My friend David is from America, but now he lives in Beijing. Beijing is a beautiful city. His father works in a university. He is clever. He is a scientist. He goes to work by subway. His mother is a pilot. She works on a rescue (救援) plane. She is very friendly. And she goes to work by bus.
David and his brother Devin are twins. They look the same, but they are totally different. Every morning, David goes to school by bike. But Devin goes to school by bus. In the evening. David does his homework. His brother Devin often watches cartoons on TV. David usually plays football on Saturdays because he likes playing sports. But Devin likes playing computer games. He often plays computer games with his friends.
1.David is from the USA and now he lives in Beijing, China.2.David’s father is a teacher.
3.David’s mother works in a university.
4.David goes to school by bus.
5.Devin often watches cartoons in the evening.
6.David and his brother Devin have different hobbies.
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