I’m a baby. I’m only one year old. I can’t walk. My mother helps me. I
can’t jump. My mother helps me. I can’t eat. My mother helps me, too. What
can I do ? I can laugh. I can sit. Can I speak ? Yes, but only a little. I can only
say “ Mum” “water” or “hug”. However, my mother can understand me well.
( ) 1. I’m old enough.
( ) 2. I can walk well.
( ) 3. I can’t speak at all.
( ) 4. My mother helps me eat, walk and jump.
( ) 5. My mother can understand my words.
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