—It’s_______!
A. snowy B. rainy
—_______.
A. It’s a big elephant B. It’s a big bear
—It’s black.
A. What colour is the ant B. What colour is the cat
—________!
A. Yes B. Great
—_______
A. Yes, please. B. No, thanks
—Great!
A. let’s go B . let’s play
—_______
A. Thank you. B. Thanks.
—Thank you very much.
A. A picture for you B. A candy for you
—______.
A. I can sing B. I can jump
—_____!
A. The same to you B. Thank you
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