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must They on looking park stay
Danger public not walk touch make
Ma Bing and his cousins are[[QOrDeR]]at some【小题2】signs【小题3】the Internet.【小题4】mean different things. We shouldn’t【小题5】on the grass. We should【小题6】【小题7】noise in the【小题8】. The sign near the river（河）means “【小题9】!”. We【小题10】【小题11】away from the river. The paint is wet （油漆未干）. We should not【小题12】it.
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
