A.Today | B.Yesterday | C.Tomorrow |
A.shopping | B.camping | C.hiking |
A.buy | B.buys | C.to buy |
A.library | B.store | C.museum |
A.finds | B.finding | C.found |
A.How many | B.How much | C.How about |
A.expensive | B.pretty | C.cheap |
A.Which | B.What size | C.What about |
A.$150 | B.$105 | C.$60 |
A.take | B.put on | C.bought |
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