A.指的是松鼠 B.指的是过冬的食物
(1)它们吃东西的时候,常常直着身子坐在树枝上,用前爪捧着往嘴里送。________
(2)秋天,松鼠就储藏过冬的食物,把它们塞到老树的缝隙里,塞得满满的。________
(3)冬天,它们有时候也用爪子扒开厚厚的积雪,寻找雪底下的食物。________
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