三~六年级学生参加环保小组人数统计图
1.四年级参加环保小组的男生与女生相差( )人.
A.10 B.15 C.30
2.六年级共有( )人参加环保小组.
A.55 B.70 C.75
3.五年级参加环保小组的总人数比六年级参加环保小组的总人数多( )人.
A.5 B.80 C.70
4.( )年级参加环保小组的人数最少.
A.六 B.五 C.三
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