(1)我想,灰椋鸟尖尖的嘴,灰灰的背,远远望去黑乎乎的,有什么好看的呢?
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(2)没有林场工人的辛勤劳动,没有这几年大规模植树造林,我到哪儿去观赏这鸟儿归林的壮观场面呢?
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(3)这上万只灰椋鸟是在举行盛大的联欢会,还是在庆祝自己的节日?要不怎么会这样热闹?
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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

