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Mike is an English boy. He is ten. His sister’s name is Mary. She is five. She is not a student. Mike has a new schoolbag. It’s big, but it is not heavy. There are some books in it. They are a Chinese book, an English book, a math book and two storybooks. There is a black and red pen in his pencil box. He likes it.
1．Mike is a Chinese boy.2．Mike has two notebooks.
3．Mike’s schoolbag is heavy.
4．The pen is black and red.
5．Mary is a student.
6．Mike has five books in his new schoobag.
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
