A.走了许久,远远地望见了一条迂回的明如玻璃的带子,河! |
B.见到我们,主人们立刻拨转马头,欢呼着、飞驰着,在汽车左右与前面引路。 |
C.太阳已经偏西,谁也不肯走。是呀!蒙汉情深何忍别,天涯碧草话斜阳! |
D.静寂的草原热闹起来:欢呼声、车声、马蹄声,响成一片。车跟着马飞过小丘,看见了几座蒙古包。 |
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