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I’m Kitty. It was a fine day today. Alice and I went to the Science Museum. It is far away from our homes. So we went there by underground together. We arrived at the museum at 9:15 a.m. In the museum, we saw a lot of interesting things. We touched a wall. And it became a window. The robots there were amazing, too. We met some classmates and friends there. We learnt a lot about science. We left the museum at four o’clock in the afternoon. We enjoyed ourselves there.
1．What museum did Alice and Kitty visit?2．What did the wall become when they touched it?
3．Who did they meet in 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
