A. B. C.
D. E.
1.To be healthy, we should keep clean: wash our hands before eating and brush our teeth twice a day.2.We went to Xidan Bookshop first. My brother bought two English books and one English-Chinese dictionary.
3.It is an insect. It is small. It’s black and yellow. It likes flowers, and it can make honey. What animal is it?
4.It is Mid-Autumn Festival. People get together with their families to have a big dinner. They eat mooncakes. They enjoy looking at the beautiful round moon.
5.I want to go to Sichuan. It’s in the southwest of China. I can see the pandas in Wolong. They are very cute.
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