Yesterday, Ross was bored. He wanted to do something fun with his friend. So he called his friend. “I’m bored. Let’s do something fun!” he said. His friend said, “That sounds great. I’m glad you call me. I’m bored, too. What do you want to do?” Ross said he wanted to go to the beach. His friend said that sounded great. Ross picked up his friend in his car. They went to the beach. They threw a Frisbee to each other. They swam in the sea. They built a big sandcastle. They watched the sailboats. They watched the seagulls. Ross drove his friend home. “That was fun! Let’s do it again sometime,” his friend said.
1.Ross was bored yesterday. (2.A friend called Ross. (
3.Ross wanted to go to the park. (
4.Ross picked up his friend on his bike. (
5.Ross and his friend went to the beach. (

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

