人们的意识得到了明显改善。在过去的十年里,保护区域正变得越来越大,这使得动物的数量增加了。此外,由于政府的干预,采取了有效的措施来保护生态,保持生物平衡。显然,所有的努力都是有益的。更多保护动物免受死亡的法律生效,导致人类和动物之间的和谐共存。然而,为了保护濒危动物和减少野生动物感染病毒的传播,我们需要阻止人类入侵它们的栖息地和建立更多的自然保护区。
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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