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Dear parents,
We have an interesting and important day this term. On September 9 th , we will have a School Open Day. 1． All parents can come to our school, have a cup of coffee, and meet our teachers and other parents. 2． talk with the principal （校长） , have a look at the clubs and ask any questions. 3． parents can go to the dining hall for lunch. 4． you can call John Smith—the principal, too. 5．
Welcome to our school and join us.
Apple Tree Middle School
| A．Parents can go to children’s classroom, |
| B．From 11:30 a.m. to 12:30 am, |
| C．If you have any questions about the School Open Day, |
| D．It begins at 9:00 a.m. and finishes at 4:00 p.m. |
| E．His telephone number is 021-48996785. |
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
