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It’s a hot summer day in Beijing. The time now is 7:00 p.m. Wang Jun is wearing a T-shirt. He is drawing pictures in the study. In London, the weather is cool and rainy. It’s 12 degrees. The time is twelve o’clock at noon. Lunch is ready. Emma is having lunch in the kitchen. It’s 5 degrees in Sydney. It’s cold and cloudy. The time is 9:00 p.m. Bella is sleeping in the bedroom. In New York, it is 7:00 a.m. It’s sunny. Albert is washing his face in the bathroom. “Hurry up. Time for school!” his mother says.
City | Weather | Time | Activity | |
Wang Jun | Beijing | 7:00 p.m. | drawing pictures | |
London | cool and rainy | 12:00 at noon | ||
Bella | Sydney | cold and cloudy | sleeping | |
Albert | sunny | 7:00 a.m. | washing |
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
