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| A. No, I didn’t. B. I lost my football. C. Last Sunday. D. My family visited it. E. On foot. F. Because I wanted to play with you. G. Yes, he was. H. No, it was cloudy. |
1．Why did you call me?
2．Did you water flowers this morning?
3．How did you get to the park?
4．Was it rainy yesterday?
5．What’s the matter?
6．Was your father at home yesterday?
7．Who visited Tian’anmen Square?
8．When did you go to the museum?
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
