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A: Welcome to our school.
B: Thank you.
A: Look, this is our classroom.
B: How nice! How many boys and girls in your class?
A: Nineteen boys and eighteen girls.
B: Oh, I see. Look, what’s behind the door?
A: Let me see. It’s a football. Do you like it?
B: Yes. I can play football very well.
A: Me, too. Let’s go and play football.
B: Great!
1．They are in the school. （_______）
2．There are(有) eighteen girls in the class. （_______）
3．There are seventeen boys in the class. （_______）
4．The basketball is behind the door. （_______）
5．They can play football very well. （_______）
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
