Tom and Fred are students. The are twelve years old, and they are in the same class. One afternoon they have a fight in class. The teacher is very angry. He says, “Why are you crying, Fred?”
After school, all the other boys go home, but Tom and Fred stay in the classroom with their teacher. They begin writing their names. The teacher looks at him and says, “Why are you crying, Fred?”
“Because his name is Tommy, and my name is very long. My name is Frederick Hollingsworth.” Fred says.
1.Tom and Fred are classmates.2.Last Friday Fred and Tom have a fight in class, and their teacher is very happy.
3.All the other boys go home after school.
4.Tom and Fred do not go home. They stay in the classroom and write their teacher’s name.
5.Fred is crying, because he can’t write his name.

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

