Yesterday, Li Ming
A.wasn’t | B.did | C.didn’t |
A.at | B.in | C.from |
A.watch | B.watched | C.watches |
A.in | B.for | C.on |
A.was | B.is | C.were |
A.How | B.But | C.And |
A.some | B.﹨ | C.no |
A.air | B.water | C.tree |
A.want | B.wanted | C.wants |
A.decided | B.decide | C.deciding |
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