“爷爷!爷爷!”强强情不自禁地大喊起来。悠扬的芦笛声将他的恐惧驱赶得一干二净。这时候,他觉得自己变得勇敢起来。强强想起了爷爷平时爱说的一句话:“海边的孩子,不沾点海水就长不结实。”
“沾点海水"是指________,“长不结实”是指________。爷爷这句话的意思是________________________________。
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