give, safe, must, of, off, soft, button, need
(1)People ________ smoke in public(公众的)places.
(2)Can you tell me about fire ________?
(3)Kitty’s dress is too small. She ________ a new one.
(4)The students ________ a report about the Yangtze River.
(5)The flowers are dancing in the wind ________.
(6)I like this jacket because it has ________.
(7)Take the underground and get ________ at Sea Street Station.
(8)Our Huangpu River is part ________ the Yangtze River.
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