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I'm Mary. My family are going to have a party in our house today. Dad is writing now. He is going to the shop. Mom is going to cook for us. My sister, Alice can play the music at the party. How about my brother, Colin? He is going to the shop with my father. He wants to buy some flowers and candles. Then he can make a cake for us. He is helpful. We are happy.
1．Mary's family are going to have a party in their house today.2．Mary's dad is cooking in the kitchen now.
3．Alice can't play the music.
4．Colin is going to buy some flowers and candles in the shop.
5．Colin is a helpful boy.
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
