搜索
Bill and Kate are school students. They are Young Pioneers. They are in Grade Three. There are six classes in Grade Six. In Kate’s class there are forty-two students. Twenty-five students are girls. There are forty-five students in Bill’s class. Twenty students are boys. And there are thirty-four Young Pioneers in Bill’s class. In kate’s class there are thirty.
1．Bill and Kate are brothers.2．They are Young Pioneers.
3．They aren’t in Grade Three.
4．There are forty-two students in Kate’s class.
5．There are six boys in Grade six.
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
