搜索
It’s a fine day today. Some boys and girls are playing in the zoo. There are eight boys in front of a big tree. They are playing football. Where are the girls? Look! they are feeding (喂养) the monkeys, the birds, the pandas and the deer. Lucy and Lily are drawing. What about me? I’m reading a book under the big tree.
1．There are some boys and girls playing in the park.2．There are two girls drawing pictures.
3．The eight boys are playing football in front of the big tree.
4．There are five kinds of animals in the zoo.
5．I’m reading in front of the big tree.
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
