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How are you? I'm going to see you in two weeks. Last Monday, I went to Beijing with my parents. I climbed the Great Wall. I had hamburgers and chips for lunch. I liked them. Then we went to a zoo. There are many animals. I saw monkeys and pandas. The pandas were very cute. I gave food to them. We took photos with them. We came back on Wednesday. I had a good time. I will take some photos for you. See you soon!
Lucy
1．This is a letter from Mary.
2．Lucy didn't go to Beijing with her parents.
3．Lucy climbed the Great Wall.
4．There aren't many animals in the zoo.
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
