Bob
A.was | B.is | C.be | D.were |
A.go | B.went | C.going | D.goes |
A.in | B.to | C.for | D.at |
A.came | B.come | C.comes | D.coming |
A.liking | B.like | C.to like | D.liked |
A.visited | B.visit | C.visiting | D.to visit |
A.had | B.have | C.having | D.to have |
A.to sing | B.sang | C.sing | D.singing |
A.danced | B.to dance | C.dance | D.dancing |
A.is | B.be | C.was | D.were |
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