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Hello, everyone. I am Sam. I am a student in No.1 Primary School. I always get up at 7:00 a.m. I have breakfast at 7:30 a.m. at home. My mother cooks breakfast for me. After breakfast, I go to school by bus. I have lunch at 11:40 a.m. at school. After school, I help my mom cook dinner. I also help my mom wash the dishes after dinner.
| lunch, school, breakfast, wash, student |
1．Sam is a
2．Sam’s mother cooks
3．Sam has
4．After dinner, he helps his mom
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
