B: Sure. Both teams try their best to hit each other with dodgeballs. The members that get hit must leave the game. The team with the most players left on the court
B: For a first-time player, you had already done a good job. I’m so
A: Thanks! Surprisingly, during the last 10 minutes, our teammates successfully knocked out a number of the players in the other team, leaving them behind with
B: Did you continue to hit them as hard as possible?
A: Well, to win, we don’t need to
B: Wow, congratulations! How I wish to see this exciting game with my own eyes.
A: That’s no problem. Our classmates
B: Thanks! I can’t wait!

同类型试题

y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2


y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2

