你将听到五组对话,根据对话内容填入所缺的单词, 使对话意思合理、完整,每空只填一词,注意大小写的规范要求,数字可以用阿拉伯数字表示。每组对话将读两遍。
(1)Teacher: How many traffic _______ are there in every country?
Student: There are always three: red, yellow and .
(2)Amy: How do you a tree ?
Chen: First, dig the .
(3)My father is an .
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