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| Dear Dad, Harbin is so cold now. It’s snowing. But I can enjoy skiing here. And I’m wearing warm clothes. I’m having a great time here. Yours, Mary |
| Dear Jim, Kunming is a great place. It’s very warm. I am wearing a T-shirt. It’s a little windy today. There are a lot of people in the park. Some children are flying kites near me. I’ll join them after writing the letter. Please write to me soon. Yours, Lily |
| Dear Tim, We’re having a good time at the camp(野营) in Singapore(新加坡). People here are very kind and I have many friends now. The weather is very hot. We go swimming every day. I can swim well. My new friend Zhang Qiang is good at swimming, too. Yours, Li Wei |
1．It’s spring in Harbin now.
2．Lily writes the letter in a park.
3．Li Wei likes swimming.
4．People in Harbin may wear warm clothes now.
5．Lily will draw pictures after she writes the letter.
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
