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Sarah: My bag is heavy.
Mike: What’s in it?
Sarah: Look! Twenty-four story-books, thirty-five pencils, forty-eight rulers, fifty erasers, twelve pencil-cases.
Mike: Wow! My dear!
Sarah: What’s in your bag?
Mike: Look! Four story-books, two pencils, one ruler, one eraser and one pencil-case.
Sarah: Oh, your bag is very light.
（1）Is Mike’s bag heavy?
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（2）How many pencils does Sarah have?
____________________________________
（3）How many rulers does Sarah have?
____________________________________
（4）How many story-books does Mike have?
____________________________________
（5）How many rulers does Mike have?
____________________________________
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
