Jimmy is a student. He likes stars very much. One night, he had a dream. He was in a spaceship. Soon, he was on the moon. There was no air and there was no water. But there were many stars around him. He was very excited. He walked, jumped and counted the stars. Suddenly, he fell over. It was only a dream. Jimmy was a bit sad.
( )1. Jimmy likes stars very much.
( )2. One night he dreamed he was in a spaceship.
( )3. There was no air, no water on the earth.
( )4.There were many stars around him on the moon.
( )5.He walked, jumped and counted the stars.
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