听力材料:
(1)guì duān dòu mēn yuán miàn qián jīng yāo qiú
(2)潮湿 搬家 凉席 竹椅 摇篮 酷暑 性格 善良 清泉 踪迹
(3)声音、放学、身体、运动、欢乐
(1)听音节,写数字。
qiú | miàn | guì | jīng | dòu | qián | duān | mēn | yāo | yuán |
凉席 | 潮湿 | 摇篮 | 清泉 | 善良 | 竹椅 | 酷暑 | 踪迹 | 搬家 | 性格 |
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