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To: Shelley @ penpal.com.cn
Dear Shelley,
How are you? It's winter now in America. lt’s very cold. Sometimes it snows and everything is white. We like snow, because we can play with snow and make snowmen. Does it often snow in your hometown?
Christmas is coming soon. We are very busy. My father and mother buy a lot of presents for our family. We decorate Christmas trees in our house. We put lights and stars in the tree.
I want to give you a present, too. What do you like? Tell me.
Best regards!
Judy
1．It often snows in winter. And Judy likes snow.2．Judy can’t play with snow or make a snowman.
3．Christmas is coming.
4．Judy’s family use lights and stars to decorate the Christmas trees.
5．Shelley wants to give Judy a present.
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
