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Hello! I’m Amy, I’m in a new class. The classroom is big. There are four windows, 30 desks and chairs. We have two blackboards. I have a new friend, too. She is tall and thin. She has big eyes and long black hair. She likes English and Chinese. Who is she? Guess!
Oh, right! She is Chen Jie.
1．Amy has a big classroom.2．There is one blackboard in the classroom.
3．Chen Jie is Amy’s friend.
4．Chen Jie is short and has long hair.
5．Chen Jie likes maths and Chinese.
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
