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I’m Li Shan. Today is Saturday. The sky is blue. My mother is going to work. She works in a bookstore. My father doesn’t work today. He is going to write. He often writes in the study. My sister is going to do some washing. She is helpful at home. I’m going to buy some flowers in the shop. Then I’m going to a party.
1．The sky is blue today.2．Li Shan’s mom is going to the bookstore.
3．Li Shan’s dad is going to sleep.
4．Li Shan’s sister is helpful at home.
5．Li Shan is going to buy some gifts.
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
