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1. It's cold in winter. (对划线部分提问)
________ is the ________ in winter?
2. The ducks look into the water. (改为一般疑问句)
________the ducks ________ into the water?
3. Joe’s father swims in the river. (改为否定句)
Joe’s father ________ in the river.
4. Are they ugly? Are they beautiful? (改成选择疑问句)
________ they ugly ________ beautiful?
5. Can the swans fly in the sky? (根据实际情况回答)
________, they ________.
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
