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Ann: Welcome to our school. This is my classroom.
Bill:
Ann:
Bill: Where is the library?
Ann:
Bill: Is that the art room?
Ann:
Bill:great! I like computer class.
Ann:Me too.
Bill:It’s 8 o’clock. It’s time for class.
Ann:Oh, hurry up! Let’s go!
| A．It’s on the second floor. |
| B．No, it isn’t. |
| C．Wow, it’s so big! |
| D．What time is it now, Bill? |
| E．Forty-one students. |
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
