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| A. Look at all the boats, Mom! B. Look at all the cars! C. Tara and Mom got off the train. D. A man helped them with their suitcases. E. The train passed many farms. | ||
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| Tara and Mom were going to take a trip. They were going to see Aunt Carol. “I can’t wait to see Aunt Carol!” said Tara. | Tara and Mom walked to the train station. Tara and Mom found their train. “Here is our train,” said Mom. | “We’re moving!” said Tara. The train left the station. Tara looked out the window. The train went down a hill. Tara saw many buildings, cars, and people. “ |
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| The train went over a bridge. The bridge went over a river. Tara saw lots of boats. “ | Soon the train stopped at station. | |
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
