A.watching | B.to watching | C.watch | D.watches |
A.or | B.but | C.and | D.so |
A.play | B.plays | C.to play | D.playing |
A.with | B.of | C.on | D.at |
A.buys | B.buies | C.buy | D.buying |
A.around | B.about | C.away | D.along |
A.of | B.about | C.with | D.and |
A.being | B.\ | C.becoming | D.be |
A.at | B.to | C.of | D.about |
A.does | B.doesn’t | C.don’t | D.do |

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

