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A. A big sports center. We have patient trainers. We can offer you fantastic swimming and skating classes. Our center is clean and peaceful. B. Welcome to our singing class! Our famous singing teacher, Mrs. Black, is good at all kinds of music. She is nice and friendly to her students. C. You can have classes in Mr. Brown’s big laboratory. You can not only enjoy the wonderful experiments(实验), but also learn how things work. D. If you want to learn teaching, our class is a good choice. We have many experienced teachers in teaching. Your teaching level will be improved soon. E. This is a ping-pong class. We have two ping-pong courts(球场). We have different groups for people of different ages. Our coaches are very skillful. Join us! F. Everyone likes to eat delicious food, but can you cook? Come to our class! There are great cooks who will teach you how to cook Chinese food and Western food. |
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
