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Mr Bi is Chinese. He is a teacher. Now he works in a small village. He teaches in a primary school. And his students are between 7 and 12 years old. Mr Bi can also speak English. He has two children. His son, Tongtong, is 10 years old and her daughter, Yanyan, is 8 years old. Mr Bi likes playing the Erhu and playing basketball. Sometimes he plays volleyball with his students. But on Friday afternoon, he often cleans their school. Mr Bi is a kind teacher and father.
| A. Chinese and English. B. A son and a daughter. C. Playing basketball and playing the Erhu. D. Primary school students aged(年龄) 7 to 12. E. A kind teacher and father. |
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
