(一) 听一段对话,回答第1〜3小题。
A. He bought some clothes. B. He bought some clothes and a book. C. He bought some toys and a book.
A. A book. B. A skirt. C. A dress.
A. A book about movies. B. A T-shirt. C. A book about the earth.
(二) 听一段对话,完成第4〜5小题。
A. A toy car B. A birthday cake C. A model of a spaceship
A. 2:30 B. 4:30 C. 3:30
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