1.同学们坐在宽敞明亮的教室里,(_______)地听老师讲课。(集中精神,集中注意力)
2.“我去!”“我去!”同学们(_______)地喊着。(争着向前,唯恐落后)
3.这(_______)难道真的要永远被埋没吗?(无法估价的东西,指十分珍贵的东西)
4.男孩(_______)地对医生说:“请您把我的血抽一半给妹妹吧,我们俩各活五十年!”(对待事情非常严肃认真)
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