Helen usually gets up very early in the morning. She often goes to school at about half past seven. She has her first lesson at eight five. She doesn’t go home at noon. She has lunch at a quarter to eleven at school. After lunch, she has a rest for half an hour. Then she plays games with her classmates. Classes are over at half past four. Helen goes home with her friends at about five. At six thirty, she has supper with her parents. She goes to bed at half past nine. That’s Helen’s day.
1.Helen usually gets up late in the morning. (2.The first lesson begins at about half past seven. (
3.Helen doesn’t have lunch at home. (
4.Helen goes home with her classmates at about four. (
5.Helen goes to bed at nine thirty. (
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