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Dear friends,
We are in Grade Six now. We are going to say goodbye to our primary school. We study and play together for six years. We help each other and we are all good friends. Thank you for your help. I will remember you all forever. We are friends forever. Please don't forget me!
Thank you!
Amy
1．They are in Grade _________now. （ ）
| A．4 | B．5 | C．6 |
| A．room | B．country | C．primary school |
| A．study | B．play | C．A and B |
| A．Yes, they are. | B．Yes, they do. | C．No, they aren't. |
| A．dear friends | B．Amy | C．us |
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
