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Jeff is eight. He goes to school every day. The school is next to his home. So he goes there on foot and comes back home on time. But today he is late. His mother asks him，“Why are you late today？”
“I am in the headmaster's (校长的) office(办公室)．”
“Why do you go to the headmaster's office？”
“Because(因为) my teacher asks us a question in class，and nobody(没有人) can answer it，but I can.”
“It's good to answer the teacher's questions. What is the question？”
“The question is—who puts ink(墨水) on my chair？”
( )（1）Jeff's home is not far from his school.
( )（2）Jeff goes to school by bike.
( )（3）Jeff puts ink on the teacher's chair.
( )（4）Jeff is six.
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
