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Jack is a student. He likes traveling.
He goes to many places. Last weekend, he visited Beijing. On Saturday, he went to the Great Wall. He took many photos. The next day, he did some shopping with his friends in Beijing. He bought a pair of trousers. His friends bought many presents for him. Because it was his birthday that day. They had a big dinner. After that, they went to the cinema. They all had a good time.
1．Jack is going to Beijing.2．Jack likes traveling.
3．Jack bought a pair of shoes.
4．Jack didn’t take any photos.
5．Last Sunday, Jack did some shopping with his friends.
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
