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（I） （II）
（______）1. Could you help me,please?
A．OK.
（______）2. Thanks a lot.
B．You're welcome.
（______）3. Let's put the books in the box.
C．It's Monday.
（______）4. Can you carry it?
D．No,it's full.
（______）5. Who's on duty today?
E．lam.
（______）6. Is it empty?
F．No,it's light.
（______）7. What day is it today?
G．Certainly.
（______）8. Is that bag heavy? H. No. Li Lei isn't here.
（______）9. Are we all here today? I. No,thanks.
（______）10. Let me help you. J. Yes,I can.
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
