
Dear Mary,
I’ve already gotten your e-mail. I’m very glad that you are interested in the cultural relics (文物) of China. Let me tell you something about it.
If you want to learn about the cultural relics of our country, you may consider visiting museums or
National Treasure is a popular show
The show tells the stories and history behind the treasures. It also invites famous actors to act out
A lot of people love the show and they are the fans of National Treasure. One of the fans said,
“National Treasure really brings museums and cultural relics
So much for National Treasure. Let’s talk about it face to face next time. I’m looking forward to seeing you soon.
Yours,
He Ting

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

