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Hello, I’m Robin. I am short but strong. I am clever. I am good at maths. I can speak Chinese and English. I go to school from Monday to Friday. I have maths every day. Mr Yang is my maths teacher. He is strict. He is helpful with me. I’m hard-working. My favourite food is salad. It’s healthy. Today is my birthday. I eat much. I’m very happy.
1．Robin is a clever boy.2．He is short and strong.
3．Mr Yang is hardworking.
4．Robin likes maths.
5．The salad is healthy.
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
