听下面三段对话或独白。每段对话或独白后有1至2个小题。从题中所给的A、B、C三个选项中选出最佳答案,并将其标号写在题前的括号内。
听下面一段对话,回答第1小题。
A. March B. June C. September
听下面一段独白,完成第2、3小题。
A. Chen Jie's B. hers C. Mike's
A. a science book B. a storybook C. a Chinese book
听下面一段对话,完成第4、5小题。
A. October 1st B. September 10th C. November 11th
A. eat mooncakes B. send flowers C. make a card
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