搜索
Hello! My name is Lucy. Look at my classmates(同班同学). They are very happy now. Because they are doing their favourite schoolwork(学校作业). Xiao Ming is writing his story. Li Fang is drawing a picture. Fang Hua is reading a book now. Lily is listening to music. I'm looking out of the classroom. The sky is blue. There are many clouds in the sky. How beautiful!
A.
B. 
C. 
D. 
E. 
1．Xiao Ming is
2．Li Fang is
3．Fang Hua is
4．Lily is
5．Lucy is
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
