Daydream
It’s a very nice day in May. The students are having a maths class. But Bob is looking out of the window and watching the clouds move across the blue sky. “Boy, what a day to play football.” he thinks. Just then the bell rings and wakes him up from his daydream. He closes his notebook sadly, stands up, and walks slowly to his next class.
1.Which season is it now? ( )A.Spring. | B.Summer. | C.Autumn. |
A.It’s windy. | B.It’s rainy. | C.It’s nice. |
A.He is watching TV. | B.He is playing football. | C.He is having classes. |
A.The football. | B.The bell. | C.The clock. |
A.Ping pong. | B.Tennis. | C.Football. |
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同类型试题
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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
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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
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