A: Hi, Zhou Hui! What fashionable sportswear you are wearing today!
B: Thanks, Jack. It’s Li Ning, a famous Chinese national sports brand. I like
A: Really? What’s it made of?
B: The label(标签)on it
A: I know Xinjiang cotton, as so many famous brands use it to make their products. Can you tell me more about it?
B: Well, according to historical records, the first cotton introduced from India to Xinjiang through Silk Road could
A: Wow, what a long history it has!
B: Also, the pure(纯)white color and strong tensile(伸缩)strength of the cotton make it popular among customers. What’s more, it is
A: Great! No wonder that Xinjiang cotton is of high quality, and
B: Of course. Actually, besides Li Ning, some other Chinese brands have surprised the world. Time magazine recently released(发布)a
A: There is no doubt that many Chinese brands are going worldwide and becoming well-known.
B: Yes, we all feel excited and

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

