余尝谓读书有三到,谓心到,眼到,口到。心不在此,则眼不看仔细,心眼既不专一,① ,② ,③ 。三到之中,心到最急。心既到矣,眼口岂不到乎?
1.把古文补充完整,并写出下列词语意思。尝: 急:
2.用陈述的语气说说画横线句子的意思
3.读书启智,读书明理。古往今来,人们都很注意读书的方法和态度,朱熹告诉我们读书的六字要诀是“

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

